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Intel StrataFlash(R) Synchronous Memory (K3/K18)
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18 (x16)
Datasheet
m o .c U t4 e e h S ta a .D w w w

Product Features
Performance -- 110/115/120 ns Initial Access Speed for 64/128/256 Mbit Densities -- 25 ns Asynchronous Page-Mode Reads, 8 Words Wide -- 13 ns Synchronous Burst-Mode Reads, 8 or 16 Words Wide -- 32-Word Write Buffer -- Buffered Enhanced Factory Programming Software -- 25 s (typ.) Program and Erase Suspend Latency Time -- Flash Data Integrator (FDI), Common Flash Interface (CFI) Compatible -- Programmable WAIT Signal Polarity Quality and Reliability -- Operating Temperature: -40 C to +85 C -- 100K Minimum Erase Cycles per Block -- 0.18 m ETOXTM VII Process
Architecture -- Multi-Level Cell Technology: High Density at Low Cost -- Symmetrical 64 K-Word Blocks -- 256 Mbit (256 Blocks) -- 128 Mbit (128 Blocks) -- 64 Mbit (64 Blocks) -- Ideal for "CODE + DATA" applications Security -- 2-Kbit Protection Register -- Unique 64-bit Device Identifier -- Absolute Data Protection with VPEN and WP# -- Individual and Instantaneous Block Locking, Unlocking and Lock-Down Capability Packaging and Voltage -- 64-Ball Intel(R) Easy BGA Package (128-Mbit is also offered in a lead-free package) -- 56-and 79-Ball Intel(R) VF BGA Package -- VCC = 2.70 V to 3.60 V -- VCCQ = 1.65 to 1.95 V/2.375 to 3.60 V
The Intel StrataFlash(R) Synchronous Memory (K3/K18) product line adds a high performance burst-mode interface and other additional features to the Intel StrataFlash(R) memory family of products. Just like its J3 counterpart, the K3/K18 device utilizes reliable and proven two-bit-percell technology to deliver 2x the memory in 1x the space, offering high density flash at low cost. This is Intel's third generation MLC technology, manufactured on 0.18 m lithography, making it the most widely used and proven MLC product family on the market. K3/K18 is a 3-volt device (core), but it is available with 3-volt (K3) or 1.8-volt (K18) I/O voltages. These devices are ideal for mainstream applications requiring large storage space for both code and data storage. Advanced system designs will benefit from the high performance page and burst modes for direct execution from the flash memory. Available in densities from 64 Mbit to 256 Mbit (32 Mbyte), the K3/K18 device is the highest density NOR-based flash component available today, just as it was when Intel introduced the original device in 1997.
Notice: This document contains information on new products in production. The specifications are subject to change without notice. Verify with your local Intel sales office that you have the latest datasheet before finalizing a design.
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Order Number: 290737-009 February 2005
Information in this document is provided in connection with Intel(R) products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life saving, or life sustaining applications. Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. The 3 Volt Synchronous Intel StrataFlash(R) Memory may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request. Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling 1-800548-4725 or by visiting Intel's website at http://www.intel.com. Copyright (c) Intel Corporation, 2005. *Other names and brands may be claimed as the property of others.
2
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Contents
1.0 Introduction ..................................................................................................................7
1.1 1.2 Nomenclature ........................................................................................................7 Conventions ..........................................................................................................8 High Performance Page/Burst Modes...................................................................9 Single Chip Solution ..............................................................................................9 Packaging Options ..............................................................................................10 Product Highlights ...............................................................................................10 K3/K18 Block Diagram ........................................................................................11 Memory Map .......................................................................................................12 Easy BGA Package.............................................................................................13 VF BGA for 64 Mbit and 128 Mbit Package ........................................................14 VF BGA for 256 Mbit Package ............................................................................15 64-Ball Easy BGA Package for All Densities (1.0 mm Ball Pitch) .......................17 56-Ball VF BGA Package for 64- and 128-Mbit Density (0.75 mm Ball Pitch) ....18 79-Ball VF BGA for 256-Mbit Density Package...................................................19 Signal Descriptions..............................................................................................20 Absolute Maximum Ratings.................................................................................21 Operating Conditions...........................................................................................21
2.0
Functional Overview .................................................................................................9
2.1 2.2 2.3 2.4 2.5 2.6
3.0
Package Information...............................................................................................13
3.1 3.2 3.3
4.0
Ballout and Signal Description...........................................................................17
4.1 4.2 4.3 4.4
5.0
Maximum Ratings and Operating Conditions ..............................................21
5.1 5.2
6.0 7.0
Electrical Specifications........................................................................................22
6.1 7.1 7.2 7.3 7.4 7.5 DC Current Characteristics .................................................................................22 Read Operations .................................................................................................24 Write Operation ...................................................................................................29 Block Erase and Program Operation Performance .............................................31 AC Test Conditions .............................................................................................32 Capacitance ........................................................................................................32 Power-Up/Down Characteristics .........................................................................33 Power Supply Decoupling ...................................................................................33 Reset Characteristics ..........................................................................................33 Reset Operation ..................................................................................................34 Bus Operations Overview....................................................................................35 9.1.1 Read Mode .............................................................................................35 9.1.2 Write/Program ........................................................................................36
AC Characteristics...................................................................................................24
8.0
Power and Reset.......................................................................................................33
8.1 8.2 8.3 8.4
9.0
Bus Operations .........................................................................................................35
9.1
Datasheet
3
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
9.2
9.1.3 Output Disable ....................................................................................... 36 9.1.4 Standby .................................................................................................. 36 9.1.5 Reset ...................................................................................................... 36 Device Commands .............................................................................................. 37
10.0
Read Modes................................................................................................................ 39
10.1 10.2 10.3 Asynchronous Page-Mode Read ........................................................................ 39 Synchronous Burst-Mode Read .......................................................................... 40 Read Configuration Register ............................................................................... 40 10.3.1 Read Mode............................................................................................. 41 10.3.2 Latency Count ........................................................................................ 41 10.3.3 WAIT Polarity ......................................................................................... 43 10.3.4 Data Hold ............................................................................................... 43 10.3.5 WAIT Delay ............................................................................................ 44 10.3.6 Burst Sequence...................................................................................... 44 10.3.7 Clock Edge ............................................................................................. 44 10.3.8 Burst Length ........................................................................................... 44 Word Programming ............................................................................................. 45 Write-Buffer Programming .................................................................................. 45 Program Suspend ............................................................................................... 46 Program Resume ................................................................................................ 47 Buffered Enhanced Factory Programming (Buffered-EFP)................................. 47 11.5.1 Buffered-EFP Requirements and Considerations .................................. 47 11.5.2 Buffered-EFP Setup Phase .................................................................... 48 11.5.3 Buffered-EFP Program and Verify Phase .............................................. 48 11.5.4 Buffered-EFP Exit Phase ....................................................................... 49 Block Erase ......................................................................................................... 50 Erase Suspend.................................................................................................... 50 Erase Resume .................................................................................................... 51 Block Locking Operations ................................................................................... 52 13.1.1 Block Lock .............................................................................................. 53 13.1.2 Block Unlock .......................................................................................... 53 13.1.3 Block Lock-Down ................................................................................... 53 13.1.4 Block Lock During Erase Suspend......................................................... 53 13.1.5 WP# Lock-Down Control ........................................................................ 53 Protection Registers ............................................................................................ 54 13.2.1 Reading the Protection Registers .......................................................... 55 13.2.2 Programming the Protection Registers .................................................. 55 13.2.3 Locking the Protection Registers ........................................................... 55 Array Protection .................................................................................................. 55 Read Status Register .......................................................................................... 56 14.1.1 Clear Status Register ............................................................................. 57 Read Device Identifier ......................................................................................... 57
11.0
Program Modes......................................................................................................... 45
11.1 11.2 11.3 11.4 11.5
12.0
Erase Mode ................................................................................................................. 50
12.1 12.2 12.3
13.0
Security Modes ......................................................................................................... 52
13.1
13.2
13.3
14.0
Special Modes ........................................................................................................... 56
14.1 14.2
4
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
14.3 14.4
Read Query/CFI ..................................................................................................58 STS Configuration (Easy BGA package ONLY)..................................................58
Appendix A Appendix B Appendix C Appendix D Appendix E
Write State Machine (WSM).............................................................................. 59 Common Flash Interface ................................................................................... 64 Flowcharts............................................................................................................... 70 Additional Information ....................................................................................... 78 Ordering Information .......................................................................................... 79
Datasheet
5
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Revision History
Date of Revision 08/22/01 09/24/01 09/27/01 02/22/02 06/17/02 06/11/03 12/01/03 5/19/04 2/1/05 Revision -001 -002 -003 -004 -005 -006 -007 -008 -009 Original Version Corrected Typographical Errors in 11.0 AC Characteristics section. Change VFBGA Package from 64 to 56 ball package. Add ordering info in Appendix E. Changes to ballouts per engineering review and editing/formatting updates. Changes to Iccr, elimination of Speed Bin 2, expansion of Vccq range. Corrections to Ordering Information, typcs, added Next-State Table, Appendix A info. Added table of Latency Count settings to Section 4.3.2. Update PDF presentation. Reformatted the document layout. Added lead-free information. Description
6
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
1.0
Introduction
This document contains information pertaining to the Intel StrataFlash(R) Synchronous Memory (K3/K18) device. The purpose of this document is to describe the features, operations and specifications of these devices.
1.1
Nomenclature
3 Volt core: 3 Volt I/O: 1.8 Volt I/O: AMIN: AMAX: VCC range of 2.7 V - 3.6 V VCCQ range of 2.375 V - 3.6 V VCCQ range of 1.65 V - 1.95 V For Easy BGA packages: AMIN = A1 For VF BGA packages: AMIN = A0 For Easy BGA packages: 64 Mbit AMAX = A22 128 Mbit AMAX = A23 256 Mbit AMAX = A24 For VF BGA packages: 64 Mbit AMAX = A21 128 Mbit AMAX = A22 256 Mbit AMAX = A23 A group of flash cells that share common erase circuitry and erase simultaneously To write data to the flash array Refers to a signal or package connection name Refers to timing or voltage levels Command User Interface One Time Programmable Protection Register Protection Lock Register Reserved for Future Use Status Register Read Configuration Register Write State Machine Multi-Level Cell Indicates a logic one (1) Indicates a logic zero (0)
Block: Program: VPEN: VPEN: CUI: OTP: PR: PLR: RFU: SR: RCR: WSM: MLC: Set: Clear:
Datasheet
7
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
1.2
Conventions
0x: 0b: k (noun): M (noun): Byte: Word: Kword: Kb: KB: Mb: MB: Brackets: Hexadecimal prefix Binary prefix 1,000 1,000,000 8 bits 16 bits 1,024 words 1,024 bits 1,024 bytes 1,048,576 bits 1,048,576 bytes Square brackets ([]) will be used to designate group membership or to define a group of signals with similar function (i.e. A[21:1], SR[4,1] and D[15:0]).
8
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
2.0
Functional Overview
This section provides an overview of the K3/K18 device features and architecture. The K3/K18 device product line adds a high performance burst-mode interface and other additional features to the Intel StrataFlash(R) memory family of products. Just like its J3 counterpart, the K3/K18 utilizes reliable and proven two-bit-per-cell technology to deliver 2x the memory in 1x the space, offering high density flash at low cost. This is the third generation of Intel's multi-level cell (MLC) technology, manufactured on 0.18 m lithography, making it the most widely used and proven MLC product family on the market. K3/K18 is a 3-volt device (core), but it is available with 3-volt (K3) or 1.8-volt (K18) I/O voltages. These devices are ideal for mainstream applications requiring large storage space for both code and data storage. Advanced system designs will benefit from the high performance page and burst modes for direct execution from the flash memory. Available in densities from 64 Mb to 256 Mbit (32 Mbyte), the K3/K18 device is the highest density NOR-based flash component available today, just as it was when Intel introduced the original device in 1997.
2.1
High Performance Page/Burst Modes
NOR-based flash is generally preferred over other architectures for its reliability and fast read speeds. Fast reads allow the application to execute code directly out of flash, rather than downloading to RAM for execution, saving the costs of redundant system memory and board space. The K3/K18 device sets the standard for fast read speeds by adding burst mode and utilizing an 8 word page mode. Burst mode increases throughput up to 76MB/s, effectively five times faster than asynchronous reads on standard flash memory, and supports performance up to 66 Mhz with zero wait states. Both page and burst modes also provide a high performance glueless interface to the Intel(R) StrongARM* SA-1110 CPU (and future Intel(R) XScale processors) and many other microprocessors.
2.2
Single Chip Solution
In addition to code execution, many applications also have data storage needs. K3/K18 memory provides a single-chip solution for combined code execution and data storage. A single-chip solution is easy to implement by utilizing a unique hardware and software combination: the K3/ K18 device and Intel(R) Persistent Storage Manager (Intel(R) PSM). Intel(R) PSM is royalty free when used with Intel(R) Flash, is an installable file system and block device driver for Microsoft Windows* CE OS version 2.1 and later. The Intel(R) PSM software is appropriate for any application using the Microsoft Windows CE operating system, including PC Companions, Set-Top Boxes, and other connected appliances and hand-held devices. Other operating system ports are also available. Intel(R) PSM is optimized for the Intel StrataFlash(R) Memory product line. For wireless applications, Intel(R) Flash Data Integrator (Intel(R) FDI) Version 4 software provides the ability to manage data and files in Intel StrataFlash(R) Memory in an open architecture, including support for downloaded Java* applets, Bluetooth* file transfers, and voice recognition tags.
Datasheet
9
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
2.3
Packaging Options
The K3/K18 device is available in multiple packages: lead and lead-free Easy BGA and VF BGA, and Stacked Chip Scale Package (SCSP, stacking with SRAM or flash + flash). The 64-ball Easy BGA package provides SOP reliability and long-term footprint compatibility and cost in a chip scale package size. The VF BGA and SCSP offer small footprints for wireless applications. Manufactured on the Intel 0.18-micron process technology, Intel StrataFlash(R) Memory offers unprecedented value and performance and reliability.
2.4
Product Highlights
High performance read modes: 8 or 16-word synchronous burst, 8-word page:
* * * * * * * * * * *
64 Mb: 110/25/13 ns (async/page/burst) 128 Mb: 115/25/13 ns (Offered in both lead and lead-free Easy BGA packages) 256 Mb:120/25/13 ns 2.7 V to 3.6 V Vcc operation 64-ball Easy BGA VF BGA packages and Stacked Chip Scale Package (SCSP) I/O VCCQ: 2.375 V to 3.6 V (K3); 1.65 V to 1.95 V (K18) One-time-programmable protection registers (2Kbits) Program and Erase suspend capability Cost-effective multi-level cell architecture Royalty-free software support for most applications with Intel(R) PSM, Intel(R) FDI Version 4, or VFM
* Full extended operating temperature: -40 C to +85 C * Proven reliability: 100,000 cycles, up to 20 years data retention
10
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
2.5
K3/K18 Block Diagram
Figure 1. K3/K18 Device Memory Block Diagram
DQ0 - DQ15
VCCQ
VCCQ
Output Buffer
Input Buffer
Query Output Multiplexer Write Buffer Identifier Register Status Register Data Comparator Y-Decoder Y-Gating 64-Mbit: Sixty-four 128-Mbit: One-hundred twenty-eight 256-Mbit Two-hundred fifty-six 64Kword Blocks
Write State Machine
I/O Logic Data Register
VCCQ CE# WE# OE# RST#
WAIT
Command User Interface
Read State Machine
Input Multiplexer
AMAX : AMIN CLK ADV#
Input Buffer Address Latch Address Counter
Program/Erase Voltage Switch
STS VPEN VCC GND
X-Decoder
Datasheet
11
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
2.6
Memory Map
The K3/K18 device array is divided into symmetrical blocks that are 64-Kword in size. A 64 Mbit device contains 64 blocks, a 128 Mbit device contains 128 blocks and a 256 Mbit device contains 256 blocks. Flash cells within a block are organized by rows and columns. A block contains 512 rows by 128 words. The words on a row are divided into 16 eight-word groups. (See Figure 2.)
Figure 2. K3/K18 Device Memory Map
0xFFFFFF 0xFF0000 Block 255 . . . 0x7FFFFF Block 127 0x7F0000 256-Mbit Device . . . 128-Mbit Device 0x3FFFFF 0x3F0000 64-Mbit Device Block 63 . . . 0x3FFFF 0x2FFFF 0x1FFFF 0xFFFF 0
Block 3 Block 2 Block 1 Block 0
12
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
3.0
3.1
Package Information
Easy BGA Package
Figure 3. Easy BGA Package Drawing
Ball A1 Corner Ball A1 Corner S1
D
1 A B C D E E F G H
2
3
4
5
6
7
8 A B C D E F G
8
7
6
5
4
3
2
1
S2
b
e H
Top View - Ball side down
Bottom View - Ball Side Up
A1 A2
A
Seating Plane
Y
Note: Drawing not to scale
Table 1.
Easy BGA Package Dimensions (Sheet 1 of 2)
Millimeters
Symbol Min Nom Max 1.200 0.250 0.780 0.330 9.900 12.900 14.900 0.430 10.000 13.000 15.000 1.000 64 0.530 10.100 13.100 15.100 1 1 1 0.0130 0.3898 0.5079 0.5866 0.0098 0.0307 0.0169 0.3937 0.5118 0.5906 0.0394 64 0.0209 0.3976 0.5157 0.5945 Notes Min
Inches
Nom Max 0.0472
Package Height Ball Height Package Body Thickness Ball Width Package Body Width (64 Mb, 128 Mb, 256 Mb) Package Body Length (64 Mb, 128 Mb) Package Body Length (256 Mb) Pitch Ball Count
A A1 A2 b D E E [e] N
Datasheet
13
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 1.
