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MOSEL VITELIC
V62C31864 2.7 VOLT 8K X 8 STATIC RAM
PRELIMINARY
Features
s High-speed: 35, 70 ns s Ultra low DC operating current of 2mA (Max.) s Low Power Dissipation: - TTL Standby: 1 mA (Max.) - CMOS Standby: 10 mA (Max.) s Fully static operation s All inputs and outputs directly compatible s Three state outputs s Ultra low data retention current (VCC = 2V) s Extended operating voltage: 2.7V-3.6V
s Packages - 28-pin TSOP (Standard) - 28-pin 300 mil SOP (450 mil pin-to-pin)
Description
The V62C31864 is a 65,536-bit static random access memory organized as 8,192 words by 8 bits. It is built with MOSEL VITELIC's high performance CMOS process. Inputs and threestate outputs are TTL compatible and allow for direct interfacing with common system bus structures.
Functional Block Diagram
A0 Row Decoder 512 x 128 Memory Array VCC GND
A8
I/O0 Input Data Circuit I/O7 A9 CE2 CE1 OE WE
Column I/O Column Decoder
A12
Control Circuit
31864 01
Device Usage Chart
Operating Temperature Range 0C to 70 C -40C to +85C Package Outline T * * F * * Access Time (ns) 35 * * 70 * L * Power LL * * Temperature Mark Blank I
V62C31864 Rev. 1.6 August 1998
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Pin Descriptions
A0-A12 Address Inputs These 13 address inputs select one of the 8,192 x 8 bit segments in the RAM. CE1, CE2 Chip Enable Inputs CE1 is active LOW and CE2 is active HIGH. Both chip enables must be active to read from or write to the device. If either chip enable is not active, the device is deselected and is in a standby power mode. The I/O pins will be in the high-impedance state when deselected. Output Enable Input OE The Output Enable input is active LOW. When OE is LOW with CE1 LOW, CE2 HIGH, and WE HIGH, data of the selected memory location will be available on the I/O pins. When OE is HIGH, the I/O pins will be in the high impedance state.
V62C31864
WE Write Enable Input An active LOW input, WE input controls read and write operations. When CE1 and WE inputs are both LOW with CE2 HIGH, the data present on the I/O pins will be written into the selected memory location. I/O0-I/O7 Data Input and Data Output Ports These 8 bidirectional ports are used to read data from and write data into the RAM. VCC GND Power Supply Ground
Pin Configurations (Top View) 28-Pin SOP
NC A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15
51864 02
28-Pin TSOP (Standard)
VCC WE CE2 A8 A9 A11 OE A10 CE1 I/O7 I/O6 I/O5 I/O4 I/O3
OE A11 A9 A8 CE2 WE VCC NC A12 A7 A6 A5 A4 A3
22 23 24 25 26 27 28 1 2 3 4 5 6 7 21 20 19 18 17 16 15 14 13 12 11 10 9 8
51864 03
A10 CE1 I/O7 I/O6 I/O5 I/O4 I/O3 GND I/O2 I/O1 I/O0 A0 A1 A2
V62C31864 Rev. 1.6 August 1998
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MOSEL VITELIC
Part Number Information
V
MOSEL-VITELIC MANUFACTURED
V62C31864
62
C
31
8
64
-
TEMP.
SRAM FAMILY
OPERATING VOLTAGE
DENSITY 64K
SPEED
PKG
BLANK = 0C to 70C I = -40C to +85C
62 = ASYNCHRONOUS, SLOW C = CMOS PROCESS 31 = 2.7V - 3.6V
F = 330 mil SOP T = TSOP standard ORGANIZATION 8 = 8-bit L = LOW POWER LL =DOUBLE LOW POWER
31864 05
PWR.
35 ns 70 ns
Absolute Maximum Ratings (1)
Symbol
VCC VN VDQ TBIAS TSTG
Parameter
Supply Voltage Input Voltage Input/Output Voltage Applied Temperature Under Bias Storage Temperature
Commercial
-0.5 to VCC+0.5 -0.5 to VCC+0.5 VCC + 0.3 -10 to +125 -55 to +125
Industrial
-0.5 to VCC+0.5 -0.5 to VCC+0.5 VCC + 0.3 -65 to +135 -65 to +150
Units
V V V C C
NOTE: 1. Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Capacitance*
TA = 25C, f = 1.0MHz
Symbol CIN COUT Parameter Input Capacitance Output Capacitance Conditions VIN = 0V VI/O = 0V Max. 6 8 Unit pF pF
Truth Table
Mode
Standby Standby Output Disable Read Write
CE1
H X L L L
CE2
X L H H H
OE
X X H L X
WE
X X H H L
I/O Operation
High Z High Z High Z DOUT DIN
NOTE: * This parameter is guaranteed and not tested.
