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Features
* Fast Read Access Time - 45 ns * Low-Power CMOS Operation
- 100 A Max Standby - 30 mA Max Active at 5 MHz JEDEC Standard Packages - 40-lead PDIP - 44-lead PLCC - 40-lead VSOP Direct Upgrade from 512K (AT27C516) EPROM 5V 10% Power Supply High-Reliability CMOS Technology - 2000V ESD Protection - 200 mA Latchup Immunity Rapid Programming Algorithm - 100 s/Word (Typical) CMOS and TTL Compatible Inputs and Outputs Integrated Product Identification Code Industrial and Automotive Temperature Ranges Green (Pb/Halide-free) Packaging Option
*
* * *
1-Megabit (64K x 16) OTP EPROM AT27C1024
* * * * *
1. Description
The AT27C1024 is a low-power, high-performance 1,048,576 bit one-time programmable read-only memory (OTP EPROM) organized 64K by 16 bits. It requires only one 5V power supply in normal read mode operation. Any word can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states. The by-16 organization make this part ideal for high-performance 16- and 32-bit microprocessor systems. In read mode, the AT27C1024 typically consumes 15 mA. Standby mode supply current is typically less than 10 A. The AT27C1024 is available in industry-standard JEDEC-approved one-time programmable (OTP) plastic PDIP, PLCC, and VSOP packages. The device features two-line control (CE, OE) to eliminate bus contention in high-speed systems. With high density 64K word storage capability, the AT27C1024 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media. Atmel's AT27C1024 have additional features to ensure high quality and efficient production use. The Rapid Programming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 s/word. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry-standard programming equipment to select the proper programming algorithms and voltages.
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2. Pin Configurations
Pin Name A0 - A15 O0 - O15 CE OE PGM NC Note: Both GND pins must be connected. Function Addresses Outputs Chip Enable Output Enable Program Strobe No Connect
2.1
40-lead PDIP Top View
VPP CE O15 O14 O13 O12 O11 O10 O9 O8 GND O7 O6 O5 O4 O3 O2 O1 O0 OE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VCC PGM NC A15 A14 A13 A12 A11 A10 A9 GND A8 A7 A6 A5 A4 A3 A2 A1 A0
2.3
44-lead PLCC Top View
O13 O14 O15 CE VPP NC VCC PGM NC A15 A14
2.2
40-lead VSOP Top View - Type 1
A9 A10 A11 A12 A13 A14 A15 NC PGM VCC VPP CE O15 O14 O13 O12 O11 O10 O9 O8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 GND A8 A7 A6 A5 A4 A3 A2 A1 A0 OE O0 O1 A2 O3 O4 O5 O6 O7 GND
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AT27C1024
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O3 O2 O1 O0 OE NC A0 A1 A2 A3 A4
18 19 20 21 22 23 24 25 26 27 28
O12 O11 O10 O9 O8 GND NC O7 O6 O5 O4
7 8 9 10 11 12 13 14 15 16 17
6 5 4 3 2 1 44 43 42 41 40
39 38 37 36 35 34 33 32 31 30 29
A13 A12 A11 A10 A9 GND NC A8 A7 A6 A5
AT27C1024
3. System Considerations
Switching between active and standby conditions via the Chip Enable pin may produce transient voltage excursions. Unless accommodated by the system design, these transients may exceed datasheet limits, resulting in device non-conformance. At a minimum, a 0.1 F high frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the VCC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7 F bulk electrolytic capacitor should be utilized, again connected between the VCC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array.