Easy BGA Package Dimensions (Sheet 2 of 2)
Millimeters
Symbol Min Nom Max 0.100 1.400 2.900 3.900 1.500 3.000 4.000 1.600 3.100 4.100 1 1 1 0.0551 0.1142 0.1535 0.0591 0.1181 0.1575 Notes Min
Inches
Nom Max 0.0039 0.0630 0.1220 0.1614
Seating Plane Coplanarity Corner to Ball A1 Distance Along D (64/128/256 Mb) Corner to Ball A1 Distance Along E (64/128 Mb) Corner to Ball A1 Distance Along E (256 Mb)
Y S1 S2 S2
3.2
VF BGA for 64 Mbit and 128 Mbit Package
Figure 4. VF BGA for 64 Mb and 128 Mb Package Drawing
Ball A1 Corner Ball A1 Corner D S1
1 A B C E D E F G
2
3
4
5
6
7
8 A B C D E
8
7
6
5
4
3
2
1
S2
e F G b
Top View - Bump Side Down
A1 A2 A Seating Plane
Bottom View - Ball Side Up
Y
Note: Drawing not to scale
Table 2.
VF BGA Package (64 Mb and 128 Mb) Dimensions (Sheet 1 of 2)
Millimeters Symbol Min Nom Max 1.000 0.150 0.665 0.0059 0.0262 Notes Min Inches Nom Max 0.0394
Package Height Ball Height Package Body Thickness
A A1 A2
14
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 2.
VF BGA Package (64 Mb and 128 Mb) Dimensions (Sheet 2 of 2)
Millimeters Symbol Min 0.325 7.600 10.900 8.900 Nom 0.375 7.700 11.000 9.000 0.750 56 0.100 1.125 2.775 2.150 1.225 2.875 2.250 1.325 2.975 2.350 1 1 1 0.0443 0.1093 0.0846 0.0482 0.1132 0.0886 Max 0.425 7.800 11.100 9.100 1 1 1 Notes Min 0.0128 0.2992 0.4291 0.3504 Inches Nom 0.0148 0.3031 0.4331 0.3543 0.0295 56 0.0039 0.0522 0.1171 0.0925 Max 0.0167 0.3071 0.4370 0.3583
Ball (Lead) Width Package Body Width (64 Mb) Package Body Width (128 Mb) Package Body Length (64 Mb, 128 Mb) Pitch Ball (Lead) Count Seating Plane Coplanarity Corner to Ball A1 Distance Along D (64 Mb) Corner to Ball A1 Distance Along E (128 Mb) Corner to Ball A1 Distance Along E (64 Mb, 128 Mb)
b D D E [e] N Y S1 S1 S2
3.3
VF BGA for 256 Mbit Package
Figure 5. VF BGA Package 256 Mb Drawing
Pin # 1 Indicator
D
S1
Pin # 1 Corner
1 A B
2
3
4
5
6
7
8
9 10 11 12 13 A B C D E F G
13 12 11 10 9
8
7
6
5
4
3
21
S2
E
C D E F G
e b
Top View - Bump side down
Bottom View - Bump side up
A2
A1 A
Side View Note: Drawing not to scale Seating Plan
Y
Datasheet
15
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 3.
VF BGA (256 Mb) Dimensions
Millimeters Symbol Min Nom Max 1.000 0.150 0.665 0.325 14.400 8.900 0.375 14.500 9.000 0.750 79 0.100 2.650 2.150 2.750 2.250 2.850 2.350 1 1 0.1043 0.0846 0.1083 0.0886 0.425 14.600 9.100 1 1 0.0128 0.5669 0.3504 0.0059 0.0262 0.0148 0.5709 0.3543 0.0295 79 0.0039 0.1122 0.0925 0.0167 0.5748 0.3583 Notes Min Inches Nom Max 0.0394
Package Height Ball Height Package Body Thickness Ball (Lead) Width Package Body Width Package Body Length Pitch Ball (Lead) Count Seating Plane Coplanarity Corner to Ball A1 Distance Along D Corner to Ball A1 Distance Along E
A A1 A2 b D E [e] N Y S1 S2
16
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
4.0
Ballout and Signal Description
The K3/K18 device is available in a 64-ball Easy BGA package for the 64-, 128-, and 256 Mbit densities. See Figure 6. This device is also available in a 56-ball VF BGA package for the 64- and 128-Mbit densities and a 79-ball VF BGA package for the 256-Mbit density. See Figure 7 on page 18 and Figure 8 on page 19.
4.1
64-Ball Easy BGA Package for All Densities (1.0 mm Ball Pitch)
Figure 6. 64-Ball Easy BGA Package for All Available Densities (1.0 mm Ball Pitch)
1 A A1 B A2 C A3 D A4 E D8 F RFU G
2
3
4
5
6
7
8
8
7
6
5
4
3
2
1 A
A6
A8 VPEN A13 Vcc A18 A22
A22 A18 Vcc
A13 VPEN A8
A6
A1 B
Vss A7
A9 CE# A14 RFU A19 RFU A12 A15 WP# A20 A21
RFU A19 RFU A14 CE# A9 A21 A20 WP# A15 A12 A10
Vss A7
A2 C A3 D
A10
A5 A11 RST# Vccq Vccq A16 A17
A17 A16 Vccq Vccq RST# A11 A5
A4 E
D1
D9
D3
D4
CLK D15 STS
STS
D15 CLK
D4
D3
D9
D1
D8 F
D0
D10 D11 D12 ADV# WAIT OE#
OE# WAIT ADV# D12 D11 D10
D0 RFU G
A23 RFU 128M H
D2 Vccq
D5
D6
D14 WE#
WE#
D14
D6
D5 Vccq D2
RFU A23 128M H
RFU Vssq Vcc Vss D13 Vssq D7 Top View - Ball Side Down Version -Easy BGA
A24 256M
A24 256M
D7
Vssq D13 Vss Vcc Vssq RFU Bottom View - Ball SideUp Version - Easy BGA
NOTES: 1. Address A23 is valid only on 128-Mbit densities and above; otherwise, it is a no connect (NC). 2. Address A24 is valid only on 256-Mbit density; otherwise, it is a no connect (NC).
Datasheet
17
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
4.2
56-Ball VF BGA Package for 64- and 128-Mbit Density (0.75 mm Ball Pitch)
Figure 7. 56-Ball VF BGA Package 0.75 mm Ball Pitch (for 64- and 128-Mb Densities ONLY)
1 A A11 B A12 C A13 D A15 E VCCQ F VSS G D7
2
3
4
5
6
7
8
8
7
6
5
4
3
2
1 A
A8
VSS
VCC
VPEN
A18
A6
A4
A4
A6
A18
VPEN
VCC
VSS
A8
A11 B
A9
A20
CLK
RST#
A17
A5
A3
A3
A5
A17
RST#
CLK
A20
A9
A12 C
A10
A21
ADV#
WE#
A19
A7
A2
A2
A7
A19
WE#
ADV#
A21
A10
A13 D
A14
WAIT
A16
D12
WP#
A22
A1
A1
A22
WP#
D12
A16
WAIT
A14
A15 E
D15
D6
D4
D2
D1
CE#
A0
A0
CE#
D1
D2
D4
D6
D15
VCCQ F
D14
D13
D11
D10
D9
D0
OE#
OE#
D0
D9
D10
D11
D13
D14
VSS G
VSSQ
D5
VCC
D3
VCCQ
D8
VSSQ
VSSQ
D8
VCCQ
D3
VCC
D5
VSSQ
D7
VFBGA 7x8 Top View - Ball Side Down
VFBGA 7x8 Bottom View - Ball Side Up
NOTE: Address A22 is only valid on 128-Mbit density; otherwise, it is a no connect (NC).
18
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
4.3
79-Ball VF BGA for 256-Mbit Density Package
Figure 8. 79-Ball VF BGA Package for 256-Mbit Density
1 2 3 4 5 6 7 8 9 10 11 12 13
A DU B DU C A13 D A15 E VCCQ F DU G DU DU D7 VSSQ D5 VCC D3 VCCQ D8 VSSQ RFU DU DU DU VSS D14 D13 D11 D10 D9 D0 OE# RFU DU DU D15 D6 D4 D2 D1 CE# A0 A23 A14 WAIT A16 D12 WP# A22 A1 RFU A10 A21 ADV# WE# A19 A7 A2 RFU DU A12 A9 A20 CLK RST# A17 A5 A3 RFU DU DU DU A11 A8 VSS VCC VPEN A18 A6 A4 RFU DU DU
VFBGA Top View - Ball Side Down
13
12
11
10
9
8
7
6
5
4
3
2
1
A DU DU RFU A4 A6 A18 VPEN VCC VSS A8 A11 DU DU B DU DU RFU A3 A5 A17 RST# CLK A20 A9 A12 DU DU C RFU A2 A7 A19 WE# ADV# A21 A10 A13 D RFU A1 A22 WP# D12 A16 WAIT A14 A15 E A23 A0 CE# D1 D2 D4 D6 D15 VCCQ F DU DU RFU OE# D0 D9 D10 D11 D13 D14 VSS DU DU G DU DU RFU VSSQ D8 VCCQ D3 VCC D5 VSSQ D7 DU DU
VFBGA Bottom View - Ball Side Up
Datasheet
19
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
4.4
Signal Descriptions
Table 4 describes the active signals used.
Table 4.
Sym A[AMAX:AMIN] D[15:0] CE# OE# WE# RST#
Signal Descriptions
Type Input Input/ Output Input Input Input Input Name and Function ADDRESS: Device address. Address internally latched during read/write operations. See nomenclature Section 1.2 for AMAX and AMIN values. DATA I/O: Inputs data and commands during write operations, outputs data during read operations. Float when CE# or OE# are de-asserted. Data is internally latched during write operations. CHIP ENABLE: Active-low; CE#-low selects the device. CE#-high deselects the device, places it in standby mode, and places data and WAIT outputs in a High-Z state. OUTPUT ENABLE: Active-low; OE#-low enables the device's output data drivers during read cycles. OE#-high places the data outputs in a High-Z state. WRITE ENABLE: Active-low; WE# controls writes to the flash device. Address and data are latched on the rising edge of WE#. RESET: Active-low; resets internal circuitry and inhibits write operations. This provides data protection during power transitions. RST#-high enables normal operation. Exit from reset places the device in asynchronous read-array mode. WRITE PROTECT: Active-low; WP#-low enables the lock-down mechanism. Blocks locked down cannot be unlocked with the unlock command. WP#-high overrides the lock-down function enabling blocks to be erased or programmed through software. ADDRESS VALID: Active-low; during synchronous read operations, addresses are latched on the rising edge of ADV# or on the rising (or falling) edge of CLK, whichever occurs first. ERASE/PROGRAM/BLOCK LOCK ENABLE: Controls device protection. When VPEN VPENLK, flash contents are protected against Program and Erase. CLOCK: Synchronizes the device to the system's bus frequency in synchronous-read mode, and increments the internal address generator. During synchronous read operations, addresses are latched on ADV#'s rising edge or CLK's rising (or falling) edge, whichever occurs first. Connect this signal to VCC if the device will not be used in synchronous-read mode. STATUS: Indicates the status of the internal state machine. When configured in level mode (default mode), it acts as a RY/BY# pin. When configured in one of its pulse modes, it can indicate program and/or erase completion. For alternate configurations of the STATUS pin, see the configuration commands. STS is to be tied to VCCQ with a pull-up resistor. WAIT: Indicates invalid data in synchronous-read (burst) modes. WAIT is High-Z whenever CE# is de-asserted. WAIT is not gated by OE#. CORE POWER SUPPLY: Core (logic) source voltage. Writes to the flash array are inhibited when VCC VLKO. Device operation at invalid VCC voltages should not be attempted. I/O POWER SUPPLY: I/O Output-driver source voltage. GROUND: Ground reference for device core power supply. Connect to system ground. I/O GROUND: I/O Ground reference for device I/O power supply. Connect to system ground. DO NOT USE: Do not use this ball. This ball should not be connected to any power supplies, signals or other balls and must be left floating. NO CONNECT: No internal connection; can be driven or floated. RESERVED for FUTURE USE: Balls designated as RFU are reserved by Intel for future device functionality and enhancement.
WP# ADV# VPEN
Input Input Input
CLK
Input
STS
Open Drain Output Output Power Power Power Power -- -- --
WAIT VCC VCCQ VSS VSSQ DU NC RFU
20
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
5.0
5.1
Maximum Ratings and Operating Conditions
Absolute Maximum Ratings
The absolute maximum ratings are shown in Table 5.
Warning:
Stressing the device beyond the "Absolute Maximum Ratings" may cause permanent damage. These are stress ratings only. Operation beyond the "Operating Conditions" is not recommended and extended exposure beyond the "Operating Conditions" may affect device reliability. Absolute Maximum Ratings
Parameter Temperature under bias Storage temperature Voltage on any signal (except VCC and VCCQ) VCC1 (K3) voltage VCC2 (K18) voltage VCCQ1 (K3) voltage VCCQ2 (K18) voltage Output short circuit current Maximum Rating -40 C to +85 C -65 C to +125 C -0.5 V to VCCQ +0.5 V -0.2 V to +4.1 V -0.2 V to +3.8 V -0.2 V to +4.1 V -0.2 V to +2.45 V 100 mA 1 1 3 1,2 1 Notes
Table 5.
NOTES: 1. Specified voltages are with respect to VSS. Minimum DC voltage is -0.5 V on input/output signals and -0.2 V on VCC and VCCQ. During transitions, this level may undershoot to -2.0 V for periods <20 ns. Maximum DC voltage on VCC is VCC +0.5 V, which, during transitions, may overshoot to VCC +2.0 V for periods <20 ns. Maximum DC voltage on input/output signals and VCCQ is VCCQ +0.5 V, which, during transitions, may overshoot to VCCQ +2.0 V for periods <20 ns. 2. Program/erase voltage is normally 2.7 V-3.6 V. 3. Output shorted for no more than one second. No more than one output shorted at a time.
5.2
Operating Conditions
Symbol TA VCC1 VCC2 VCCQ1 VCCQ2 Block Erase Cycles Parameter Operating Temperature Core Voltage (K3) Core Voltage (K18) Vccq I/O Supply voltage (K3) Vccq I/O Supply voltage (K18) All Blocks, VCC = 3 V Min -40 2.70 2.70 2.375 1.65 100,000 Max +85 3.60 3.30 3.60 1.95 Units C V V V V Cycles
Datasheet
21
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
6.0
6.1
Table 6.
Electrical Specifications
DC Current Characteristics
DC Current Characteristics
VCC VCCQ Sym ILI Parameter Input Load Current Notes 1 2.7 V - 3.3 V 1.65 V- 1.95 V Typ Max 1 2.7 V - 3.6 V 2.375 V - 3.6 V Typ Max 1 Unit A Test Condition VCC = VCCMAX, VCCQ = VCCQMAX, VIN = VCCQ or GND VCC = VCCMAX, VCCQ = VCCQMAX, VIN = VCCQ or GND CMOS Inputs, VCC = VCCMAX, VCCQ = VCCQMAX, Device is Disabled RST# = VCCQ0.2V/GND0.2V VCC = VCCMAX, tACC = tAVQV 8 Word Read Burst length = 8 Burst length = 16 tACC = tAVQV, tAPA = 25 ns, VCC = VCCMAX f = 66 MHz(K3), 50 MHz(K18) VCC = VCCMAX CE# = VIL, OE# = VIH, Inputs = VIH or VIL
ILO
Output Leakage Current 64 Mbit, 128 Mbit 256 Mbit Single Word Read Asynchronous Page Mode
1
10
10
A
30 1, 2, 3, 4 45 10
55 80 73
30 45 10
55 80 78
A A mA
ICCS
VCC Standby
16 1, 3, 4, 5
28
18
30
mA
ICCR
Average VCC Read Current Synchronous Burst
24
38
32
46
mA
28 1, 4, 6, 7 1, 4, 6, 7 1, 4, 6, 7
40
36
48
mA
ICCW ICCE ICCWS, ICCES
VCC Program Current VCC Block Erase Current VCC Program Suspend or Block Erase Suspend Current
50 50
80 80
40 40
70 70
mA mA
CMOS Inputs, VPEN = VCC CMOS Inputs, VPEN = VCC Device is enabled
20
10
mA
NOTES: 1. All currents are RMS unless noted. Typical values at VCC = 3 V, TA = +25C, best-case address pattern. Maximum values at VCC = 3.6 V, worst-case address pattern. 2. Includes STS. 3. CMOS inputs/outputs are either VCC 0.2 V or VSS 0.2 V. 4. Current values are specified over a specific temperature range (-40C to +85C). 5. Sampled, not 100% tested. 6. ICCES, ICCWS are specified with device deselected. If device is read while in erase suspend/program suspend, current is ICCES plus ICCR or ICCWS plus ICCR. 7. VPEN < VPENLK inhibits block erase, program and lock-bit operations. Don't use VPEN outside its valid ranges.
22
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 7.