NOTE: X = Don't Care, L = LOW, H = HIGH
V62C31864 Rev. 1.6 August 1998
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DC Electrical Characteristics (over all temperature ranges, VCC = 2.7V - 3.6V)
Symbol
VCC VIL VIH IIL IOL VOL VOH
V62C31864
Parameter
Power Supply Voltage Input LOW Voltage(1,2) Input HIGH Voltage(1) Input Leakage Current Output Leakage Current Output LOW Voltage Output HIGH Voltage
Test Conditions
Min.
2.7 -0.3 2.2
Typ.
-- -- -- -- -- -- --
Max.
3.6 0.4 VCC+0.3 2 2 0.4 --
Units
V V V mA mA V V
VCC = Max, VIN = 0V to VCC VCC = Max, CE = VIH, VOUT = 0V to VCC VCC = Min, IOL = 2.1mA VCC = Min, IOH = -1mA
-2 -2 -- 2.4
Symbol
ICC ICC1 ISB
Parameter
Operating Power Supply Current, CE1 = VIL, CE2 = VIH, Output Open, VCC = Max., f = 0 Average Operating Current, CE1 = VIL, CE2 = VIH, Output Open, VCC = Max., f = fMAX(3) TTL Standby Current CE1 VIH, CE2 VIL, VCC = Max. CMOS Standby Current, CE1 VCC - 0.2V, CE2 0.2V, VIN VCC - 0.2V or VIN 0.2V, VCC = Max. L LL L LL
Com.(4) Ind.(4)
2 40 2 1 40 10 2 40 3 1 50 15
Units
mA mA mA
ISB1
mA
NOTES: 1. These are absolute values with respect to device ground and all overshoots due to system or tester noise are included. 2. VIL (Min.) = -3.0V for pulse width < 20ns. 3. fMAX = 1/tRC. 4. Maximum values.
AC Test Conditions
Input Pulse Levels Input Rise and Fall Times Timing Reference Levels Output Load 0 to 3V 5 ns 1.5V see below
Key to Switching Waveforms
WAVEFORM INPUTS MUST BE STEADY MAY CHANGE FROM H TO L OUTPUTS WILL BE STEADY WILL BE CHANGING FROM H TO L WILL BE CHANGING FROM L TO H CHANGING: STATE UNKNOWN CENTER LINE IS HIGH IMPEDANCE "OFF" STATE
AC Test Loads and Waveforms
+3V 1103 1/2 I/O Pins 1554 1/2 CL = 30 pF*
MAY CHANGE FROM L TO H
DON'T CARE: ANY CHANGE PERMITTED DOES NOT APPLY
* Includes scope and jig capacitance
51864 06
V62C31864 Rev. 1.6 August 1998
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MOSEL VITELIC
Data Retention Characteristics
Symbol
VDR ICCDR
V62C31864
Parameter
VCC for Data Retention CE1 VCC - 0.2V, CE2 0.2V, VIN VCC - 0.2V, or VIN 0.2V Com'l L LL Ind. L LL
Min.
2.0
Typ.(2)
--
Max.
3.6
Units
V mA
Data Retention Current CE1 VDR - 0.2V, CE2 0.2V, VIN VCC - 0.2V, or VIN 0.2V
-- -- -- -- 0 tRC(1)
0.5 0.5 -- -- -- --
40 10 45 15 -- --
tCDR tR
Chip Deselect to Data Retention Time Operation Recovery Time (see Retention Waveform)
ns ns
NOTES: 1. tRC = Read Cycle Time 2. TA = +25C.