4. Block Diagram
5. Absolute Maximum Ratings*
Temperature Under Bias.............................. -55 C to + 125 C Storage Temperature ................................... -65 C to + 150 C Voltage on Any Pin with Respect to Ground ........................................-2.0V to + 7.0V(1) Voltage on A9 with Respect to Ground .....................................-2.0V to + 14.0V(1) VPP Supply Voltage with Respect to Ground ......................................-2.0V to + 14.0V(1) Note: 1. Minimum voltage is -0.6V DC which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is VCC + 0.75V DC which may overshoot to +7.0V for pulses of less than 20 ns. *NOTICE: Stresses beyond 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 beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
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6. Operating Modes
Mode/Pin Read Output Disable Standby Rapid Program(2) PGM Verify PGM Inhibit Product Identification(4) Notes: 1. X can be VIL or VIH. 2. Refer to Programming Characteristics. 3. VH = 12.0 0.5V. 4. Two identifier words may be selected. All Ai inputs are held low (VIL), except A9 which is set to VH and A0 which is toggled low (VIL) to select the Manufacturer's Identification word and high (VIH) to select the Device Code word. 5. Standby VCC current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in ISB. CE VIL X VIH VIL VIL VIH VIL OE VIL VIH X VIH VIL X VIL PGM X
(1)
Ai Ai X X Ai Ai X A9 = VH(3) A0 = VIH or VIL A1 - A15 = VIL
VPP X X X(5) VPP VPP VPP VCC
Outputs DOUT High Z High Z DIN DOUT High Z Identification Code
X X VIL VIH X X
7. DC and AC Operating Conditions for Read Operation
AT27C1024 -45 Operating Temp. (Case) VCC Power Supply Ind. Auto. 5V 10% 5V 10% -40 C - 85 C -70 -40 C - 85 C
8. DC and Operating Characteristics for Read Operation
Symbol ILI Parameter Input Load Current Condition Ind. VIN = 0V to VCC Auto. Ind. ILO IPP1 ISB ICC VIL VIH VOL VOH Notes:
(2)
Min
Max 1 5 5 10 10 100 1 30
Units A A A A A A mA mA V V V V
Output Leakage Current VPP(1)) Read/Standby Current
VOUT = 0V to VCC VPP = VCC
Auto.
VCC(1) Standby Current VCC Active Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage
ISB1 (CMOS), CE = VCC 0.3V ISB2 (TTL), CE = 2.0 to VCC + 0.5V f = 5 MHz, IOUT = 0 mA, CE = VIL -0.6 2.0 IOL = 2.1 mA IOH = -400 A 2.4
0.8 VCC + 0.5 0.4
1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP.. 2. VPP may be connected directly to VCC, except during programming. The supply current would then be the sum of ICC and IPP..
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AT27C1024
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AT27C1024
9. AC Characteristics for Read Operation
AT27C1024 -45 Symbol tACC(1) tCE(1) tOE(1) tDF(1) tOH Note: Parameter Address to Output Delay CE to Output Delay OE to Output Delay Condition CE = OE = VIL OE = VIL CE = VIL Min Max 45 45 20 20 7 7 Min -70 Max 70 70 25 25 Units ns ns ns ns ns
OE or CE High to Output Float, Whichever Occurred First Output Hold from Address, CE or OE, Whichever Occurred First 1. See AC Waveforms for Read Operation.
10. AC Waveforms for Read Operation(1)
Notes:
1. Timing measurement reference level is 1.5V for -45. Input AC drive levels are VIL = 0.0V and VIH = 3.0V. Timing measurement reference levels for all other speed grades are VOL = 0.8V and VOH = 2.0V. Input AC drive levels are VIL = 0.45V and VIH = 2.4V. 2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE. 3. OE may be delayed up to tACC - tOE after the address is valid without impact on tACC. 4. This parameter is only sampled and is not 100% tested. 5. Output float is defined as the point when data is no longer driven.
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11. Pin Capacitance
f = 1 MHz, T = 25C(1)
Symbol CIN COUT Note: Typ 4 8 Max 10 12 Units pF pF Conditions VIN = 0V VOUT = 0V
1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.