DC Voltage Characteristics
VCC VCCQ Sym VIL VIH Parameter(1) Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage CMOS CMOS Note 7 7 2.7 V - 3.3 V 1.65 V - 1.95 V Min 0 VCCQ -0.4 Max 0.4 VCCQ 2.7 V - 3.6 V 2.375 V - 3.6 V Min 0 2.3 Max 0.4 VCCQ Unit V V VCC = VCCMIN, VCCQ = VCCQMIN, IOH = 100 A VCC = VCCMIN, VCCQ = VCCQMIN, IOH = -100 A Test Condition
VOL
CMOS
2, 4
0.2
0.2
V
VOH VPENLK VPENH VLKO VCCQLKO
CMOS
2, 4
VCCQ -0.2 1.0 1.65 1.8 1.0 1.95
VCCQ -0.2 1.0 2.7 1.8 1.0 3.6
V
VPEN Lock-Out during normal operations VPEN during Block Erase, Program or LockBit operations VCC Lockout Voltage VCCQ Lockout Voltage
3, 5 3, 5 3, 6 3
V V V V
NOTES: 1. All currents are RMS unless noted. Typical values at typical VCC, TA = +25C. 2. Includes STS. 3. Sampled, not 100% tested. 4. ICCES, ICCWS are specified with device deselected. If device is read while in erase suspend/program suspend, current is ICCES plus ICCR or ICCWS plus ICCR. 5. VPEN < VPENLK inhibits block erase, program and lock-bit operations. Don't use VPEN outside its valid ranges. 6. Block erases, programming and lock-bit configurations are inhibited when VCCDatasheet
23
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
7.0
7.1
Table 8.
AC Characteristics
Read Operations
AC Read Characteristics (Sheet 1 of 2)
VCC VCCQ Num Sym Parameter(3) Density Note 2.7 V - 3.3 V 1.65 V - 1.95V Min Max 2.7 V - 3.6 V 2.375 V - 3.6 V Min Max Unit
Asynchronous Specifications 64 Mbit R1 tAVAV Read cycle time 128 Mbit 256 Mbit 64 Mbit R2 tAVQV Address to output delay 128 Mbit 256 Mbit 64 Mbit R3 tELQV CE# low to output delay 128 Mbit 256 Mbit R4 tGLQV OE# low to output delay 64 Mbit R5 tPHQV RST# high to output delay 128 Mbit 256 Mbit R6 R7 R8 R9 R10 R11 R12 R13 tELQX tGLQX tEHQZ tGHQZ tOH tEHEL tELTL/H tEHTZ CE# low to output in Low-Z OE# low to output in Low-Z CE# high to output in High-Z OE# high to output in High-Z Output hold from first occurring address, CE# or OE# change CE# high to CE# low CE# low to WAIT low CE# high to WAIT High-Z 3 5 5 5 1 0 0 30 30 0 0 25 25 0 0 25 25 3 3 6 110 115 120 110 115 120 110 115 120 30 190 220 220 0 0 25 25 110 115 120 110 115 120 110 115 120 25 180 210 210 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
Latching Specifications R101 R102 tAVVH tELVH Address setup to ADV# high CE# low to ADV# high 64 Mbit R103 tVLQV ADV# low to output delay 128 Mbit 256 Mbit 9 9 110 115 120 7 7 110 115 120 ns ns ns ns ns
24
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 8.
AC Read Characteristics (Sheet 2 of 2)
VCC VCCQ Num R104 R105 R106 R108 Sym tVLVH tVHVL tVHAX tAPA Parameter(3) ADV# pulse width low ADV# pulse width high Address hold from ADV# high Page address access 4 6 Density Note 2.7 V - 3.3 V 1.65 V - 1.95V Min 12 12 10 30 Max 2.7 V - 3.6 V 2.375 V - 3.6 V Min 10 10 8 25 Max Unit ns ns ns ns
Clock Specifications R200 R201 R202 R203 fCLK tCLK tCH/L tCHCL CLK frequency CLK period CLK high/low time CLK fall/rise time 7 7 7 20 7 3 50 15 4.5 3 66 MHz ns ns ns
Synchronous Specifications R301 R302 R303 R304 R305 R306 R307 R312 tAVCH tVLCH tELCH tCHQV tCHQX tCHAX tCHTL/H tCHVL Address valid setup to CLK ADV# low setup to CLK CE# low setup to CLK CLK to output delay Output hold from CLK Address hold from CLK CLK to WAIT delay CLK to ADV# low 4 7, 8 3 7 3 10 15 3 9 9 9 15 3 8 13 7 7 7 13 ns ns ns ns ns ns ns ns
NOTES: 1. CE# high between synchronous reads = 15 ns. Data bus read voltage is VCCQ1. 2. See Figure 17, "AC Input/Output Reference Waveform" on page 32 for timing measurements and maximum allowable input slew rate. 3. OE# may be delayed up to tELQV-tGLQV after CE# low without impact on tELQV. 4. Address hold in synchronous burst-mode is tCHAX or tVHAX, whichever timing specification is satisfied first. 5. Sampled, not 100% tested. 6. For devices configured to standard word read mode, R108(tAPA) will equal R2(tAVQV). 7. The clock duty cycle should be 50% (approx.). 8. Applies only to subsequent synchronous reads.
Datasheet
25
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 9. Single Word Asynchronous Read Waveform
R1 R2 Address [A] ADV# R3 CE# [E} R4 OE# [G] R13 WAIT [T] R7 R6 Data [D /Q] R5 RST# [P] R10 R9 R8
Figure 10. Page Mode Read Waveform
R2 A[Max:3] [A]
A[2:0] R105 ADV# [V] R3 CE# [E] R4 OE# [G] R13 WAIT [T] R7 R6 Data [D/Q] Q0 R108 Q1 Q6 R108 Q7 R9 R8
26
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 11. Single Word Burst Read Waveform
Latency Count R301 R306 CLK [C] R2 Address [A] R101 R105 R104 ADV# [V] R303 R102 R3 CE# [E] R7 O [G E# ] R12 WAIT [T] R4 R304 Data [D/Q]
NOTE: WAIT (shown active low) can be configured to assert either during, or one clock before, valid data.
R106
R8
R9
R307
R13
R305
Datasheet
27
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 12. 8 Word Synchronous Burst Read Waveform
Latency Co R304 R305 CLK R2 Address [A] R106 R101 R105 ADV# R3 CE# [E] R4 OE# [G] R13 R12 WAIT [T] R7 R6 DATA [D/Q] Q0 R304 Q1 Q6 R304 Q7 R9 R8 Note 1 R1 R305 R305
NOTES: 1. Section 4.9.13, "First Access Latency Count (CR.11-13)" on page 38 describes how to insert clock cycles during the initial access. 2. WAIT (shown active high) can be configured to assert either during or one clock before valid data.
Figure 13. Clock Input AC Waveform
R201
CLK [C]
VIH VIL R202 R203
CLKINPUT.WMF
28
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
7.2
Table 9.
Write Operation
Write Characteristics
VCC VCCQ Num Sym Parameter (1) Density Notes 2.7 - 3.3 V 1.65 - 1.95 V Min 2.7 - 3.6 V 2.375 - 3.6 V Min Unit
ns ns ns
64 Mbit W1 tPHWL RST# high recovery to WE# low CE# setup to WE# low WE# write pulse width low Data setup to WE# high Address setup to WE# high CE# hold from WE# high Data hold from WE# high Address hold from WE# high WE# pulse width high VPEN Setup to WE# (CE#) Going High VPEN Hold from Valid SRD, STS Going High WP# hold from Status read WP# setup to WE# high Write recovery before read WE# high to data valid 2 3, 7 2, 3, 6 2 4, 5 3 128 Mbit 256 Mbit W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W12 W13 W14 W16 tELWL tWLWH tDVWH tAVWH tWHEH tWHDX tWHAX tWHWL tVPWH (tVPEH) tQVVL tQVBL tBHWH tWHGL tWHQV 2
190 220 220 0 60 60 55 0 0 0 35 0 0 0 200 35 tAVQV +40
180 210 210 0 60 60 55 0 0 0 30 0 0 0 200 35 tAVQV +40
ns ns ns ns ns ns ns ns ns
ns ns ns ns
NOTES: 1. Read timing characteristics during block erase, program and lock-bit operations are the same as during read-only operations. Refer to AC Characteristics - Read-Only Operations. 2. A write operation can be initiated or terminated with either CE# or WE#. 3. Sampled, not 100% tested. 4. Write pulse width low (tWLWH) is defined from CE# or WE# going low (whichever goes low last) to CE# or WE# going high (whichever goes high first). Hence, tWLWH = tELEH = tWLEH = tELWH. 5. Write pulse width high (tWHWL) is defined from CE# or WE# going high (whichever goes high first) to CE# or WE# going low (whichever goes low last). Hence, tWHWL = tEHEL = tWHEL = tEHWL. 6. For array access, tAVQV is required in addition to tWHGL for any accesses after a write. 7. STS timings are based on STS configured in its RY/BY# default mode.
Datasheet
29
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 14. Write to Write Waveform
W5 Address [A] W2 CE# [E} W3 WE# [W] OE# [G] W7 W4 Data [D/Q] W1 RST#/ RP# [P] W4 W7 W9 W3 W6 W2 W6 W8 W5 W8
Figure 15. Asynchronous Read to Write Waveform
R1 R2 Address [A] R3 CE# [E} R4 OE# [G] W3 W2 WE# [W] R7 R6 Data [D/Q] R5 RST# [P] Q W7 R10 W4 D W6 R9 R8 W5 W8
30
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 16. Asynchronous Write to Read Waveform
W5 Address [A] W2 CE# [E} W3 WE# [W]
W8
R1
W6
R10
W18
W14 OE# [G] R4 R2 R3 Q
W7 W4 Data [D/Q] W1 RST # [P] D
R9 R8
7.3
Block Erase and Program Operation Performance
Table 10. Block Erase and Program Operation Performance
# Sym
tWHQV1, tEHQV1 tWHQV2, tEHQV2 tWHQV3, tEHQV3 tBBWB W0 tBWB tBEFP-SETUP tWHQV4, tEHQV4 tWHRH1, tEHRH1 tWHRH, tEHRH WY tSTS
Parameter
Write Buffer Program Time (Time to program 64 bytes/32 words) Word Program Time (Using Word Program Command) Block Program Time (Using Write-to- Buffer Command) Buffered-EFP Buffer Write Time Buffered-EFP Block Write Time Buffered-EFP Set-up Time Block Erase Time Program Suspend Latency Time to Read Erase Suspend Latency Time to Read STS Pulse Width Low Time
Notes
4, 5, 6 4 4 1, 3, 4 1, 3, 4 1, 3, 4 4
Min
Typ
320 150 0.7 288 0.58 N/A 1.0 20 20
Max
960 450 2.1 864 1.7 5.0 4.0 25 25
Unit
s s sec s sec s sec s s ns
4
250
NOTES:
2. 3. 4. 5. 6. 1. Typical values measured at TA= +25C and nominal voltages. Assumes corresponding lock-bits are not set. Subject to change based on device characterization. These performance numbers are valid for all speed versions. Sampled but not 100% tested. Excludes system level overhead. These values are valid when the buffer is full, and the start address is aligned on 32-bit boundary. Effective word program time (tWHQV1, tEHQV1) is 10.0 s/word (typ).
Datasheet
31
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
7.4
AC Test Conditions
Figure 17. AC Input/Output Reference Waveform
VCCQ
Input VCCQ/2
0V
Test Points
VCCQ/2 Output
IO_REF.WMF
NOTE: AC test inputs are driven at VCCQ for Logic "1" and 0.0 V for Logic "0." Input/output timing begins or ends at VCCQ/2. Input rise and fall times (10% to 90%) < 5 ns. Worst case speed occurs at VCC = VCCMIN.
Figure 18. Transient Equivalent Testing Load Circuit
VCCQ R1 Device Under Test CL R2 Out
LOAD_CKT.WMF
NOTE: CL included jig capacitance.
Table 11. Test Configuration Component Value for Worst Case Speed Conditions
Test Configuration CL (pF) R1 R2
VCCQMIN Standard Test
NOTE: CL includes jig capacitance.
30
25K
25K
7.5
Capacitance
Parameter(1)
Table 12. Capacitance
Sym Typ Max Unit Condition
CIN COUT
Input Capacitance Output Capacitance
6 8
8 12
pF pF
VIN = 0.0 V VOUT = 0.0 V
NOTES: 1. TA = +25C, f = 1 MHz. 2. Sampled, not 100% tested.
32
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
8.0
Power and Reset
This section provides an overview of some system level considerations in regards to the flash device. This section provides a brief description of power-up, power-down, decoupling and reset design considerations.
8.1
Power-Up/Down Characteristics
In order to prevent any condition that may result in a spurious write or erase operation, it is recommended to power-up and power-down VCC and VCCQ together. It is also recommended to power-up VPEN with or slightly after VCC. Conversely, VPEN must power down with or slightly before VCC.
8.2
Power Supply Decoupling
When the device is enabled, many internal conditions change. Circuits are energized, charge pumps are switched on, and internal voltage nodes are ramped. All of this internal activities produce transient signals. The magnitude of the transient signals depends on the device and system loading. To minimize the effect of these transient signals, a 0.1 F ceramic capacitor is required across each VCC/VSS and VCCQ/VSSQ signal. Capacitors should be placed as close as possible to device connections. Additionally, for every eight flash devices, a 4.7 F electrolytic capacitor should be placed between VCC and VSS at the power supply connection. This 4.7 F capacitor should help overcome voltage slumps caused by PCB (print circuit board) trace inductance.
8.3
Reset Characteristics
By holding the flash device in reset during power-up and power-down transitions, invalid bus conditions may be masked. The flash device enters reset mode when RST# is driven low. In reset, internal flash circuitry is disabled and outputs are placed in a high-impedance state. After return from reset, a certain amount of time is required before the flash device is able to perform normal operations. After return from reset, the flash device defaults to asynchronous page mode. If RST# is driven low during a program or erase operation, the program or erase operation will be aborted and the memory contents at the aborted block or address are no longer valid. See Figure 19, "Reset Operation Waveforms" on page 34 for detailed information regarding reset timings.
Datasheet
33
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
8.4
Reset Operation
Figure 19. Reset Operation Waveforms
P1 R5
(A) Reset during read mode
RST# [P]
VIH VIL
P2
(B) Reset during program or block erase P1 P2
Abort Complete
R5
RST# [P]
VIH VIL
P2
(C) Reset during program or block erase P1 P2
Abort Complete
R5
RST# [P]
VIH VIL
P3
(D) VCC Power-up to RST# high
VCC
VCC 0V RESET.WMF
Table 13. Reset Specifications
Num Symbol Parameter Notes Min Max Unit
P1 P2 P3
tPLPH tPLRH tVCCPH
RST# pulse width low RST# low to device reset during erase RST# low to device reset during program VCC Power Valid to RST# de-assertion (high)
1,2,3,4 1,3,4,7 1,3,4,7 1,4,5,6
100 20 10 60
ns
s
NOTES: 1. These specifications are valid for all product versions (packages and speeds). 2. The device may reset if tPLPH is 34
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
9.0
Bus Operations
This section provides an overview of device bus operations. The on-chip Write State Machine (WSM) manages all block-erase and word-program algorithms. The system CPU provides control of all in-system read, write, and erase operations of the device via the system bus. Device commands are written to the Command User Interface (CUI) to control all of the flash memory device's operations. The CUI does not occupy an addressable memory location; it is the mechanism through which the flash device is controlled.
9.1
Bus Operations Overview
Bus cycles to and from the device conform to standard microprocessor bus operations. Table 14 summarizes the bus operations and the voltage levels that must be applied to the device control signals when operating within each device mode. Whenever CE# is asserted, the device is in an active state; it is selected and its internal circuits are active. OE# and WE# determine whether D[15:0] are outputs or inputs, respectively.
Table 14. Bus Operations
Mode RST# CE# OE#(1) WE#(1) ADV# WAIT VPEN Data STS (default mode) Notes
Synch Array Read Asynch. Reads and Synch. Status, Query and Identifier Reads Output Disable Standby Reset CUI Command Write Array Writes
VIH VIH VIH VIH VIL VIH VIH
Enabled
VIL VIL VIH X X VIH VIH
VIH VIH VIH X X VIL VIL
X
Valid
X
DOUT DOUT High-Z High-Z High-Z DIN DIN
High-Z
Enabled
X
Driven
X
High-Z
2
Enabled Disabled X Enabled Enabled
X X X X X
Driven High-Z High-Z Driven Driven
X X X X VPENH
High-Z High-Z High-Z High-Z VIL 3, 4
NOTES: 1. OE# and WE# should never be asserted simultaneously, but if done, OE# overrides WE#. 2. Refer to DC Characteristics. When VPEN VPENLK, memory contents can be read but not altered. 3. X should be VIL or VIH for the control pins and VPENLK or VPENH for VPEN. For outputs, X should be VOL or VOH. 4. Array writes are either program or erase operations.
9.1.1
Read Mode
To perform a bus read operation, CE# and OE# must be asserted. CE# is the device-select control; when active, it enables the flash memory device. OE# is the data-output control; when active, the addressed flash memory data is driven onto the I/O bus. For all read states, WE# and RST# must be de-asserted. See Section 7.1, "Read Operations" on page 24. Refer to Section 10.0, "Read Modes" on page 39 for details on reading from the flash array, and refer to Section 14.0, "Special Modes" on page 56 for details regarding all other available read states.
Datasheet
35
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
9.1.2
Write/Program
To perform a bus write operation, both CE# and WE# are asserted, and OE# is de-asserted. All device write operations are asynchronous, with CLK being ignored. During a write operation, address and data are latched on the rising edge of WE# or CE#, whichever occurs first. See Table 15, "Command Bus Definitions" on page 37 for bus cycle commands. See Section 7.2, "Write Operation" on page 29. Write operations with invalid VCC and/or VPEN voltages can produce spurious results and should not be attempted.
9.1.3
Output Disable
When OE# is de-asserted, device outputs, D[15:0], are disabled and placed in a high-impedance state.
9.1.4
Standby
When CE# is de-asserted, the device is deselected and placed in standby, substantially reducing power consumption. In standby, the data outputs are placed in a high-impedance state independent of the level placed on OE#. If the device is de-selected (CE# de-asserted) during a program or erase operation, it will continue to consume active power until the program or erase operation is completed. There is no additional latency for subsequent read operations.