Low VCC Data Retention Waveform (1) (CE1 Controlled)
Data Retention Mode VCC 2.7V tCDR CE1 2.2V CE1 VCC - 0.2V VDR 2V tR 2.2V
31864 14
2.7V
Low VCC Data Retention Waveform (2) (CE2 Controlled)
Data Retention Mode VCC 2.7V tCDR CE2 2.2V CE2 0.2V VDR 2V tR 2.2V
31864 15
2.7V
V62C31864 Rev. 1.6 August 1998
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MOSEL VITELIC
AC Electrical Characteristics
(over all temperature ranges, VCC = 2.7V - 3.6V) Read Cycle
Parameter Name
tRC tAA tACS1 tACS2 tOE tCLZ1 tCLZ2 tOLZ tCHZ tOHZ tOH
V62C31864
-35 Parameter
Read Cycle Time Address Access Time Chip Enable Access Time Chip Enable Access Time Output Enable to Output Valid Chip Enable to Output in Low Z Chip Enable to Output in Low Z Output Enable to Output in Low Z Chip Disable to Output in High Z Output Disable to Output in High Z Output Hold from Address Change
-70 Max.
-- 35 35 35 15 -- -- -- 20 20 --
Min.
35 -- -- -- -- 5 5 5 0 0 5
Min.
70 -- -- -- -- 5 5 5 0 0 5
Max.
-- 70 70 70 30 -- -- -- 20 20 --
Unit
ns ns ns ns ns ns ns ns ns ns ns
Write Cycle
Parameter Name
tWC tCW1 tCW2 tAS tAW tWP tWR tWHZ tDW tDH tOW
-35 Parameter
Write Cycle Time Chip Enable to End of Write Chip Enable to End of Write Address Setup Time Address Valid to End of Write Write Pulse Width Write Recovery Time Write to Output High-Z Data Setup to End of Write Data Hold from End of Write Output Active from End of Write
-70 Max.
-- -- -- -- -- -- -- 20 -- -- --
Min.
35 35 35 0 35 25 0 0 25 0 5
Min.
70 70 70 0 70 50 0 0 30 0 5
Max.
-- -- -- -- -- -- -- 25 -- -- --
Unit
ns ns ns ns ns ns ns ns ns ns ns
V62C31864 Rev. 1.6 August 1998
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MOSEL VITELIC
Switching Waveforms (Read Cycle)
Read Cycle 1(1, 2)
tRC ADDRESS tAA OE tOE tOLZ I/O tOH tOHZ(5)
V62C31864
51864 11
Read Cycle 2(1, 2, 4)
tRC ADDRESS tAA tOH I/O
51864 09
tOH
Read Cycle 3(1, 3, 4)
ADDRESS
CE1 tACS1 CE2 tCLZ1 tACS2
(5)
tCHZ(5)
I/O
tCLZ2(5)
51864 10
NOTES: 1. WE = VIH. 2. CE1 = VIL and CE2 = VIH. 3. Address valid prior to or coincident with CE1 transition LOW and/or CE2 transition HIGH. 4. OE = VIL. 5. Transition is measured 500mV from steady state with CL = 5pF. This parameter is guaranteed and not 100% tested.
V62C31864 Rev. 1.6 August 1998
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MOSEL VITELIC
Switching Waveforms (Write Cycle)
Write Cycle 1 (WE Controlled)(4)
tWC ADDRESS tWR(2) tCW CE1 tAW CE2 tAS WE tWP(1) OUTPUT tWHZ INPUT tDW tDH tCW(6)
(6)
V62C31864
51864 12
Write Cycle 2 (CE Controlled)(4)
tWC ADDRESS tCW(6) CE1 tAW CE2 tAS WE High-Z tDW INPUT
51864 13
tWR(2)
(4)
tCW(6)
OUTPUT
tDH
(5)
NOTES: 1. The internal write time of the memory is defined by the overlap of CE1 and CE2 active and WE low. Both signals must be active to initiate and any one signal can terminate a write by going inactive. The data input setup and hold timing should be referenced to the second transition edge of the signal that terminates the write. 2. tWR is measured from the earlier of CE1 or WE going HIGH, or CE2 going LOW at the end of the write cycle. 3. During this period, I/O pins are in the output state so that the input signals of opposite phase to the outputs must not be applied. 4. OE = VIL or VIH. However it is recommended to keep OE at VIH during write cycle to avoid bus contention. 5. If CE1 is LOW and CE2 is HIGH during this period, I/O pins are in the output state. Then the data input signals of opposite phase to the outputs must not be applied to them. 6. tCW is measured from CE1 going LOW or CE2 going HIGH to the end of write.
