at28lv64b-20tc ATMEL Corporation, at28lv64b-20tc Datasheet

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at28lv64b-20tc

Manufacturer Part Number
at28lv64b-20tc
Description
64k 8k X 8 Low Voltage Cmos E2 Prom With Page Write And Software Data Protection
Manufacturer
ATMEL Corporation
Datasheet

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AT28LV64B-20TC
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IR
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6 942
Features
Description
The AT28LV64B is a high-performance electrically erasable programmable read only
memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits. Manu-
factured with Atmel’s advanced nonvolatile CMOS technology, the device offers ac-
cess times to 200 ns with power dissipation of just 54 mW. When the device is dese-
lected, the CMOS standby current is less than 20 A.
The AT28LV64B is accessed like a static RAM for the read or write cycle without the
need for external components. The device contains a 64-byte page register to allow
Pin Configurations
Pin Name
A0 - A12
CE
OE
WE
I/O0 - I/O7
NC
DC
Single 3.3V
3-Volt-Only Read and Write Operation
Software-Protected Programming
Low Power Dissipation
Fast Read Access Time 200 ns
Automatic Page Write Operation
Fast Write Cycle Times
DATA Polling for End of Write Detection
High Reliability CMOS Technology
JEDEC Approved Byte-Wide Pinout
Commercial and Industrial Temperature Ranges
Note: PLCC package pins 1 and
17 are DON’T CONNECT.
15 mA Active Current
20 A CMOS Standby Current
Internal Address and Data Latches for 64-Bytes
Internal Control Timer
Page Write Cycle Time: 10 ms Maximum
1 to 64-Byte Page Write Operation
Endurance: 10,000 Cycles
Data Retention: 10 Years
Top View
PLCC
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
Don’t Connect
10% Supply
PDIP, SOIC
Top View
Top View
TSOP
(continued)
AT28LV64B
AT28LV64B
64K (8K x 8)
Low Voltage
CMOS
E
Page Write and
Software Data
Protection
2
PROM with
2-135
0299C

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at28lv64b-20tc Summary of contents

Page 1

... When the device is dese- lected, the CMOS standby current is less than 20 A. The AT28LV64B is accessed like a static RAM for the read or write cycle without the need for external components. The device contains a 64-byte page register to allow ...

Page 2

... Respect to Ground ................... -0.6V to +6.25V All Output Voltages with Respect to Ground .............-0. Voltage on OE and A9 with Respect to Ground ................... -0.6V to +13.5V AT28LV64B 2-136 Atmel’s 28LV64B has additional features to ensure high quality and manufacturability. The device utilizes internal error correction for extended endurance and improved data retention characteristics ...

Page 3

... WC ing operation. PAGE WRITE AT28LV64B allows 1 to 64-bytes of data to be written into the device during a single internal programming period. A page write operation is initiated in the same manner as a byte write; the first byte written can then be followed additional bytes ...

Page 4

... 12.0V H Condition I 0. MHz OUT -100 A OH AT28LV64B-25 0°C - 70°C -40°C - 85°C 3.3V 10 OUT High High Z V High Z IL 0.5V. Min Max Units 10 10 Com ...

Page 5

... ACC after the falling 4. This parameter is characterized and is not 100% tested ACC OE . ACC Output Test Load (1) Typ Max AT28LV64B AT28LV64B-25 Max Min Max 200 250 200 250 80 0 100 Units Conditions ...

Page 6

... Data, OE Hold Time DH OEH t Time to Data Valid DV t Write Pulse Width High WPH Notes Restriction. 2. All byte write operations must be preceded by the SDP command sequence. AC Write Waveforms WE Controlled CE Controlled AT28LV64B 2-140 Min Max Units 0 ns 100 200 ns ...

Page 7

... ENTER DATA PROTECT STATE 2. A6 through A12 must specify the same page address during each high to low transition of WE (or CE) after the software code has been entered must be high only when WE and CE are both low. AT28LV64B Min Max 10 0 100 ...

Page 8

... OEHP t Write Recovery Time WR Notes: 1. These parameters are characterized and not 100% tested. Toggle Bit Waveforms Notes: 1. Toggling either both OE and CE will operate toggle bit. 2. Beginning and ending state of I/O6 will vary. AT28LV64B 2-142 (1) Min See AC Read Characteristics. ...

Page 9

... Lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 28S 28 Lead, 0.300" Wide, Plastic Gull Wing Small Outline (SOIC) 28T 28 Lead, Plastic Thin Small Outline Package (TSOP) Ordering Code AT28LV64B-20JC AT28LV64B-20PC AT28LV64B-20SC AT28LV64B-20TC AT28LV64B-20JI AT28LV64B-20PI AT28LV64B-20SI AT28LV64B-20TI AT28LV64B-25JC AT28LV64B-25PC AT28LV64B-25SC AT28LV64B-25TC AT28LV64B-25JI ...

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