9.1.5
Reset
After initial power-up or reset, the device defaults to Read Array mode and the device status register is set to 0x80. If already in Read Array mode, asserting RST# de-energizes all internal circuits, and places the output drivers in a high-impedance state. After returning from reset (RST# de-asserted) a minimum amount of time is required before the initial read access outputs valid data. Also, a minimum delay is required after a reset before a write cycle can be initiated. After this wake-up interval has passed, normal operation is restored. See Section 7.1, "Read Operations" on page 24 for reset timing details. Note: If RST# is asserted during a program or erase operation, the operation will be aborted and the memory contents at the aborted location (for a program) or block (for an erase) are no longer valid, since the data may have been only partially written or erased. When RST# is asserted, the device shuts down the operation in progress, a process which takes a minimum amount of time to complete. When RST# has been de-asserted, the device will be reset to read array mode. If the system is returning from an aborted program or erase operation, a minimum amount of time must be satisfied before a read or write operation is initiated. As with any automated device, it is important to assert RST# when the system is reset. When the system comes out of reset, the system processor will attempt to read from the flash memory if it is the system boot device. Automated flash memories provide status information when read during program or block erase operations. If a CPU reset occurs with no flash memory reset, improper CPU initialization may occur because the flash memory may be providing status information rather than array data. Intel(R) Flash memory devices allow proper CPU initialization following a system reset through the use of the RST# input. RST# should be controlled by the same low-true reset signal that resets the system CPU.
36
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
9.2
Device Commands
Device operations are initiated by writing specific device commands to the Command User Interface (CUI). (See Table 15.)
Table 15. Command Bus Definitions (Sheet 1 of 2)
Command Bus Cycles First Bus Cycle Type Addr Data Type Second Bus Cycle Addr Data
Read Array Read Identifier
Read
1 2 2
Write Write Write Write Write
Any Address Any Address Any Address Address within Block Any Address Address of memory location to be programed Address within Block Address of memory location to be programed Address within Block Any Address Any Address
0xFF 0x90 0x98 0x70 0x50 0x40 or 0x10 0xE8
Read Read Read Read
Address of memory to be read Identifier Code Address Query Code Address Address with Block
Array Data Identifier Code Data Query Code Data Status Register Data
Read Query (CFI) Read Status Register Clear Status Register Program
2 1
2 Number of buffer words + 3
2
Write
Write
Address of memory to be programed Address within Block Address within Block Address within Block
Data to be programed Number of words to be written to buffer 0xD0 0xD0
Program
Write to Buffer4
Write
Write
Buffered EFP
Erase Suspend Resume
Write Write Write Write
0x80 0x20 0xB0 0xD0
Write Write
Block Erase Erase/Program Suspend Erase/Program Resume
2 1 1
Datasheet
37
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 15. Command Bus Definitions (Sheet 2 of 2)
Command Bus Cycles First Bus Cycle Type Addr Data Type Second Bus Cycle Addr Data
Read Configuration Register
Register Configuration (Burst, Lock, STS and Protection)
2 2 2 2 2
Write Write Write Write Write
CD1 Address within Block Address within Block Address within Block Any Address
0x60 0x60 0x60 0x60 0xB8
Write Write Write Write Write
CD1 Address within Block Address within Block Address within Block Any Address
0x03 0x01 0xD0 0x2F CC2 Data to be programmed to the Protection Register 0xFFFD
Lock Block Unlock Block Lock-Down Block STS Protection Program
2
Write
PA
5
0xC0
Write
PA
5
Lock Protection Program Lock 2K OTP Protection
2
Write
Lock Protection Address for 128bit Lock Protection Address for 2K-bit
0xC0
Write
Lock Protection Address for 128-bit LPA1
2
Write
0xC0
Write
LPD3
NOTES: 1. CD = Configuration register data presented on device addresses A[AMIN+15:AMIN]. A[AMAX:AMIN+16] address bits must be cleared. See Table 16, "Read Configuration Register" on page 40 for RCR bit descriptions. 2. CC = STS Configuration code on D[7:0]. 3. LPD = Lock Protection Register1 Data. Valid values are between 0xFFFE and 0x0000. 4. The second cycle of the Write-to-Buffer command is the count of words to load into the buffer, followed by data streaming up to the count value. Then a Confirm command (0xD0) is issued to execute the program operation. Refer to Figure 25, "Write to Buffer Flowchart" on page 70. 5. PA = Valid Protection Register Address.
38
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
10.0
Read Modes
The device supports four types of read modes: read array, read identifier, read status or read query. Upon power-up or return from reset, the device defaults to read array mode. To change the device's read mode, the appropriate Read command must be written to the device. (See Section 9.2, "Device Commands" on page 37.) See Section 14.0, "Special Modes" on page 56 for details regarding read status, read ID, and CFI query modes. The device supports two types of array read modes: asynchronous page mode and synchronous burst mode. Asynchronous page mode is the default read mode after powered-up, or after a reset. The RCR must be configured to enable Synchronous Burst reads of the flash memory array. (See Section 10.3, "Read Configuration Register" on page 40.) The Read Array command functions independent of VPEN. The following sections describes readarray mode operations in detail.
10.1
Asynchronous Page-Mode Read
Asynchronous page mode is the default read mode upon power-up or return from reset. However, to perform array reads after any other device operation (e.g., a write operation), the Read Array command must be issued in order to read from the flash memory. Asynchronous page-mode reads are permitted in all blocks, and it is used to access device register information. Note: Asynchronous page mode reads can only be performed when RCR bit 15 is set (default). (See Section 10.3, "Read Configuration Register" on page 40.) To perform an asynchronous page-mode read, an address is driven onto A[AMAX:AMIN], and CE# and OE# are asserted. WE# and RST# must be de-asserted. ADV# must be held low throughout the read cycle. CLK and WAIT are not used for asynchronous page-mode reads. If only asynchronous reads are to be performed, it is recommended that CLK be tied to a valid VIH level. Array data is driven out on D[15:0] after a minimum delay. (See Section 7.1, "Read Operations" on page 24.) In asynchronous page mode, one of 16 eight-word groups are "sensed" simultaneously from the flash memory and loaded into an internal page buffer. After the initial access delay, the first word out of the data buffer corresponds to the initial address, A[AMAX:AMIN]. Address bits A[AMAX:AMIN + 3] are latched by the device. However, the lower address bits, A[AMIN +2:AMIN], are not latched. Address bits A[AMIN+2:AMIN] determine which word of the eight-word group is output from the data buffer at any given time. Subsequent reads from the device come from the page buffer, and are output on D[15:0] after a minimum delay, as long as address bits A[AMIN+2:AMIN] are the only address bits that change. Data can be read from the page buffer multiple times, and in any order. If address bits A[AMAX:AMIN+3] change at any time, or if CE# is toggled, the device will sense and load a new eight-word group from the flash memory into the page buffer. By controlling certain signals, such as CE# and/or OE#, the device can be made to output less than eight-words of data. Asynchronous page-mode read is used to access register information, but only one word is loaded into the page buffer.
Datasheet
39
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
10.2
Synchronous Burst-Mode Read
Since asynchronous page mode is the default read mode following a device power-up or reset, the appropriate bits in the RCR must be set before synchronous burst mode reads of the flash memory can occur. See Section 10.3, "Read Configuration Register" on page 40 for details. Immediately after configuring the RCR, it is not necessary to issue the Read Array command (0xFF) before performing a synchronous burst-mode read. However, to perform a synchronous burst-mode read after executing any other device operation (e.g., a write operation), it is necessary to issue the Read Array command before performing a synchronous burst-mode read of the flash memory. To perform a synchronous burst-mode read, an address is driven onto A[AMAX:AMIN], and CE# and OE# are asserted. WE# and RST# must be de-asserted. ADV# is asserted, then de-asserted to latch the address. Alternatively, ADV# can remain asserted throughout the burst access, in which case, the address is latched on the next valid CLK edge. In synchronous burst mode, one or two of the 16 eight-word groups are "sensed" simultaneously from the flash memory and loaded into an internal page buffer. After the initial access delay, the first word is output from the data buffer on the next valid CLK edge. Subsequent buffer data is output on valid CLK edges. Synchronous burst-mode reads can only step through the data buffer once, and can only do so in a sequential manner; starting from the address latched at the beginning of the burst cycle (see Section 7.1, "Read Operations" on page 24). The device supports 8- or 16- word bursts. However, by controlling certain control signals, such as CE# and/or OE#, the device can output less than 8/16-words of synchronous data. A burst-mode read can be used to access register information. When a burst-mode read is performed on a register, only one word is loaded into the data buffer. In burst mode, the address is latched by either the rising edge of ADV# or the next valid edge of CLK with ADV# low, whichever occurs first.
10.3
Read Configuration Register
The Read Configuration Register (RCR) is used to select the read mode (synchronous or asynchronous), and it defines the synchronous burst characteristics of the device. To modify the RCR settings, write the RCR command to the device (see Section 9.0, "Bus Operations" on page 35). RCR contents can be examined by writing the Read Identifier command to the device. See Section 14.2, "Read Device Identifier" on page 57). The RCR Register is shown in Table 16. The following sections describe each RCR bit in detail.
il.
Table 16. Read Configuration Register (Sheet 1 of 2) Read Configuration Register (RCR)
15 Read Mode 14 13 12 11 10 WAIT Polarity 9 Data Hold 8 WAIT Delay 7 Burst Seq 6 CLK Edge 5 RES 4 RES
Default Value = 0xFFC7
3 RES 2 1 Burst Length 0
Latency Count
RM Bit
LC[3:0] Name
WP
DH
WD
BS
CE
R
R
R
BL[2:0]
Description
15
Read Mode (RM)
0 = Synchronous burst-mode read 1 = Asynchronous page-mode read (default)
40
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 16. Read Configuration Register (Sheet 2 of 2)
14:11 Latency Count (LC[3:0]) 0000 = Code 0. RFU 0001 = Code 1. RFU 0010 =Code 2 0011 =Code 3 0100 =Code 4 0101 =Code 5 0110 = Code 6 0111 = Code 7 1000 = Code 8 1001 = Code 9 1010 = Code 10 1011 - 1111 = Code 11 - Code 15. All these codes are RFU 0 = WAIT signal is active low 1 = WAIT signal is active high (default) 0 = Hold data for one clock 1 = Hold data for two clocks (default) 0 = WAIT de-asserted with valid data 1 = WAIT de-asserted one clock before valid data (default) 0 = Reserved 1 = Linear (default) 0 = falling edge 1 = rising edge (default) 000 - Cannot be changed 001 = RFU 010 = 8-word burst 011 = 16-word burst 111 = RFU (default)
10 9 8 7 6 5:3 2:0
Wait Polarity (WP) Data Hold (DH) Wait Delay (WD) Burst Sequence (BS) Clock Edge (CE) Reserved (R) Burst Length (BL[2:0])
10.3.1
Read Mode
The read mode (RM) bit selects synchronous burst mode or asynchronous page mode operation of the device. When the RM bit is set, asynchronous page mode is selected (default). When RM is cleared, synchronous burst mode is selected. Synchronous burst mode is used for array reads, whereas asynchronous page mode is used for reading array data, Status Register information, Device ID information, and CFI information. Note that when operating in synchronous burst mode, Status, ID, and CFI information will be driven onto the bus on the next valid clock edge following the initial synchronous access delay, and will remain on the bus for the duration of the access cycle.
10.3.2
Latency Count
The Latency Count bits, LC[3:0], tell the device how many clock cycles must elapse from the rising edge of ADV# (or from the first valid clock edge after ADV# is asserted) until the first data word is to be driven onto D[15:0]. Table 20 on page 42 shows the data output latency for the valid settings of LC[3:0]. See Table 17 on page 42 for latency setting values matched for input clock frequencies.
Datasheet
41
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 20. First-Access Latency Count
CLK [C]
Valid Address
Address [A]
ADV# [V] Code 0 (Reserved) DQ15-0 [D/Q] DQ15-0 [D/Q] DQ15-0 [D/Q] DQ15-0 [D/Q] DQ15-0 [D/Q] DQ15-0 [D/Q] DQ15-0 [D/Q] DQ15-0 [D/Q]
Valid Output Valid Output Valid Output Valid Output Valid Output Valid Output Valid Output Valid Output
Code 1
(Reserved
Valid Output Valid Output Valid Output Valid Output Valid Output Valid Output Valid Output
Code 2
Valid Output
Valid Output
Valid Output
Valid Output
Valid Output
Valid Output
Code 3
Valid Output
Valid Output
Valid Output
Valid Output
Valid Output
Code 4
Valid Output
Valid Output
Valid Output
Valid Output
Code 5
Valid Output
Valid Output
Valid Output
Code 6
Valid Output
Valid Output
Code 7
Valid Output
Table 17. Latency Count Table
LC Setting 2 3 4 5 6 7 64 Mb K18 K3 K18 128 Mb K3 K18 256 Mb K3
1 to 21 MHz 22 to 31 MHz 32 to 42 MHz 43 to 50 MHz na na
1 to 20 MHz 21 to 30 MHz 31 to 41 MHz 42 to 51 MHz 51 to 61 MHz 62 to 66 MHz
1 to 20 MHz 21 to 30 MHz 31 to 40 MHz 41 to 50 MHz na na
1 to 19 MHz 20 to 29 MHz 30 to 39 MHz 40 to 49 MHz 50 to 59 MHz 59 to 66 MHz
1 to 19 MHz 20 to 28 MHz 29 to 38 MHz 39 to 47 MHz 48 to 50 MHz na
1 to 18 MHz 19 to 28 MHz 29 to 37 MHz 38 to 46 MHz 47 to 56 MHz 57 to 66 MHz
42
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 21 shows an example of a LC setting of Code 3. Figure 21. Example Latency Count Setting
tData
0
1
2
3
4
CLK CE# ADV# A[MAX:0]
Code 3 Address
D[15:0]
High-Z
Data
R103
10.3.3
WAIT Polarity
The WAIT Polarity (WP) bit selects the asserted, or true, state of WAIT. When WP is set, WAIT is an active-high signal (default). When WP is cleared, WAIT is an active-low signal.
10.3.4
Data Hold
For burst read operations, the Data Hold (DH) bit determines whether the data output remains valid on D[15:0] for one or two clock cycles. When DH is set, output data is held for two clocks (default). When DH is cleared, output data is held for one clock cycle. (See Figure 22.) The processor's data setup time and the flash memory's clock-to-data output delay should be considered in determining whether to hold output data for one or two clocks.
Figure 22. Data Hold Timing
CLK [C] 1 CLK Data Hold 2 CLK Data Hold
Valid Output Valid Output Valid Output
DQ15-0 [D/Q] DQ15-0 [D/Q]
Valid Output
Valid Output
Datasheet
43
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
10.3.5
WAIT Delay
The WAIT Delay (WD) bit controls the WAIT signal's delay behavior during synchronous burst reads. WAIT can be asserted either during, or one clock cycle before, valid data is output on D[15:0].When WD is set, WAIT is de-asserted one clock before valid data (default). When WD is cleared, WAIT is de-asserted with valid data. The setting of WD is dependent on the system and CPU data sampling requirements.
10.3.6
Burst Sequence
The Burst Sequence (BR) bit selects linear-burst sequence (default). Only linear-burst sequence is supported. Table 18 shows the synchronous burst sequence for all burst lengths.
Table 18. Burst Sequence Word Ordering
Burst Addressing Sequence (DEC) Start Addr. (DEC)
8-Word Burst (BL[2:0] = 010) 0-1-2-3-4-5-6-7 1-2-3-4-5-6-7-0 2-3-4-5-6-7-0-1 3-4-5-6-7-0-1-2 4-5-6-7-0-1-2-3 5-6-7-0-1-2-3-4 6-7-0-1-2-3-4-5 7-0-1-2-3-4-5-6 ...
16-Word Burst (BL[2:0] = 011) 0-1-2-3-4...14-15 1-2-3-4-5...15-0 2-3-4-5-6...0-1 3-4-5-6-7...1-2 4-5-6-7-8...2-3 5-6-7-8-9...3-4 6-7-8-9-10...4-5 7-8-9-10-11...5-6 ...
0 1 2 3 4 5 6 7 ... 14 15 ...
14-15-0-1-2...12-13 15-0-1-2-3...13-14 ... ...
10.3.7
Clock Edge
The Clock Edge (CE) bit selects either a rising (default) or falling clock edge for CLK. This is the clock edge that is used at the start of a burst cycle to output synchronous data and to assert/deassert WAIT.
10.3.8
Burst Length
BL[2:0] selects the linear burst length for all synchronous burst reads of the flash memory. The burst length can be configured to be an 8-word or a 16-word burst. Once a burst cycle begins, the device will output synchronous burst data until it reaches the end of the burstable address space.
44
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
11.0
Program Modes
The device supports three different programming methods: Word Programming, Write-Buffer Programming, and Buffered Enhanced Factory Programming or Buffered-EFP. Successful programming requires the addressed block to be unlocked. If the block is locked down, WP# must be de-asserted and the block unlocked before attempting to program the array. An attempt to program a locked block will result in the operation aborting, and SR[1] and SR[4] being set, indicating a programming error. The following sections describe device programming in detail.
11.1
Word Programming
Word Programming is performed by executing the Word Program command. Word Programming is a non-buffered operation and programs one word to the flash array based on the initial program address A[AMAX:AMIN]. To determine the status of a word-program operation, poll the status register and analyze the bits. If the flash device is put in standby mode during a program operation, the device will continue to program the word until the operation is complete; then the device will enter standby mode. Refer to Figure 26, "Word Programming Flowchart" on page 71 for a detailed flow on how to implement a word program operation. During programming, the Write State Machine executes a sequence of internally-timed events that program the desired data bits and verifies that the bits are sufficiently programmed. Programming the flash memory array changes "ones" to "zeros." Memory array bits that are zeros can be changed to ones only by erasing the block. When programming has finished, Status Register bit SR4 set indicates a programming failure. If SR3 is set, this indicates that the Write State Machine could not perform the Word Programming operation because VPEN was outside of its acceptable limits. If SR1 is set, the Word Programming operation had attempted to program a locked block, causing the operation to abort. After examining the status register, it should be cleared using the Clear Status Register command before issuing a new command. Any valid command can follow, after Word Programming has completed.