V62C31864 Rev. 1.6 August 1998
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MOSEL VITELIC
Package Diagrams
28-pin 330 mil SOP
V62C31864
Units in inches [mm]
0 MIN (STAND OFF) 0.339 0.008 [8.61 0.203] 0.465 0.012 [11.81 0.305] 0.402 0.012 [10.21 0.203] 0.031 0.008 [0.787 0.203]
INDEX
0.713 [18.11] TYP
0.006 0.002 [0.152 0.051] 0.112 [0.285] MAX
"A" 0.098 0.005 [2.49 0.127] 0.018 0.004 [0.457 0.102] 0.008 [0.203] View "A" 0.050 [1.27] TYP
0.024 [0.610] 0.008 [0.203] MAX 0.027 [0.686] MAX
V62C31864 Rev. 1.6 August 1998
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MOSEL VITELIC
Package Diagrams (Cont'd)
28-Pin TSOP
Unit in inches [mm]
V62C31864
0.463 0.003 [11.76 0.076] 0.528 0.008 [13.41 0.203] 0.315 0.004 [8.00 0.102] 0.046 0.004 [1.17 0.102]
+0.007 0.020 -0.008 +0.178 0.508 -0.305
0.006 0.002 [0.152 0.051]
0.022 [0.559] BSC
0.006 0.004 [0.152 0.102]
V62C31864 Rev. 1.6 August 1998
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MOSEL VITELIC
Notes
V62C31864
V62C31864 Rev. 1.6 August 1998
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MOSEL VITELIC
U.S.A.
3910 NORTH FIRST STREET SAN JOSE, CA 95134 PHONE: 408-433-6000 FAX: 408-433-0185
WORLDWIDE OFFICES
TAIWAN
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V62C31864
GERMANY (CONTINENTAL EUROPE & ISRAEL )
71083 HERRENBERG BENZSTR. 32 GERMANY PHONE: +49 7032 2796-0 FAX: +49 7032 2796 22
JAPAN
WBG MARINE WEST 25F 6, NAKASE 2-CHOME MIHAMA-KU, CHIBA-SHI CHIBA 261-71 PHONE: 81-43-299-6000 FAX: 81-43-299-6555
HONG KONG
19 DAI FU STREET TAIPO INDUSTRIAL ESTATE TAIPO, NT, HONG KONG PHONE: 852-2665-4883 FAX: 852-2664-7535
IRELAND & UK
BLOCK A UNIT 2 BROOMFIELD BUSINESS PARK MALAHIDE CO. DUBLIN, IRELAND PHONE: +353 1 8038020 FAX: +353 1 8038049
U.S. SALES OFFICES
NORTHWESTERN
3910 NORTH FIRST STREET SAN JOSE, CA 95134 PHONE: 408-433-6000 FAX: 408-433-0185
SOUTHWESTERN
SUITE 200 5150 E. PACIFIC COAST HWY. LONG BEACH, CA 90804 PHONE: 562-498-3314 FAX: 562-597-2174
CENTRAL & SOUTHEASTERN
604 FIELDWOOD CIRCLE RICHARDSON, TX 75081 PHONE: 972-690-1402 FAX: 972-690-0341
NORTHEASTERN
SUITE 436 20 TRAFALGAR SQUARE NASHUA, NH 03063 PHONE: 603-889-4393 FAX: 603-889-9347
(c) Copyright 1997, MOSEL VITELIC Inc.
8/98 Printed in U.S.A.
The information in this document is subject to change without notice. MOSEL VITELIC makes no commitment to update or keep current the information contained in this document. No part of this document may be copied or reproduced in any form or by any means without the prior written consent of MOSEL-VITELIC.
MOSEL VITELIC subjects its products to normal quality control sampling techniques which are intended to provide an assurance of high quality products suitable for usual commercial applications. MOSEL VITELIC does not do testing appropriate to provide 100% product quality assurance and does not assume any liability for consequential or incidental arising from any use of its products. If such products are to be used in applications in which personal injury might occur from failure, purchaser must do its own quality assurance testing appropriate to such applications.
MOSEL VITELIC
3910 N. First Street, San Jose, CA 95134-1501 Ph: (408) 433-6000 Fax: (408) 433-0952 Tlx: 371-9461

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