12. Input Test Waveforms and Measurement Levels
For -45 devices only:
tR, tF < 5 ns (10% to 90%) For -70 devices only:
tR, tF < 20 ns (10% to 90%)
13. Output Test Load
Note:
1. CL = 100 pF including jig capacitance except -45 devices, where CL = 30 pF.
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AT27C1024
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AT27C1024
14. Programming Waveforms(1)
Notes:
1. The Input Timing Reference is 0.8V for VIL and 2.0V for VIH. 2. tOE and tDFP are characteristics of the device but must be accommodated by the programmer. 3. When programming the AT27C1024 a 0.1 F capacitor is required across VPP and ground to suppress sputious voltage transients.
15. DC Programming Characteristics
TA = 25 5C, VCC = 6.5 0.25V, VPP = 13.0 0.25V
Limits Symbol ILI VIL VIH VOL VOH ICC2 IPP2 VID Parameter Input Load Current Input Low Level Input High Level Output Low Voltage Output High Voltage VCC Supply Current (Program and Verify) VPP Supply Current A9 Product Identification Voltage CE = PGM = VIL 11.5 IOL = 2.1 mA IOH = -400 A 2.4 50 30 12.5 Test Conditions VIN = VIL, VIH -0.6 2.0 Min Max 10 0.8 VCC + 0.1 0.4 Units A V V V V mA mA V
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16. AC Programming Characteristics
TA = 25 5 C, VCC = 6.5 0.25V, VPP = 13.0 0.25V
Limits Symbol tAS tCES tOES tDS tAH tDH tDFP tVPS tVCS tPW tOE tPRT Notes: Parameter Address Setup Time CE Setup Time OE Setup Time Data Setup Time Address Hold Time Data Hold Time OE High to Output Float Delay VPP Setup Time VCC Setup Time PGM Program Pulse Width Data Valid from OE VPP Pulse Rise Time During Programming
(3) (2)
Test Conditions(1)
Min 2 2
Max
Units s s s s s s
Input Rise and Fall Times (10% to 90%) 20 ns Input Pulse Levels 0.45V to 2.4V Input Timing Reference Level 0.8V to 2.0V Output Timing Reference Level 0.8V to 2.0V
2 2 0 2 0 2 2 95 105 150 50 130
ns s s s ns ns
1. VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP. 2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven - see timing diagram. 3. Program Pulse width tolerance is 100 sec 5%.
17. Atmel's AT27C1024 Integrated Product Identification Code
Pins Codes Manufacturer Device Type A0 0 1 O15-O8 0 0 O7 0 1 O6 0 1 O5 0 1 O4 1 1 O3 1 0 O2 1 0 O1 1 0 O0 0 1 Hex Data 001E 00F1
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AT27C1024
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AT27C1024
18. Rapid Programming Algorithm
A 100 s PGM pulse width is used to program. The address is set to the first location. VCC is raised to 6.5V and VPP is raised to 13.0V. Each address is first programmed with one 100 s PGM pulse without verification. Then a verification/reprogramming loop is executed for each address. In the event a word fails to pass verification, up to 10 successive 100 s pulses are applied with a verification after each pulse. If the word fails to verify after 10 pulses have been applied, the part is considered failed. After the word verifies properly, the next address is selected until all have been checked. VPP is then lowered to 5.0V and VCC to 5.0V. All words are read again and compared with the original data to determine if the device passes or fails.
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19. Ordering Information
19.1
tACC (ns) 45
Standard Package
ICC (mA) Active 30 Standby 0.1 Ordering Code AT27C1024-45JI AT27C1024-45PI AT27C1024-45VI AT27C1024-70JI AT27C1024-70PI AT27C1024-70VI Package 44J 40P6 40V(1) 44J 40P6 40V(1) Operation Range Industrial (-40 C to 85 C) Industrial (-40 C to 85 C)
70
30
0.1
Note:
Not recommended for new designs. Use Green package option.