11.2
Write-Buffer Programming
The device features a 32-word Write Buffer to allow optimum programming performance. For Write-Buffer Programming, data is first written to an on-chip write buffer, then programmed into the flash memory array in buffer-size increments. Optimal performance is realized when programming is buffer-size aligned to the 32-word write-buffer boundary. The write-buffer is directly mapped to the flash array through A[AMIN+4:AMIN]. Unaligned buffered writes will decrease program performance. Buffered writes can improve system programming performance more than 20X over non write-buffer programming. To perform Write-Buffer Programming, the Write-to-Buffer Setup command, 0xE8, is issued along with the block address (see Section 9.2, "Device Commands" on page 37). Status Register information is updated, and a read from the block address will return Status Register data showing the write buffer's availability. Note: Do not issue the Read Status Register command during this sequence. SR7 indicates the availability of the write buffer for loading data. If SR7 is set, the write
Datasheet
45
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
buffer is available; if not set, the write buffer is not available. To retry, issue the Write-to-Buffer Setup command again, and re-check SR7. When SR7 is set, the write buffer is available. See Figure 25, "Write to Buffer Flowchart" on page 70. Next, a word count (actual word count - 1) is written to the device at the buffer address. This tells the device how many data words will be written to the write buffer, up to the maximum size of the write buffer. The valid range of values for word count is 0x00 to 0x1F. On the next write, a device start address is given along with the first data to be written to the flash memory array. Subsequent writes provide additional device addresses and data. All data addresses must lie within the start address plus the word count. Maximum programming performance and lower power are obtained by aligning the starting address at the beginning of a 32 word boundary. A misaligned starting address will result in a doubling of the total program time. After the last data is written to the write buffer, the Write-to-Buffer Confirm command is issued. The Write State Machine begins to copy the write buffer contents to the flash memory array. If a command other than the Write-to-Buffer Confirm command is written to the device, a command sequence error will occur and Status Register bits SR4, SR5 and SR7 will be set. If an error occurs while writing to the array, the device will stop programming, and Status Register bit SR4 and SR7 will be set, indicating a programming failure. Additional buffer writes can be initiated by issuing another Write-to-Buffer Setup command and repeating the write-to-buffer sequence. Anytime SR4 and SR5 are set, the device will not accept Write-to-Buffer commands. If an attempt is made to program past a block boundary using the Write-to-Buffer command, the device will abort the operation. This will generate a command sequence error, and Status Register bits SR4 and SR5 will be set. If Write-Buffer Programming is attempted while VPEN is below VPENLK, Status Register bits SR3 and SR4 will be set. If any errors are detected that have set Status Register bits, the Status Register should be cleared using the Clear Status Register command.
11.3
Program Suspend
To execute a program suspend, execute the Program Suspend command. A suspend operation halts any in-progress programming operation. The Suspend command can be written to any device address. A Suspend command allows data to be accessed from any memory location other than those suspended. A program operation can be suspended to perform a device read. A program operation nested within an erase suspend operation can be suspended to read the flash device. Once the program process starts, a suspend operation can only occur at certain points in the program algorithm. Erase suspend operations cannot resume until program operations initiated during the erase suspend are complete. All device read functions are permitted during a suspend operation. During a suspend, VPEN must remain at a valid program level and WP# must not change. Also, a minimum amount of time is required between issuing a Program or Erase command and then issuing a Suspend command.
46
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
11.4
Program Resume
To resume (i.e., continue) a program suspend operation, execute the Program Resume command. The Resume command can be written to any device address. When a program operation is nested within an erase suspend operation and the Program Suspend command is issued, the device will suspend the program operation. When the Resume command is issued, the device will resume and complete the program operation. Once the nested program operation is completed, an additional Resume command is required to complete the block erase operation. The device supports a maximum suspend/resume of two nested routines. See Figure 27, "Program Suspend/Resume Flowchart" on page 72.
11.5
Buffered Enhanced Factory Programming (Buffered-EFP)
Buffered-EFP speeds up MLC flash programming for today's beat-rate-sensitive manufacturing environments. This enhanced algorithm eliminates traditional elements that drive up overhead in off-board or on-board, off-line or in-line, manual or automated programmer systems. Buffered-EFP is different than non-buffered EFP mode; it incorporates a write buffer to spread MLC program performance across 32 data words. Additionally, verification occurs in the same phase as programming, an inherent requirement of two-bit-per-cell technology to accurately program the correct state. A single two-cycle command sequence programs an entire block of data. This enhancement eliminates three write cycles per buffer page, two commands and the word count per each set of 32 data words. Host programmer bus cycles fill the device write buffer, followed by a status check of SR.0 to determine when the data from that page has completed programming into sequential flash memory locations. Following the buffer-to-flash programming sequence, the WSM increments internal addressing to automatically select the next 32-word array boundary. This aspect of Buffered-EFP saves programming equipment address-bus setup overhead. In combination, these enhancements allow programming equipment to stream data to the device. With proper continuity testing, programming equipment can rely on the WSM internal verification to assure the device has programmed properly. This capability eliminates the external post-program verification and its associated overhead. Buffered-EFP consists of three phases: setup, program/ verify, and exit. Refer to Figure 28, "Buffered Enhanced Factory Programming Procedure Flowchart" on page 73 for a graphical representation of Buffered-EFP.
11.5.1
Buffered-EFP Requirements and Considerations
Buffered-EFP requirements:
* * * * *
Ambient temperature: TA = 25 C 5 C VCC within specified operating range VPEN driven to VPENH Target block unlocked before issuing the Setup and Confirm commands WA0 (first word address in block to be programmed) must be held constant from setup phase through all data streaming in the target block, until transition to the exit phase is desired
* WA0 must align with the start of an array buffer boundary1
Datasheet
47
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Buffered-EFP considerations:
* * * *
For optimum performance, limit cycling below 100 erase cycles per block2 Buffered-EFP programs one block at a time, all buffer data must fall within a single block3 Buffered-EFP cannot be suspended Programming to flash can only occur when the buffer is full4
1 Buffer boundary in array is determined by A[AMIN+4:AMIN] (00h through 1Fh). Alignment start point is A[AMIN+4:AMIN]=0. 2
Some degradation in performance may occur if this limit is exceeded, but the internal algorithm will continue to work properly. If the internal address counter increments beyond the block's maximum address, addressing will wrap around to the beginning of the block.
3
4
If the number of words is less than 32, as in the case of the last page program sequence for a block, remaining locations must be filled with FFFFh. The responsibility to manage this falls within the programming equipment, not the customer data file.
See Figure 28, "Buffered Enhanced Factory Programming Procedure Flowchart" on page 73, for a detailed flowchart of the Buffered-EFP operation.
11.5.2
Buffered-EFP Setup Phase
After receiving the Buffered-EFP Setup (80h) and Confirm (D0h) command sequence, device SR.7 transitions from a `1' to a `0,' indicating that the WSM is busy with the Buffered-EFP algorithm startup. A delay before checking SR.7 is required to allow the WSM time to perform all of its setups and checks (block lock status and VPEN level). If an error is detected, SR.4 is set and Buffered-EFP operation terminates. If the block was found locked, SR.1 is also set. SR.3 is set if the error occurred due to the VPEN level being incorrect.
11.5.3
Buffered-EFP Program and Verify Phase
After setup completion, the host programming system must check SR.0 to determine "data-stream ready" status. SR.0=0 indicates that the Buffered-EFP program/verify phase is activated and the write buffer is available. Two basic sequences repeat in this phase: loading the write buffer, followed by buffer data programming to the array. For Buffered-EFP, the count value for buffer loading is always the maximum buffer size of 32 words. During the page loading sequence, data received is stored to sequential buffer locations starting at address 00h. Programming of that page to the flash array starts immediately when the buffer is full.
Warning:
The buffer must be completely full for programming to occur. Supplying an address outside the current block's range during a buffer fill sequence will cause the operation to lockup. If the number of words is less than 32, as in the case of the last page program sequence for a block, remaining locations must be filled with FFFFh. The responsibility to manage this falls within the programming equipment, not the customer data file. Data words from the write buffer are directed to sequential memory locations in the array, programming takes up where the last page sequence left off. The host programming system must poll SR.0 to determine when the page program sequence completes. SR.0=0 indicates that all
Note:
48
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
buffer data has been transferred to the flash array, SR.0=1 indicates that the WSM is still busy. The host system may check full status for errors at any time, but it is only necessary on a block basis, after Buffered-EFP exit. The host programming system continues the Buffered-EFP algorithm by providing the next set of data words to the buffer. Alternatively, it can terminate this phase by changing the block address.The program/verify phase concludes when the interfacing programmer writes to a different block address; data supplied must be FFFFh. Upon program/verify phase completion, the device enters the Buffered-EFP exit phase.
11.5.4
Buffered-EFP Exit Phase
SR.7=1 indicates that the device has returned to normal operating conditions. A full status check should be performed at this time to ensure the entire block programmed successfully. After Buffered-EFP exit, any valid CUI command can be issued. The Buffered-EFP SR.7 and SR.0 Truth table is shown in Table 19.
.
Table 19. Buffered-EFP SR.7 and SR.0 Truth table
SR.7 SR.0 Condition
0 0 1 1
0 1 0 1
Device is BUSY, Buffer is AVAILABLE. Device is BUSY, Buffer is NOT AVAILABLE. Device is READY, Buffer is AVAILABLE. Invalid state.
Datasheet
49
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
12.0
Erase Mode
Flash erasing is performed on a block basis; therefore, only one block can be erased at a time. When a block is erased, all bits within that block will read as a logic level one. To determine the status of a Block Erase, poll the status register and analyze the bits. The following section describes Block Erase operations in detail.
12.1
Block Erase
Block Erase operations are initiated by writing the Block Erase command to the address of the block to be erased (refer to Section 9.2, "Device Commands" on page 37). This is followed by the Block Erase Confirm command written to the address of the block to be erased. If the device is placed in standby (CE# de-asserted) during an erase operation, the device will continue to erase the block until the erase operation is completed before entering standby. VPEN must be above VPENLK and the block must be unlocked (see Figure 29, "Block Erase Flowchart" on page 74). Also, VPEN must remain at a valid level, and WP# must remain unchanged while in erase suspend. During a Block Erase, the Write State Machine executes a sequence of internally-timed events that conditions, erases, and verifies all bits within the block are erased. Erasing the flash memory changes array data from "zeros" to "ones." Status Register bit SR7 indicates Block Erase status while the sequence executes. If Status Register bit SR5 is set after erase completion, this indicates an erase failure. If SR3 is set, this indicates that the Write State Machine could not perform the erase operation because VPEN was outside of its acceptable limits. If SR1 is set, the erase operation attempted to erase a locked block, causing the operation to abort. CE# or OE# must be toggled to update Status Register contents. After examining the status register, it should be cleared using the Clear Status Register command before issuing a new command. Any valid command can follow, once the block erase operation has completed.
12.2
Erase Suspend
Issuing the Erase Suspend command while erasing suspends the block erase operation. This allows data to be accessed from memory locations other than the one being erased. The Erase Suspend command can be issued to any device address within the block. A block erase operation can be suspended to perform either a word program or a read operation within any block, except the block that is in an erase suspend state (see Figure 30, "Erase Suspend/Resume Flowchart" on page 75). When a block erase operation is executing, issuing the Erase Suspend command requests the Write State Machine to suspend the erase algorithm at predetermined points. An erase operation cannot be nested within another erase suspend operation. Block erase is suspended when Status Register bits SR[7,6] are set. Suspend latency is specified in Section 7.3, "Block Erase and Program Operation Performance" on page 31. Block erase cannot resume until program operations initiated during erase suspend complete. Read Array, Read Status Register, Read Identifier, CFI Query, and Program Resume are valid commands during Erase Suspend. Additionally, Clear Status Register, Program, Program Suspend, Erase Resume, Block Lock, Block Unlock, and Block Lock-Down are valid commands during Erase Suspend.
50
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
12.3
Erase Resume
To resume (i.e., continue) an erase suspend operation, execute the Erase Resume command. The Resume command can be written to any device address. When a program operation is nested within an erase suspend operation and the Program Suspend command is issued, the device will suspend the program operation. When the Resume command is issued, the device will resume the program operations first. Once the nested program operation is completed, an additional Resume command is required to complete the block erase operation. The device supports a maximum suspend/resume of two nested routines. See Figure 29, "Block Erase Flowchart" on page 74.
Datasheet
51
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
13.0
Security Modes
This device offers both hardware and software security features. Block lock operations, the Protection Registers, and VPEN enable the user to implement various levels of data protection. The following section describes security features in detail.
13.1
Block Locking Operations
Individual instant block locking is used to protect user code and/or data within the flash memory array. All blocks power up locked to protect array data from being altered during power transitions. Any block can be locked or unlocked without latency. Locked blocks cannot be programmed or erased; they can only be read. Software-controlled security is implemented with the Block Lock and Block Unlock commands. Hardware-controlled security can be implemented with the Block Lock-Down command and WP#. Refer to Figure 23 for a state diagram of the flash security features. Also see Figure 32, "Block Lock Operations Flowchart" on page 77.
Figure 23. Block Locking State Diagram
Power-Up/Reset
Locked [X01]
LockedDown4,5 [011]
Hardware Locked5 [011]
WP# Hardware Control
Unlocked [X00]
Software Locked [111]
Unlocked [110]
Software Block Lock (0x60/0x01) or Software Block Unlock (0x60/0xD0) Software Block Lock-Down (0x60/0x2F) WP# hardware control
Notes:
1. [a,b,c] represents [WP#, D1, D0]. X = Don't Care. 2. D1 indicates block Lock-down status. D1 = `0', Lock-down has not been issued to this block. D1 = `1', Lock-down has been issued to this block. 3. D0 indicates block lock status. D0 = `0', block is unlocked. D0 = `1', block is locked. 4. Locked-down = Hardware + Software locked. 5. [011] states should be tracked by system software to determine difference between Hardware Locked and Locked-Down states.
52
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
13.1.1
Block Lock
All blocks default to the locked state after initial power-up or reset. An unlocked block can be locked by issuing the Block Lock command sequence. This sets the block lock status bit and fully protects the block from program or erase. Attempted program or erase operations to a locked block will return an error in SR1.
13.1.2
Block Unlock
A locked block can be unlocked by issuing the Block Unlock command. All unlocked blocks return to the locked state when the device is reset or powered-down. Unlocked blocks may be programmed or erased.
13.1.3
Block Lock-Down
The Lock-Down Block command adds an additional level of security to the device. Issuing the Lock-Down Block command sets the lock-down status bit and locks the block. The Lock-Down Block command can be used if the block's current state is either locked or unlocked. Once this bit is set, WP# is enabled as a hardware lock control for that particular block. If a block is lockeddown and WP# is de-asserted, the user may issue the Unlock Block command to allow program or erase operations on that block.
Note:
Only device reset or power-down can clear the lock-down status bit.
13.1.4
Block Lock During Erase Suspend
Blocks may be locked, unlocked, or locked down during an erase suspend operation. First, write the Erase Suspend command to the device. After checking SR7 and SR6 to determine that the erase operation has suspended, write the desired lock command sequence to a block. The lock status bit(s) will change immediately. If the block being locked or locked-down is the same block that is suspended, the lock status bit(s) will still change immediately, but the erase operation will complete when resumed. After completing lock, unlock, read, or program operations, resume the erase operation with the Erase Resume command.
Note:
A Block Lock Setup command followed by any command other than Block Lock, Block Unlock, or Block Lock-Down will produce a command sequence error and set Status Register bits SR4 and SR5. If this error occurs while an erase is suspended, SR4 and SR5 will remain set after the erase operation is resumed unless the Status Register is cleared first using the Clear Status Register command. Otherwise, possible erase errors may become masked by the command sequence error. Locking operations cannot occur during program suspend. Appendix A, "Write State Machine (WSM)" on page 59 shows valid commands during erase suspend.
13.1.5
WP# Lock-Down Control
If the lock-down status bit is set for a particular block, the WP# signal is then enabled as a master lock/unlock override for that particular block. When WP# is asserted, all blocks that have the lockdown status bit set are automatically put into the lock-down state and cannot be unlocked with the Unlock Block command. Once WP# is de-asserted, the block reverts back to a locked state; only then can it be unlocked via software.
Datasheet
53
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
13.2
Protection Registers
The device includes 17 128-bit Protection Registers, PR16 through PR0, which can be used to increase system security or to provide identification capabilities. PR0[63:0] are permanently programmed by Intel with a unique number for each flash device. PR0[127:64] and PR1 through PR16 are one-time programmable (OTP) and available for the customer to program. Once programmed, the user-programmable registers can be locked to prevent further programming. Note: User-programmable bits are OTP and may be programed individually. However, once the protection register is locked, the entire user segment is locked and no more user bits may be programmed.
Figure 24. Protection Register Memory Map
0x109 PR16
(User-Programmable)
0x102 0x91 PR1
(User-Programmable)
0x8A PR Lock Register 1 0x89
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0x88 PR0 User-Programmable 0x85 0x84 Intel Factory-Programmed 0x81 PR Lock Register 0 0x80
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
54
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
13.2.1
Reading the Protection Registers
To read Protection Register data, issue the Read Identifier command along with the address corresponding to the desired word of register data. (See Figure 24 on page 54.) Protection Register data is read 16 bits at a time.
13.2.2
Programming the Protection Registers
To program a Protection Register, issue the Protection Program command, plus a desired Protection Register offset. See Figure 24 on page 54 for appropriate address offsets of the Protection Register. Only one word may be programmed to the user segment at a time. Issuing the Protection Program command outside the register's address space results in a status register error (SR4=1).
13.2.3
Locking the Protection Registers
To lock a Protection Register, program the corresponding bit in the PR Lock Register by issuing the Program PR Lock Register command followed by the desired PR Lock Register data. Bit 0 of PR Lock Register 0 is already programmed at the Intel factory and locks PR0[63:0]. Bit 1 of PR Lock Register 0 can be programmed by the user to lock the user-programmable portion of Protection Register 0, namely PR0[128:64]. The rest of the bits in PR Lock Register 0 are not used. PR Lock Register 1 controls the locking of the remaining 128-bit Protection Registers. Each of the 16 bits of PR Lock Register 1 corresponds to one of the 16 128-bit Protection Registers. For example, to lock PR6, program bit 5 in PR Lock Register 1. After PR Lock Register bit 1 is programmed (locked), the user segment of the Protection Register cannot be changed. Protection Program commands written to a locked section result in a status register error (SR[5:4]=0b11).
13.3
Array Protection
The VPEN signal is a hardware mechanism to prohibit array alteration. When the VPEN voltage is below the VPENLK voltage, array contents cannot be altered. To ensure a proper erase or program operation, VPEN must be set to a valid voltage level. To determine the status of an erase or program operation, poll the status register and analyze the bits.
Datasheet
55
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
14.0
Special Modes
This section describes in details how to read the status, ID and CFI registers. This sections also details how to configure the STS signal.
14.1
Read Status Register
The status of the device can be determined by reading the Status Register. To read the Status Register, issue the Read Status Register command. Status Register data is automatically made available following a Word Program, Block Erase, or Block Lock command sequence. Subsequent reads from the device after any of these command sequences will output that the device's status until another valid command is written to the device (e.g. Read Array). The Status Register is read using single asynchronous- and single synchronous-reads only; page- or burst-mode reads cannot be used to read the Status Register. Status Register data is output on D[7:0], while 0x00 is output on D[15:8]. The falling edge of OE# or CE# (which ever occurs first) updates and latches the Status Register contents. The Ready bit (SR7) provides overall status of the device. Status register bits SR[6:1] present status and error information about the Program, Erase, Suspend, VPEN, and Block-Locked operation. Care should be taken to avoid Status Register ambiguity when issuing valid 2-cycle commands during Erase Suspend. If a command sequence error occurs during an erase-suspend state, the Status Register will contain the command sequence error status (SR[7,5:4] set). When the erase operation resumes and finishes, possible errors during the erase operation cannot be detected via the Status Register because it will contain the previous error status. To avoid this situation, always clear the Status Register prior to resuming erase operations.
Table 20. Status Register Description (Sheet 1 of 2) Status Register (SR)
Ready RDY 7 Bit
7 6 5 4 3
Default Value =0x80 Erase Error EE 5 Program Error PE 4 VPEN VE 3 Program Suspend PS 2 Description
0 = Device is busy; program or erase cycle in progress; SR[0] valid. 1 = Device is ready; SR[6:1] are valid. 0 = Erase suspend not in effect. 1 = Erase suspend in effect. 0 = Erase successful. 1 = Erase fail or Program Sequence Error when set with SR[7,4]. 0 = Program successful. 1 = Program fail or Program Sequence Error when set with SR[7,5] 0 = VPEN within acceptable limits during program or erase operation. 1 = VPEN < VPENLK during program or erase operation.
Erase Suspend ES 6
BlockLocked Error LE 1
Buffered-EFP Status PS 0
Name
Ready (RDY) Erase Suspend (ES) Erase Error (EE) Program Error (PE) VPEN Error (VE)
56
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 20. Status Register Description (Sheet 2 of 2) Status Register (SR)
2 1 Program Suspend Block-Locked Error (LE) 0 = Program suspend not in effect. 1 = Program suspend in effect. 0 = Block not locked during program or erase. 1 = Block locked during program or erase; operation aborted. Default Value =0x80
0
After Buffered-EFP data is loaded into the buffer: Buffered-EFP Status (PS) 0 = Buffered-EFP complete. 1 = Buffered-EFP in progress.
14.1.1
Clear Status Register
The Clear Status Register command clears the status register and functions independent of VPEN. The Write State Machine sets and clears status bits (SR[7:6,2,0]), but it only sets error bits (SR[5:4,3,1]). The Status Register should be cleared before starting a command sequence to avoid any ambiguity. A device reset also clears the Status Register.
14.2
Read Device Identifier
The Read Device Identifier command instructs the device to output Manufacturer/ Device Identifier codes, block-lock status, Protection Register data, and Configuration Register data when read. (See Section 9.2, "Device Commands" on page 37 for details on issuing the Read Device Identifier command.)
Table 21. Device Identifier Codes
Item Manufacturer Code K3 64 Mb Device Code K3 128 Mb Device Code K3 256 Mb Device Code K18 64 Mb Device Code K18 128 Mb Device Code K18 256 Mb Device Code Block is Unlocked Block is Locked Block Address + 0x2 Block is not Locked-Down Block is Locked-Down Configuration Register Protection Register Lock 2K-OTP Lock Protection Register 2K OTP Space 0x5 0x80 0x89 0x81 - 0x88 0x8A - 0x109 Address 0x0 0x1 0x1 0x1 0x1 0x1 0x1 Data(1) 0x89 0x8801 0x8802 0x8803 0x8805 0x8806 0x8807 DQ0 = 0 DQ0 = 1 DQ1 = 0 DQ1 = 1 Configuration Register Content Protection Register Lock OTP Lock Protection Register Content OTP Content
NOTE: Data is always available on D[7:0]. D[15:8] is 0x00.
Datasheet
57
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
14.3
Read Query/CFI
The query register contains an assortment of flash product information such as block size, density, allowable command sets, electrical specifications and other product information. The data contained in this register conforms to the Common Flash Interface (CFI) protocol. To obtain any information from the query register, execute the Read Query Register command. See Section 9.2, "Device Commands" on page 37 for details on issuing the CFI Query command. Refer to Appendix B, "Common Flash Interface" on page 64 for a detailed explanation of the CFI register. Information contained in this register can only be accessed by executing a single-word read.
14.4
STS Configuration (Easy BGA package ONLY)
To configure the STS signal, execute the Configuration command. The STS signal can be configured for level or pulse mode. Once configured to a particular mode, it remains in that mode until the device is powered down, reset or another Configuration command is issued to change the mode. After power-up or reset, the default configuration is level mode. Level mode works similar to a Ready/Busy signal (RY/BY#), indicating the status of the Write State Machine (WSM) during a program or erase operation. The STS Configuration command may only be given when the device is not busy or suspended. The possible STS configurations and usage are described in Table 22.
Table 22. STS Configuration Coding Definitions
DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 Pulse on Program Complete (1) Notes
Used to control HOLD to a memory controller to prevent accessing a flash memory subsystem while any flash device's WSM is busy. Used to generate a system interrupt pulse when any flash device in an array has completed a block erase. Helpful for reformatting blocks after file system free space reclamation or "cleanup." Used to generate a system interrupt pulse when any flash device in an array has completed a program operation. Provides highest performance for servicing continuous buffer write operations. Used to generate system interrupts to trigger servicing of flash arrays when either erase or program operations are completed, when a common interrupt service routine is desired.
DQ0 Pulse on Erase Complete (1)
Reserved
DQ1-DQ0 = STS Configuration Codes
00 = default, level mode; device ready indication 01 = pulse on Erase Complete
10 = pulse on Program Complete 11 = pulse on Erase or Program Complete
NOTES: 1. When configured in one of the pulse modes, STS pulses low with a typical pulse width of 250 ns. 2. An invalid configuration code will result in both status register bits SR.4 and SR.5 being set.
58
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Appendix A Write State Machine (WSM)
A.1 Nomenclature
Table 23. Arrangement Of Next State Table Pages
Next States
Part A / page 1
Current States
Part B / page 1
Part A / page 2
Part B / Page 2
Note:
Numbered notes referenced in superscript can be found at the end of the last table.
Datasheet
59
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 24. Next State Table Part A
Command Input and Next State Current State SR7 SR0 Data When Read Read Array 0xFF
Read Array Read Array Read Array Read Array
Program Setup 0x10/ 0x40
Program Setup Program Setup Program Setup Program Setup
Write to Buffer Setup2,3 0xE8
Write to Buffer Setup Write to Buffer Setup Write to Buffer Setup Write to Buffer Setup
BEFP Setup1 0x30
BEFP Setup BEFP Setup BEFP Setup BEFP Setup
Erase Setup 0x20
Erase Setup Erase Setup Erase Setup Erase Setup
Erase/ BEFP/ Program/ Program/ Erase Erase Unlock Confirm7 Suspend5 Confirm7 0xB0 0xD0 0xD0
Read Array Read Array Read Array Read Array Read Status Read Status Read Status Read Status
Read Array Read Status Read Config Read Query Lock Setup
6
1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0
Array Status Config CFI Status Status
Botch (command seq.error) if second cycle is anything other than 0xD0, 0x01, 0x2F, or 0x03 Botch Erase Susp.(command seq. error) if second cycle is anything other than 0xD0, 0x01, 0x2F, or 0x03
Lock Setup Erase Susp6 Botch (command seq. error)9 Botch Erase Susp.(command seq. error)9 Botch Prog. Susp.(command seq. error)9 Botch Both Susp.8 OTP/Prot. Prog. Setup OTP/Prot Prog. (busy) OTP.Prot Prog. (done) Prog. Setup Prog. Setup Ers. Susp. Program (busy) Program (busy) Ers. Susp. Read Status Prog. Susp. Read Array Prog. Susp. Read Config Prog. Susp. Read Query Prog. Susp. Program (done) Read Status Both Susp.8 Read Array Both Susp.8 Read Config Both Susp.8 Read Query Both Susp.8 BEFP Setup BEFP Setup-time BEFP Load
Status
Read Array
Program Setup
Botch
BEFP Setup
Erase Setup
Read Array
Read Status
Status
Read Array Ers. Susp.
Program Setup Ers. Susp.
Botch Erase. Susp.
Read Status Ers. Susp.
Read Array Ers. Susp.
Read Array Ers.Susp.
Erase
Read Status Ers. Susp.
1 1 1 0 1 1 1 0 0 1 1 1 1 1 1 1 1 1 1 0 0
0 0 0 z 0 0 0 z z 0 0 0 0 0 0 0 0 0 0 1 0
Status
Read Array Prog. Susp. Read Array Both Susp.
Read Array Prog. Susp. Read Array Both Susp.
Botch Prog. Susp. Botch Both Susp.
Read Array Prog. Susp.
Read Array Prog. Susp. Read Array Both Susp.
Program (busy)
Read Status Prog. Susp. Read Status Both Susp.
Status
Read Array Both Susp.
Program (busy) Ers. Susp.
Status
OTP/Protection Register Program
Status
OTP/Protection Register Program (busy)
Status Status Status
Read Array
Program Setup
Write to Buffer Setup
BEFP Setup
Erase Setup
Read Array
Read Status
Program (busy) Program (busy) Ers. Susp. Read Status Prog. Susp. Read Status Both Susp. Read Array Prog. Susp. Read Array Prog. Susp. Read Array Prog. Susp. Read Array Prog. Susp. Erase Setup Read Status Prog. Susp. Read Status Prog. Susp. Read Status Prog. Susp. Read Status Prog. Susp. Read Status Read Status Both Susp. Read Status Both Susp. Read Status Both Susp. Read Status Both Susp.
Status Status
Program (busy) Program (busy) Ers. Susp.
Status
Read Array Prog. Susp. Read Array Prog. Susp. Read Array Prog. Susp. Read Array Prog. Susp. Read Array Program Setup
Read Array Prog. Susp.
Program (busy)
Array
Read Array Prog. Susp.
Program (busy)
Config
Read Array Prog. Susp.
Program (busy)
CFI Status
Read Array Prog. Susp. Write to Buffer Setup BEFP Setup
Program (busy)
Read Array Program (busy) Ers. Susp. Program (busy) Ers. Susp. Program (busy) Ers. Susp. Program (busy) Ers. Susp. BEFP Setuptime
Status
Read Array Both Susp.
Array
Read Array Both Susp.
Config
Read Array Both Susp.
CFI Status Status Status
Read Array Both Susp. Botch (command seq. error)
Botch (command seq. error)
If Time-out > 5 us, go to BEFP Load; If Time-out < 5 us, stay in BEFP Setup-time Initialize buffer load count to 31; if buffer count=0, then go to BEFP (busy); For buffer count>0 and same block addr. stay in BEFP Load; If block addr. changed, go to BEFP exit
60
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 24. Next State Table Part A
Command Input and Next State Current State SR7 SR0 Data When Read Read Array 0xFF Program Setup 0x10/ 0x40 Write to Buffer Setup2,3 0xE8 BEFP Setup1 0x30 Erase Setup 0x20 Erase/ Program/ Program/ BEFP/ Erase Erase Unlock Confirm7 Suspend5 Confirm7 0xB0 0xD0 0xD0
BEFP (busy) BEFP Exit (Busy) BEFP Exit Write to Buffer setup Count Load Data Load Write to Buffer Confirm Write to Buffer setup Ers. Susp. Count Load Ers. Susp. Data Load Ers. Susp. Write to Buffer confirm Ers. Susp. Erase Setup Erase (busy) Read Status Ers. Susp. Read Array Ers. Susp. Read Config Ers. Susp. Read Query Ers. Susp. Erase (done) STS Reconfig Setup STS Reconfig Setup Ers. Susp. STS Reconfig Setup Prog. Susp. STS Reconfig Setup Both Susp.
0 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1
1 1 0 0 0 0 0 0 0 0 0 0 z 0 0 0 0 0 0 0 0 0
Status Status Status Read Array
To exit, change block addr; to continue proceed to BEFP after SR0=0. Internally timed; Go to BEFP Exit after internal timeout; Transition indicated by SR0=0 Program Setup Write to Buffer Setup BEFP Setup Erase Setup Read Array Read Status
Status Status Status Status
Repeat command until SR7=1. Next cycle will be interpreted as Count Load. Word count load (Actual number of words-1). Lowest five bits will be assumed as the count. Device assumes next cycles will be Data Load. Data load; To quit or abort, change the block address during a write. The UI will botch on a block change. Repeat Data Load until Word Count is reached, next command must be Write to Buffer Confirm Botch (command seq. error) Program (busy) Botch (command seq. error)
Status
Repeat command until SR7=1. Next cycle will be interpreted as Count Load Ers. Susp..
Status
Word count load (Actual number of words-1). Lowest five bits will be assumed as the count. Device assumes next cycles will be Data Load Ers. Susp.. Data load; To quit or abort, change the block address during a write. The UI will botch on a block change. Repeat Data Load until Word Count is reached, next command must be Write to Buffer Confirm Ers. Susp.
Status
Status Status Status Status Read Array Ers. Susp. Read Array Ers. Susp Read Array Ers. Susp Read Array Ers. Susp Read Array
Botch Ers. Susp.(command seq. error) Botch (command seq. error Erase (busy) Program Setup Ers. Susp. Program Setup Ers. Susp. Program Setup Ers. Susp. Program Setup Ers. Susp. Program Setup Write to Buffer Setup Ers. Susp. Write to Buffer Setup Ers. Susp Write to Buffer Setup Ers. Susp Write to Buffer Setup Ers. Susp Write to Buffer Setup Read Status Ers. Susp. Read Array Ers. Susp. Read Array Ers. Susp Read Array Ers. Susp BEFP Setup Read Array Ers. Susp. Read Array Ers. Susp Read Array Ers. Susp Read Array Ers. Susp Erase Setup
Program (busy) Ers. Susp.
Botch Ers. Susp.(command seq. error) Botch (command seq. error)
Erase (busy)
Read Array Ers. Susp. Read Array Ers. Susp. Read Array Ers. Susp. Read Array Ers. Susp.
Erase (busy)
Read Status Ers. Susp. Read Status Ers. Susp. Read Status Ers. Susp. Read Status Ers. Susp. Read Status
Array
Erase (busy)
Config
Erase (busy)
CFI Status
Erase (busy)
Read Array
Status
If second cycle is 0x00 or 0x01 or 0x02 or 0x03, then reconfigure the STS functionality and go to Read Status; If not Botch.
Status
If second cycle is 0x00 or 0x01 or 0x02 or 0x03, then reconfigure the STS functionality and go to Read Status Ers. Susp; If not Botch Ers. Susp. If second cycle is 0x00 or 0x01 or 0x02 or 0x03, then reconfigure the STS functionality and go to Read Status Prog.Susp; If not Botch Prog. Susp. If second cycle is 0x00 or 0x01 or 0x02 or 0x03, then reconfigure the STS functionality and go to Read Status Both Susp; If not Botch Both Susp.