19.2
tACC (ns) 45 70 Note:
Green Package (Pb/Halide-free)
ICC (mA) Active 30 30 Standby 0.1 0.1 Ordering Code AT27C1024-45JU AT27C1024-45PU AT27C1024-70JU AT27C1024-70PU Package 44J 40P6 44J 40P6 Operation Range Industrial (-40 C to 85 C) Industrial (-40 C to 85 C)
1. The 40-lead VSOP package is not recommended for new designs.
Package Type 44J 40P6 40V 44-Lead, Plastic J-Leaded Chip Carrier (PLCC) 40-Lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 40-Lead, Plastic Thin Small Outline Package (VSOP) 10 x 14 mm
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AT27C1024
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AT27C1024
20. Packaging Information
20.1 44J - PLCC
1.14(0.045) X 45
PIN NO. 1 IDENTIFIER
1.14(0.045) X 45 0.318(0.0125) 0.191(0.0075)
E1 B
E
B1
D2/E2
e D1 D A A2 A1
0.51(0.020)MAX 45 MAX (3X)
COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL A A1 A2 D D1 E Notes: 1. This package conforms to JEDEC reference MS-018, Variation AC. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is .010"(0.254 mm) per side. Dimension D1 and E1 include mold mismatch and are measured at the extreme material condition at the upper or lower parting line. 3. Lead coplanarity is 0.004" (0.102 mm) maximum. E1 D2/E2 B B1 e MIN 4.191 2.286 0.508 17.399 16.510 17.399 16.510 14.986 0.660 0.330 NOM - - - - - - - - - - 1.270 TYP MAX 4.572 3.048 - 17.653 16.662 17.653 16.662 16.002 0.813 0.533 Note 2 Note 2 NOTE
10/04/01 2325 Orchard Parkway San Jose, CA 95131 TITLE 44J, 44-lead, Plastic J-leaded Chip Carrier (PLCC) DRAWING NO. 44J REV. B
R
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20.2
40P6 - PDIP
D
PIN 1
E1
A
SEATING PLANE
L B1 e E B
A1
C eB
0 ~ 15
REF
SYMBOL A A1 D E E1 B
COMMON DIMENSIONS (Unit of Measure = mm) MIN - 0.381 52.070 15.240 13.462 0.356 1.041 3.048 0.203 15.494 NOM - - - - - - - - - - 2.540 TYP MAX 4.826 - 52.578 15.875 13.970 0.559 1.651 3.556 0.381 17.526 Note 2 Note 2 NOTE
Notes:
1. This package conforms to JEDEC reference MS-011, Variation AC. 2. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25 mm (0.010").
B1 L C eB e
09/28/01 2325 Orchard Parkway San Jose, CA 95131 TITLE 40P6, 40-lead (0.600"/15.24 mm Wide) Plastic Dual Inline Package (PDIP) DRAWING NO. 40P6 REV. B
R
12
AT27C1024
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AT27C1024
20.3 40V - VSOP
PIN 1
0 ~ 8
c
Pin 1 Identifier D1 D
L
e
b
L1
E
A2
A
SEATING PLANE
GAGE PLANE
A1
SYMBOL A A1 A2 Notes: 1. This package conforms to JEDEC reference MO-142, Variation CA. 2. Dimensions D1 and E do not include mold protrusion. Allowable protrusion on E is 0.15 mm per side and on D1 is 0.25 mm per side. 3. Lead coplanarity is 0.10 mm maximum. D D1 E L L1 b c e
COMMON DIMENSIONS (Unit of Measure = mm) MIN - 0.05 0.95 13.80 12.30 9.90 0.50 NOM - - 1.00 14.00 12.40 10.00 0.60 0.25 BASIC 0.17 0.10 0.22 - 0.50 BASIC 0.27 0.21 MAX 1.20 0.15 1.05 14.20 12.50 10.10 0.70 Note 2 Note 2 NOTE
10/18/01 2325 Orchard Parkway San Jose, CA 95131 TITLE 40V, 40-lead (10 x 14 mm Package) Plastic Thin Small Outline Package, Type I (VSOP) DRAWING NO. 40V REV. B
R
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International
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