Status
Status
Datasheet
61
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 25. Next State Table Part B
Command Input and Next State Current State SR7 SR0 Data When Read
Array Status Config CFI Status Status
Read Status 0x70
Read Status Read Status Read Status Read Status
Clear Status4 0x50
Read Array Read Array Read Array Read Array
Read Config 0x90
Read Config Read Config Read Config Read Config
STS Reconfig 0xB8
STS Reconfig Setup STS Reconfig Setup STS Reconfig Setup STS Reconfig Setup
Read Query 0x98
Read Query Read Query Read Query Read Query
Lock Setup 0x60
Lock Setup Lock Setup Lock Setup Lock Setup
OTP/Prot Program Setup 0xC0
OTP/Prot Prog. Setup OTP/Prot Prog. Setup OTP/Prot Prog. Setup OTP/Prot Prog. Setup
Illegal Commands
Read Array Read Array Read Array Read Array
Read Array Read Status Read Config Read Query Lock Setup6 Lock Setup Erase Susp6 Botch (command seq. error)9 Botch Erase Susp.(command seq. error)9 Botch Prog. Susp.(command seq. error)9 Botch Both Susp.8 OTP/Prot. Prog. Setup OTP/Prot Prog. (busy) OTP.Prot Prog. (done) Prog. Setup Prog. Setup Ers. Susp. Program (busy) Program (busy) Ers. Susp. Read Status Prog. Susp. Read Array Prog. Susp. Read Config Prog. Susp. Read Query Prog. Susp. Program (done) Read Status Both Susp.8 Read Array Both Susp.8 Read Config Both Susp.8 Read Query Both Susp.8 BEFP Setup BEFP Setuptime BEFP Load
1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0
Botch(command seq.error) if second cycle is anything other than 0xD0, 0x01, 0x2F, or 0x03 Botch Erase Susp.(command seq. error) if second cycle is anything other than 0xD0, 0x01, 0x2F, or 0x03
Status
Read Status
Read Array
Read Config
STS Reconfig Setup STS Reconfig Setup Ers.Susp.
Read Query
Lock Setup
OTP/Prot Prog. Setup
Read Array
Status
Read Status Ers. Susp.
Read Array Ers. Susp.
Read Config Ers. Susp.
Read Query Ers. Susp.
Lock Setup Ers. Susp.
Read Array Ers. Susp.
Read Array
1 1 1 0 1 1 1 0 0 1 1 1 1 1 1 1 1 1 1 0 0
0 0 0 z 0 0 0 z z 0 0 0 0 0 0 0 0 0 0 1 0
Status
Read Status Prog. Susp.
Read Array Prog. Susp.
Read Config Prog Susp.
STS Reconfig Setup Prog Susp. STS Reconfig Setup Both Susp.
Read Query Prog. Susp.
Read Array Prog. Susp
Read Array Prog Susp.
Status
Read Status Both Susp.
Read Array Both Susp.
Read Config Both Susp.
Read Query Both Susp.
Read Array Both Susp.
Read Array Both Susp.
Status
OTP/Protection Register Program OTP/Protection Register Program (busy) STS Reconfig Setup
OTP/Prot Register Program
Status
OTP/Prot Register Program (busy)
Status Status Status Status Status
Read Status
Read Array
Read Config
Read Query
Lock Setup
OTP/Prot Prog. Setup
Read Array
Program (busy) Program (busy) Ers. Susp. Program (busy) Program (busy) Ers. Susp. STS Reconfig Setup Prog. Susp. STS Reconfig Setup Prog. Susp. STS Reconfig Setup Prog. Susp. STS Reconfig Setup Prog. Susp. STS Reconfig Setup STS Reconfig Setup Both Susp. STS Reconfig Setup Both Susp. STS Reconfig Setup Both Susp. STS Reconfig Setup Both Susp.
Status
Read Status Prog. Susp. Read Status Prog. Susp. Read Status Prog. Susp. Read Status Prog. Susp.
Read Array Prog Susp. Read Array Prog Susp. Read Array Prog Susp. Read Array Prog Susp. Read Array Read Array Both Susp. Read Array Both Susp. Read Array Both Susp. Read Array Both Susp.
Read Config Prog. Susp. Read Config Prog. Susp. Read Config Prog. Susp. Read Config Prog. Susp. Read Config Read Config Both Susp. Read Config Both Susp. Read Config Both Susp. Read Config Both Susp.
Read Query Prog Susp. Read Query Prog Susp. Read Query Prog Susp. Read Query Prog Susp. Read Query Read Query Both Susp. Read Query Both Susp. Read Query Both Susp. Read Query Both Susp.
Read Array Prog. Susp.
Read Array Prog. Susp. Read Array Prog. Susp. Read Array Prog. Susp. Read Array Prog. Susp. Read Array Read Array Both Susp. Read Array Both Susp. Read Array Both Susp. Read Array Both Susp.
Array
Read Array Prog. Susp.
Config
Read Array Prog. Susp.
CFI
Read Array Prog. Susp.
Status Status
Read Status Read Status Both Susp. Read Status Both Susp. Read Status Both Susp. Read Status Both Susp.
Lock Setup
Prot. Prog. Setup
Read Array Both Susp
Array
Read Array Both Susp
Config
Read Array Both Susp
CFI Status Status
Read Array Both Susp
Botch (command sequence error) If Time-out> 5us, go to BEFP Load; If Time-out<5us, stay in BEFP Setup-time Initialize buffer load count to 31; if buffer count=0, then go to BEFP (busy); For buffer count>0 and same block addr. stay in BEFP Load; If block addr. changed, go to BEFP exit
Status
62
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 25. Next State Table Part B
Command Input and Next State Current State SR7 SR0 Data When Read
Status Status Status Read Status
Read Status 0x70
Clear Status4 0x50
Read Config 0x90
STS Reconfig 0xB8
Read Query 0x98
Lock Setup 0x60
OTP/Prot Program Setup 0xC0
Illegal Commands
BEFP (busy) BEFP Exit (Busy) BEFP Exit Write to Buffer setup Count Load Data Load Write to Buffer Confirm Write to Buffer setup Ers. Susp. Count Load Ers. Susp. Data Load Ers. Susp. Write to Buffer confirm Ers. Susp. Erase Setup Erase (busy) Read Status Ers. Susp. Read Array Ers. Susp. Read Config Ers. Susp. Read Query Ers. Susp. Erase (done) STS Reconfig Setup STS Reconfig Setup Ers. Susp. STS Reconfig Setup Prog. Susp. STS Reconfig Setup Both Susp. NOTES:
1. 2. 3. 4. 5. 6. 7. 8. 9.
0 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1
1 1 0 0 0 0 0 0 0 0 0 0 z 0 0 0 0 0 0 0 0
To exit, change block addr; to continue proceed to BEFP after SR0=0. Internally timed; Go to BEFP Exit after internal timeout; Transition indicated by SR0=0 Read Array Read Config STS Reconfig Setup Read Query Lock Setup Prot. Prog. Setup Read Array
Status Status Status Status
Repeat command until SR7=1. Next cycle will be interpreted as Count Load. Word count load (Actual number of words-1). Lowest five bits will be assumed as the count. Device assumes next cycles will be Data Load. Data load; To quit or abort, change the block address during a write. The UI will botch on a block change. Repeat Data Load until Word Count is reached, next command must be Write to Buffer Confirm Botch (command sequence error)
Status
Repeat command until SR7=1. Next cycle will be interpreted as Count Load Ers. Susp..
Status
Word count load (Actual number of words-1). Lowest five bits will be assumed as the count. Device assumes next cycles will be Data Load Ers. Susp.. Data load; To quit or abort, change the block address during a write. The UI will botch on a block change. Repeat Data Load until Word Count is reached, next command must be Write to Buffer Confirm Ers. Susp.
Status
Status
Botch Ers. Susp. (command sequence error)
Status Status Status Read Status Ers. Susp. Read Status Ers. Susp. Read Status Ers. Susp. Read Status Ers. Susp. Read Status Read Array Ers. Susp. Read Array Ers. Susp. Read Array Ers. Susp. Read Array Ers. Susp. Read Array Read Config Ers. Susp. Read Config Ers. Susp. Read Config Ers. Susp. Read Config Ers. Susp. Read Config
Botch (command sequence error) Erase (busy) STS Reconfig Setup Ers. Susp. STS Reconfig Setup Ers. Susp. STS Reconfig Setup Ers. Susp. STS Reconfig Setup Ers. Susp. STS Reconfig Setup Read Query Ers. Susp. Read Query Ers. Susp. Read Query Ers. Susp. Read Query Ers. Susp. Read Query Lock Setup Ers. Susp. Lock Setup Ers. Susp. Lock Setup Ers. Susp. Lock Setup Ers. Susp. Lock Setup Read Array Ers. Susp. Read Array Ers. Susp. Read Array Ers. Susp. Read Array Ers. Susp. Prot. Prog. Setup Read Array Ers. Susp. Read Array Ers. Susp. Read Array Ers. Susp. Read Array Ers. Susp. Read Array
Array
Config
CFI Status
Status
If second cycle is 0x00 or 0x01 or 0x02 or 0x03, then reconfigure the STS functionality and go to Read Status; If not Botch.
Status
If second cycle is 0x00 or 0x01 or 0x02 or 0x03, then reconfigure the STS functionality and go to Read Status Ers. Susp; If not Botch Ers. Susp.
Status
If second cycle is 0x00 or 0x01 or 0x02 or 0x03, then reconfigure the STS functionality and go to Read Status Prog.Susp; If not Botch Prog. Susp.
1
0
Status
If second cycle is 0x00 or 0x01 or 0x02 or 0x03, then reconfigure the STS functionality and go to Read Status Both Susp; If not Botch Both Susp.
For BEFP, the block address should be changed only when the buffer is full. Start address is the address loaded during the Count Load cycle. The Write to Buffer command is invalid when a botch has occurred. The status register should be cleared before issuing the Write to Buffer command. A Clear Status Register command is allowed during erase or program suspend. When a suspend command is issued while the device is busy (program or erase), the device will not enter suspend until the appropriate suspend latency has elapsed. Any additional commands issued during this latency interval will cause indeterminate results. When the lock/write RCR operation is complete, the device returns to Read Status mode. If the Lock Setup command is issued during Erase Suspend, the device will revert to Read Status Ers. Susp. The Confirm command (0xD0) is interpreted as the second cycle of a two-cycle command while a Resume command 0xD0 is interpreted as a stand-alone, single-cycle command. The device will not resume from suspend when the command sequence 0x20, 0xD0 is issued while in suspend state. Both Suspend indicates a Program Suspend nested within an Erase Suspend. A Botch state is indicated when status bits SR4 and SR5 are set, and is the result of an invalid command sequence. The Clear Status Register command (0x50)must be issued to continue.
Datasheet
63
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Appendix B Common Flash Interface
B.1 Query Structure Overview
The Query command causes the flash component to display the Common Flash Interface (CFI) Query structure or "database." The structure sub-sections and address locations are summarized below. For further details see AP-646 Common Flash Interface (CFI) and Command Sets (Order No 292204) for a full description of CFI.
Table 26. Query Structure(1)
Offset 00000h 00001h (BA+2)h(2) 000(04 -0F)h 00010h 0001Bh 00027h P(3) Block Status Register Reserved CFI Query Identification String System Interface Information Device Geometry Definition Primary Intel-Specific Extended Query Table 0089 Sub-Section Name Description Manufacturer Code Device Code Block-specific information Reserved for vendor-specific information Command set ID and vendor data offset Device timing & voltage information Flash device layout Vendor-defined additional information specific to the Primary Vendor Algorithm
NOTES: 1. Refer to the Query Structure Output section and offset 28h for the detailed definition of offset address as a function of device bus width and mode. 2. BA = The beginning location of a Block Address (e.g., 010000h is the beginning location of block 1 when the block size is 64 Kword). 3. Offset 15 defines "P" which points to the Primary Intel-specific Extended Query Table.
B.2
CFI Query Identification String
The Identification String provides verification that the component supports the Common Flash Interface specification. It also indicates the specification version and supported vendor-specified command set(s).
64
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 27. CFI Identification
Offset 10h Length 3 Description Query-unique ASCII string "QRY" Addr. 10 11: 12: 13h 2 Primary vendor command set and control interface ID code. 16-bit ID code for vendor-specified algorithms 15h 2 Extended Query Table primary algorithm address 13: 14: 15: 16: 17h 2 Alternate vendor command set and control interface ID code 0000h means no second vendor-specified algorithm exists 19h 2 Secondary algorithm Extended Query Table address. 0000h means none exists 17: 18: 19: 1A: Hex Code --51 --52 --59 --01 --00 --31 --00 --00 --00 --00 --00 Value "Q" "R" "Y"
B.3
System Interface Information
The following tables give information on the power supplies and the program and erase time details as output by the device when the system software requests System Interface Information. The values stored are available from an offset address of 1Bh.
Table 28. System Interface Information
Offset Length Description VCC logic supply minimum program/erase voltage bits 0-3 BCD 100 mV bits 4-7 BCD volts VCC logic supply maximum program/erase voltage bits 0-3 BCD 100 mV bits 4-7 BCD volts VPP [programming] supply minimum program/erase voltage bits 0-3 BCD 100 mV bits 4-7 HEX volts VPP [programming] supply maximum program/erase voltage bits 0-3 BCD 100 mV bits 4-7 HEX volts "n" such that typical single word program time-out = 2n s "n" such that typical buffer write time-out = 2 s "n" such that typical block erase time-out = 2 ms "n" such that typical full chip erase time-out = 2 ms "n" such that maximum word program time-out = 2n times typical "n" such that maximum buffer write time-out = 2n times typical "n" such that maximum block erase time-out = 2 times typical "n" such that maximum chip erase time-out = 2 times typical
n n n n n
Addr.
Hex Code --27
Value
1Bh
1
1B:
2.7 V
1Ch
1
1C:
--36
3.6 V
1Dh
1
1D:
--00
0.0 V
1Eh 1Fh 20h 21h 22h 23h 24h 25h 26h
1 1 1 1 1 1 1 1 1
1E: 1F: 20: 21: 22: 23: 24: 25: 26:
--00 --08 --09 --0A --00 --01 --01 --02 --00
0.0 V 256 s 512 s 1s n/a 512 s 1024 s 4s NA
Datasheet
65
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
B.4
Device Geometry Definition
The following tables give critical details provided by CFI when the software requests flash device geometry information such as the size of the device, types of read interfaces, program buffer size etc.,
Table 29. Device Geometry Definition
Offset 27h Length 1 Description "n" such that the device size = 2 in number of bytes Flash Device Interface Code assignments: 28: 29: --01 --00
n
Address 27:
Hex Value
Meaning
See Table Below
28h
2
--
15
--
14
--
13
--
12
x64
11
x32
10
x16
9
x8
8
x16
--
--
--
--
--
--
--
--
2Ah
2
"n" such that maximum number of bytes in write buffer=2n Number of Erase Blocks Within the Device: 1. x=0 means no erase blocking; the device erases in "bulk" 2. x specifies the number of device or partition regions with one or more contiguous samesize erase blocks 3. Array size = (total blocks) x (individual blocks size) Erase Block Region Information bits 0-15=y, y+1 = number of identical-size erase blocks bits 16-31=z, region erase block(s) size are z x 256 bytes
2A: 2B:
--06 --00
64
2Ch
1
--01
1
2D: See Table Below 2E: 2F: 30: 00 02
2Dh
4
Table 46a. No of Erase blocks and Erase block region information
Address 27 h 2D h 2E h 64 Mbit 17h 3Fh 00h 128 Mbit 18h 7Fh 00h 256 Mbit) 19h FFh 00h
66
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
B.5
Primary Vendor Specific Extended Query Table
Certain flash features and commands are optional. The Primary Vendor Specific Extended Query Table specifies this and other similar information.
Table 30. Primary Vendor Specific Extended Query Table
Offset(1) P=31h (P+0)h (P+1)h (P+2)h (P+3)h (P+4)h 1 1 Major version number, ASCII Minor version number, ASCII 3 Primary Extended Query Table Unique ASCII String "PRI" Length Description (Optional Flash Features and Commands) Add 31: 32: 33: 34: 35: 36: Optional feature and command support(1=yes, 0=no) bits 11-31 are reserved; undefined bits are "0". If bit 31 is "1" then another 31 bit field of optional features follows at the end of the 30-bit field. bit 0 - Chip Erase Supported bit 1 - Suspend Erase Supported 4 bit 2 -Suspend Program Supported bit 3 - Legacy lock/unlock Supported bit 4 - Queued Erase Supported bit 5 - Instant Individual Block Locking Supported bit 6 - Protection Bits Supported bit 7 - Page-mode read supported bit 8 - Synchronous Read Supported bit 9 - Simultaneous Operations Supported bit 10 - Feature space Supported 37: 38: 39: Hex Code --50 --52 --49 --31 --31 --E6 --01 --00 --00 No Yes Yes No No Yes Yes Yes Yes No No 01 Value "P" "R" "I" "1" "1"
bit 0 = 0 bit 1 = 1 bit 2 = 1 bit3 = 0 bit 4 = 0 bit 5= 1 bit 6= 1 bit 7= 1 bit 8 = 1 bit 9 = 0 bit 10 =0
(P+5)h (P+6)h (P+7)h (P+8)h
Supported Functions After Suspend: Read Array, Status, Query (P+9)h 1 Other Supported Operations are: bits 1-7 reserved; undefined bits are "0" bit 0 Program supported after erase suspend
3A:
--01
bit 0=1
Yes
Datasheet
67
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 30. Primary Vendor Specific Extended Query Table
Offset(1) P=31h Length Description (Optional Flash Features and Commands) Block Status Register Mask (P+A)h (P+B)h 2 bits 3 -15 are reserved; undefined bits are "0" bit 0 Block Lock-bit status register bit active bit 1 Block Lock down bit status active bit 2 Unlock down bit Vcc logic supply highest performance program/ erase voltage (P+C)h 1 bits 0-3 BCD value in 100mV bits 4-7 BCD value in Volts Vpp optimum program/erase supply voltage bits 0-3 BCD value in 100mV bits 4-7 Hex value in Volts 3D: --33 3.3 Add 3B: 3C: Hex Code --07 --00 Yes Yes Value
bit 0 = 1 bit 1 = 1
(P+D)h
1
3E:
--00
--0.0V
Table 31. Protection Register Information
Offset(1) P=31h
(P+E)h
Length
1
Description(Optional Flash Features and Commands)
Number of Protection register fields in JEDEC ID space. "00h", indicates that 256 protection fields are available Protection field 1: Protection description This field describes user-available One Time Programmable(OTP) protection register bytes. Some are preprogrammed with device-unique serial numbers. Others are user-programmable. Bits 0-15 point to the protection register lock byte, the section's first byte. The following bytes are factory pre-programmed and user-programmable bits 0-7 = Lock/bytes JEDEC-plane physical low address bits 8-15 =Lock/bytes JEDEC-plane physical high address bits 16-23 = "n" such that 2n = factory pre-programmed bytes bits 24-31 = "n" such that 2n = user-programmable bytes Protection field 2: Protection description Bits 0-31 = point to the protection register physical Lockword address in the Jedec-plane. Following bytes are factory or user-programmable Bits 32-39 ="n"-factory pgm'd groups(low byte) Bits 40-47="n"-factory pgm'd groups(high byte) bits 48-55 ="n" such that 2n=factory programmable bytes per group bits 56-63="n"-user pgm'd groups(low byte) bits 64-71="n"-user pgm'd groups(high byte) bits 72-79="n" such that 2n = user programmable bytes/ group
Add
3F:
Hex Code
--02
Value
02
(P+F)h, (P+10)h, (P+11)h, (P+12)h
4
40: 41: 42: 43:
--80 --00 --03 --03
80h 00h 8 bytes 8 bytes
(P+13)h, (P+14)h, (P+15)h, (P+16)h, (P+17)h, (P+18)h, (P+19)h, (P+1A)h, (P+1B)h, (P+1C)h
10
44: 45: 46: 47: 48: 49: 4A: 4B: 4C: 4D:
--89 --00 --00 --00 --00 --00 --00 --10 --00 --04
89h 00h 00h 00h 0 0 0 16 0 16
NOTE:
The variable P is a pointer which is defines at CFI offset 15h.
68
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Table 32. Burst/Page Read Information
Offset(1) P=31h Length Description(Optional Flash Features and Commands) Page Mode Read Capability (P+1D)h 1 bits 0-7="n" such that 2n HEX value represents the number of read page bytes. See offset 28h for device word width to determine page mode data output width. 00h indicates no read page buffer. Number of synchronous mode read configuration fields that follow. 00h indicates no burst capability Synchronous Mode Read Capability Configuration 1 Bits 3-7 = Reserved bits 0-2 = "n" such that 2n+1 HEX value represents the maximum number of continuous synchronous burst reads when the device is configured for its maximum word width. A value of 07h indicates that the device is capable of continuous linear bursts until that will output data until the internal burst counter reaches the end of the device's burstable address space. This field's 3-bit value can be written directly to the Read Configuration Register Bits 0-2 if the device is configured for its maximum word width. See offset 28h for word width to determine the burst data output width. Synchronous Mode Read Capability Configuration 2 4E: --04 16 bytes Add Hex Code Value
(P+1E)h
1
4F:
--02
2
(P+1F)h
1
50:
--02
8
(P+20)h
1
51:
--03
16
Datasheet
69
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Appendix C Flowcharts
Figure 25. Write to Buffer Flowchart
Bus Operation Write
Start
Command Write to Buffer
Comments Data = 0xE8 Addr = Block Address XSR.7 = Valid Addr = Block Address Check XSR.7 1 = Write Buffer available 0 = No Write Buffer available Data = N = W ord Count N = 0 corresponds to count = 1 Addr = Block Address Data = Write Buffer Data Addr = Start Address Data = Write Buffer Data Addr = Block Address
Device Supports Buffer Writes? Yes Set Time-out or Loop Counter Get Next Target Address Issue Write to Buffer Command 0xE8 and Block Address Read Extended Status Register (at Block Address)
No
Use Single Word Programming
Read
Standby
Write (Notes 1, 2) Write (Notes 3, 4) Write (Notes 5, 6) Write Write Confirm
Data = 0xD0 Addr = Block Address Status register Data Transition to V IL of either CE# or OE# updates SR Addr = Block Address Check SR.7 1 = WSM Ready 0 = WSM Busy
Read
No Is Buffer Available? XSR.7 = 1 = Yes Write Word Count, Block Address Write Buffer Data, Start Address X=0 X=X+1 Write Buffer Data, Block Address No X = N? Yes Write Confirm 0xD0 and Block Address No Abort Write to Buffer? Yes Write to another Block Address Write to Buffer Aborted 0 = No Time-out or Count Expired?
Standby
Yes
1. Word count values on DQ 7-DQ0 are loaded into the Count register. Count ranges for this device are N = 0x00 to 0x1F. 2. The device outputs the status register when read (XSR is no longer available). 3. Write Buffer contents will be programmed at the device start address or destination flash address. 4. Align the start address on a Write Buffer boundary for maximum programming performance (i.e., A 5-A1 of the start address = 0). 5. The device aborts the Write to Buffer command if the current address is outside the original block address. 6. The Status register indicates an "improper command sequence" if the Write to Buffer command is aborted. Follow this with a Clear Status Register command. Full status check can be done after all erase and write sequences complete. Write 0xFF after the last operation to reset the device to read array mode.
Yes
Another Write to Buffer? No Read Status Register
Issue Read Status Register Command 0
SR.7 = ? 1 Full Status Check if Desired Programming Complete
70
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 26. Word Programming Flowchart
WORD PROGRAM PROCEDURE
Start
Bus Operation
Command W ord Program Setup
Comments Data = 0x40 Addr = Location to Program Data = Data to Program Addr = Location to Program Status Register Data. Toggle CE# or OE# to Update Status Register Data Check SR.7 1 = WSM Ready 0 = WSM Busy
Write 0x40, Address Write Data and Address
Write
Write
Data
Read
Read Status Register No SR.7 =? 1 Full Status Check if Desired 0 Suspend Program
Suspend Program Loop Yes
Standby
Repeat for subsequent programming operations. SR full status check can be done after each program or after a sequence of program operations. Write 0xFF after the last program operation to read array mode.
Program Complete FULL STATUS CHECK PROCEDURE Read Status Register Data (See Above) 1
Bus Operation Standby Command Comments Check SR.3 1 = VPEN Error Detect Check SR.4 1 = Data Program Error Check SR.1 1 = Attempted Program to Locked Block - Program aborted
SR.3 = 0 SR.4 = 0 SR.1 = 0 Program Successful
VPEN Range Error
Standby
1
Standby
Program Error
SR.3 MUST be cleared before further attempts are allowed by the W rite State Machine If set during a program attempt
1
Device Protect Error
SR.4, SR.3 and SR.1 are only cleared by the Clear Staus Register command in cases where multiple locations are programmed before full status is checked. If an error is detected, clear the status register before attempting retry or other error recovery.
Datasheet
71
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 27. Program Suspend/Resume Flowchart
Start
Bus Operation Write
Command Program Suspend
Comments Data = 0xB0 Addr = X Status Register Data; Toggle CE# or OE# to Update Status Register Data Addr = X Check SR.7 1 = WSM Ready 0 = WSM Busy Check SR.2 1 = Program Suspended 0 = Program Completed
Write 0xB0
Read
Read Status Register
Standby
SR.7 = 1 SR.2 = 1 Write 0xFF
0
Standby
0
Program Completed
Write
Read Array
Data = 0xFF Addr = X Read array data from block other than the one being programmed.
Read Program Resume
Write
Data = 0xD0 Addr = X
Read Array Data
Done Reading Yes Write 0xD0
No
Write 0xFF
Program Resumed
Read Array Data
72
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 28. Buffered Enhanced Factory Programming Procedure Flowchart
BEFP Setup
Start
BEFP Program & Verify
Read Status Register
BEFP Exit
Read Status Register
Unlock Block
SR.0=1=N
Data Stream Ready? SR.0=0=Y
SR.7=0=N
BEFP Exited? SR.7=1=Y Full Status Check Procedure
Write 80h Address = WA0
Initialize count X=0
Write D0h Address = WA0
Write Data Address = WA0
Program Complete
BEFP Setup time
Increment count X = X+1
Read Status Register
N
Check X = 32? Y
BEFP Setup Done?
SR.7=0=Y
Check VPEN & Lock errors (SR.3, SR.1)
SR.0=1=N
SR.7=1=N
Read Status Register
Program Done? SR.0=0=Y
Exit N Last Data? Y Write FFFFh Address = other block BEFP Setup Bus State Write Write (note 1) Write Read (note 2) Standby BEFP Setup Done? Unlock Block BEFP Setup BEFP Confirm Comments Unlock block Data = 80h Address = WA0 Data = D0h Address = WA0 Status Register Address = WA0 Check SR.7 0 = BEFP ready 1 = BEFP not ready Bus State Read BEFP Program & Verify Comments Status Register Address = WA0 Check SR.0 0 = Ready for data 1= Not ready for data Bus State Read BEFP Exit Comments Status Register Address = WA0 Check SR.7 0 = Exit not Completed 1 = Exit Completed
Data Standby Stream Ready? Initialize Standby X=0 Count Write (note 3) Standby Standby Read Inc. Count Buffer Full? Buffer Full?
Standby
Repeat for subsequent blocks. After BEFP exit, a Full Status Check can determine if any program error occurred. See the Full Status Check procedure in the Word Program flowchart. Write FFh to enter read array mode.
Data = word to program Address = WA0 X = X+1 X = 32? If yes, read SR.0 If no, load next data word
If SR.7 = 1: Error Check SR.3, SR.1 Standby Condition SR.3 = 1 = VPEN error Check SR.1 = 1 = locked block NOTES: 1. WA0 = first word address to be programmed within the target block. WA0 must align on a write buffer boundary. 2. The status register is updated when a system read toggles OE# low-high-low. 3. Write buffer contents are programmed sequentially to the flash array starting at WA0. The WSM internally increments addressing.
Status Register Address = WA0 Check SR.0 Program 0 = Program done Standby Done? 1 = Program in progress Standby Last Data? No = Fill Buffer again Yes = Exit the Program & Verify phase
Write
Exit X = 32? Program If yes, read SR.0 & Verify If no, load next data word Phase
Datasheet
73
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 29. Block Erase Flowchart
Start
Bus Operation
Command
Comments Data = 0x20 Addr = Within Block to Be Erased Data = 0xD0 Addr = Within Block to Be Erased Status Register Data Toggle CE# or OE# to Update Status Register Data Check SR.7 1 = WSM Ready 0 = WSM Busy
Write 0x20 Block Address Write 0xD0 and Block Address Read Status Register No SR.7 = 1 Full Status Check if Desired 0 Suspend Erase Yes Suspend Erase Loop
Write
Erase Setup
Write
Erase Confirm
Read
Standby Repeat for subsequent block erasures.
Full Status Check can be done after each block erase or after a sequence of block erasures. W rite FFH after the last write operation to reset device to read array mode.
Block Erase Complete FULL STATUS CHECK PROCEDURE Read Status Register Data (See Above) 1
Bus Operation Standby Command Comments Check SR.3 1 = VPEN Low Detect Check SR.4,5 Both 1 = Command Sequence Error Check SR.5 1 = Block Erase Error Check SR.1 1 = Attempted Erase of Locked Block - Erase Aborted
SR.3 = 0 SR.4,5 = 0 SR.5 = 0 SR.1 = 0 Block Erase Successful
VPEN Range Error
Standby
1
Command Sequence Error
Standby
Standby
1
Block Erase Error
SR. 1 and 3 MUST be cleared, if set during an erase attempt, before further attempts are allowed by the Write State Machine. SR.1, 3, 4, 5 are only cleared by the Clear Staus Register Command, in cases where multiple blocks are erased before full status is checked. If an error is detected, clear the status register before attempting retry or other error recovery.
1
Attempted Erase of Locked Block - Aborted
74
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 30. Erase Suspend/Resume Flowchart
ERASE SUSPEND/RESUME PROCEDURE
Start
Bus Operation Write
Command Erase Suspend
Comments Data = 0xB0 Addr =Block to Suspend (BA) Status Register Data Toggle CE# or OE# to Update Status Register Data Addr = Suspended Block (BA) Check SR.7 1 = WSM Ready 0 = WSM Busy Check SR.6 1 = Erase Suspended 0 = Erase Completed
Write 0xB0
Read
Write 0x70
Standby
Read Status Register
Standby
SR.7 = 1 SR.6 = 1 Read Read Array Data Read or Write? No Done? Yes Write 0xD0
0
Write Read or Write
Read Array or Program
Data = Read or Write Addr = Write or Read Address Read array or program data from/to block other than the one being erased.
0
Erase Completed
Write Erase Resume
Data = 0xD0 Addr = Suspended Block (BA)
Program Program Loop
Write 0xFF
Erase Resumed
Read Array Data
Datasheet
75
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 31. Protection Register Programming Flowchart
Start
Bus Operation
Command Protection Program Setup Protection Program
Comments
Write 0xC0 (Protection Reg. Program Setup) Write Protect. Register Address/Data
W rite W rite
Data = 0xC0 Data = Data to Program Addr = Location to Program Status Register Data Toggle CE# or OE# to Update Status Register Data Check SR.7 1 = WSM Ready 0 = WSM Busy
Read
Standby
Read Status Register
SR.7 = 1? Yes Full Status Check if Desired Program Complete
No
Protection Program operations can only be addressed within the protection register address space. Addresses outside the defined space will return an error. Repeat for subsequent programming operations. SR Full Status Check can be done after each program or after a sequence of program operations. W rite FFH after the last program operation to reset device to read array mode.
FULL STATUS CHECK PROCEDURE Read Status Register Data (See Above) 1,1
Bus Operation Standby Command Comments SR.1 SR.3 SR.4 0 1 1 VPEN Low 0 0 1 Prot. Reg. Prog. Error Register Locked: Aborted
SR.3, SR.4 =
VPEN Range Error
Standby
SR.1, SR.4 =
0,1
Protection Register Programming Error Locked-Register Program Attempt Aborted
Standby
1
0
1
SR.3 MUST be cleared, if set during a program attempt, before further attempts are allowed by the Write State Machine. SR.1, SR.3 and SR.4 are only cleared by the Clear Staus Register Command, in cases of multiple protection register program operations before full status is checked. If an error is detected, clear the status register before attempting retry or other error recovery.
SR.1, SR.4 =
1,1
Program Successful
76
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Figure 32. Block Lock Operations Flowchart
LOCKING OPERATIONS PROCEDURE
Start
Lock Setup
Bus Command Operation Write Lock Setup
Comments Data = 60h Addr = Block to lock/unlock/lock-down (BA) 01h (Lock block) D0h (Unlock block) 2Fh (Lockdown block) Block to lock/unlock/lock-down (BA)
Write 60h Block Address
Lock Confirm
Write 01,D0,2Fh Block Address
Read ID Plane
Write
Lock, Data = Unlock, or Lockdown Confirm Addr = Read ID Plane
Write 90h Optional
Write (Optional)
Data = 90h Addr = Block address offset +2 (BA+2)
Read Block Lock Status
Read Block Lock Block Lock status data (Optional) Status Addr = Block address offset +2 (BA+2) Standby (Optional) Read Array Confirm locking change on DQ 1, DQ 0. (See Block Locking State Transitions Table for valid combinations.) Data = FFh Addr = Block address (BA)
Locking Change?
Yes Read Array
No
Write
Write FFh Partition Address Lock Change Complete
LOCK_OP.WMF
Datasheet
77
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Appendix D Additional Information
Order Number
(R)
Document Tool
Intel StrataFlash Synchronous Memory (K3/K18) 256-, 128-, 64-Mbit Specification Update Intel Persistent Storage Manager User's Guide AP-689 Using Intel Persistent Storage Manager AP-677 Intel StrataFlash Memory Technology AP-644 Designing Intel StrataFlash Memory into Intel Architecture AP-663 Using the Intel StrataFlash Memory Write Buffer AP-646 Common Flash Interface (CFI) and Command Sets AP-644 Migration Guide to 5 Volt Intel StrataFlash Memory Intel Flash Memory Chip Scale Package User's Guide
(R) (R) (R) (R) (R) (R) (R) (R)
298636 298136 292237 297859 292222 292221 292204 292202 298161
NOTES: 1. Please call the Intel Literature Center at (800) 548-4725 to request Intel documentation. International customers should contact their local Intel or distribution sales office. 2. Visit Intel's World Wide Web home page at http://www.intel.com for technical documentation and tools. 3. For the most current information on Intel StrataFlash memory, visit our website at http:// developer.intel.com/design/flash/isf.
78
Datasheet
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
Appendix E Ordering Information
RC 28F 128 K 18 C 115
Package Designator, Extended Temperature (-40C to +85C) GE = 0.75 mm VF BGA RC = Easy BGA PC = 64-ball PB-free Easy BGA Access Speed (ns) 64 Mbit = 110 128 Mbit = 115 256 Mbit = 120 Process Identifier C = 0.18um Voltage Identifer (V CC / V CCQ) 3 = 2.7 - 3.6V / 2.375 - 3.6V 18 = 2.7 - 3.6V / 1.65-1.95V Product Family K = 3 Volt Synchronous Intel StrataFlash(R) Memory
Product line designator for all Intel(R) Flash Products Density 640 = 64 Mbit (8-MB x16) 128 = 128 Mbit (16-MB x16) 256 = 256 Mbit (32-MB x16)
Table 33. Valid Combinations
Density 64 Mbit 128 Mbit 256 Mbit VF BGA GE28F640K3C110 GE28F640K18C110 GE28F128K3C115 GE28F128K18C115 GE28F256K3C120 GE28F256K18C120 Easy BGA RC28F640K3C110 RC28F640K18C110 RC28F128K3C115 RC28F128K18C115 RC28F256K3C120 RC28F256K18C120 Lead-free Easy BGA Not Available PC 28F128K3C115 (144 PC Tray) Not Available
Datasheet
79
28F640K3, 28F640K18, 28F128K3, 28F128K18, 28F256K3, 28F256K18
80
Datasheet

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