AT28HC64B ATMEL Corporation, AT28HC64B Datasheet

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AT28HC64B

Manufacturer Part Number
AT28HC64B
Description
64K 8K x 8 High Speed CMOS E2PROM with Page Write and Software Data Protection
Manufacturer
ATMEL Corporation
Datasheet

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Pin Configurations
Features
Description
The AT28HC64B is a high-performance electrically erasable and programmable read
only memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits.
Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers
access times to 55 ns with power dissipation of just 220 mW. When the device is
deselected, the CMOS standby current is less than 100 A.
The AT28HC64B 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 Name
A0 - A12
CE
OE
WE
I/O0 - I/O7
NC
DC
Fast Read Access Time - 55 ns
Automatic Page Write Operation
Fast Write Cycle Times
Low Power Dissipation
Hardware and Software Data Protection
DATA Polling and Toggle Bit for End of Write Detection
High Reliability CMOS Technology
Single 5V
CMOS and TTL Compatible Inputs and Outputs
JEDEC Approved Byte-Wide Pinout
Commercial and Industrial Temperature Ranges
Internal Address and Data Latches for 64-Bytes
Page Write Cycle Time: 10 ms Maximum
1 to 64-Byte Page Write Operation
40 mA Active Current
100 A CMOS Standby Current
Endurance: 100,000 Cycles
Data Retention: 10 Years
PDIP, SOIC
Top View
10% Supply
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
Don’t Connect
Note: PLCC package pins 1 and
17 are DON’T CONNECT.
Top View
Top View
PLCC
TSOP
(continued)
AT28HC64B
AT28HC64B
64K (8K x 8)
High Speed
CMOS
E
Page Write and
Software Data
Protection
2
PROM with
2-267
0274D

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AT28HC64B Summary of contents

Page 1

... When the device is deselected, the CMOS standby current is less than 100 A. The AT28HC64B 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

... Voltage on OE and A9 with Respect to Ground ................... -0.6V to +13.5V AT28HC64B 2-268 Atmel’s AT28HC64B has additional features to ensure high quality and manufacturability. The device utilizes in- ternal error correction for extended endurance and im- proved data retention. An optional software data protec- tion mechanism is available to guard against inadvertent writes ...

Page 3

... WC ing operation. PAGE WRITE AT28HC64B 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; after the first byte is written, it can then be fol- lowed additional bytes ...

Page 4

... MHz OUT -400 A OH AT28HC64B-90 AT28HC64B-120 0°C - 70°C 0°C - 70°C -40°C - 85°C -40°C - 85°C 5V 10% 5V 10 OUT High High Z ...

Page 5

... Input Test Waveforms and Measurement Level < 5ns R F Pin Capacitance ( MHz 25° OUT Note: 1. This parameter is characterized and is not 100% tested. AT28HC64B-55 AT28HC64B-70 AT28HC64B-90 AT28HC64B-120 Min Max Min Max ...

Page 6

... Address Hold Time AH t Chip Select Set-up Time CS t Chip Select Hold Time CH t Write Pulse Width ( Data Set-up Time Data, OE Hold Time DH OEH AC Write Waveforms WE Controlled CE Controlled AT28HC64B 2-272 Min Max Units 100 ...

Page 7

... Notes through A12 must specify the same page address during each high to low transition of WE (or CE must be high only when WE and CE are both low. Chip Erase Waveforms sec (min msec (min 12.0V 0.5V H Min 100 50 (1, 2) AT28HC64B Max Units 150 s ns 2-273 ...

Page 8

... Software Protected Write Cycle Waveforms Notes 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. AT28HC64B 2-274 Software Data (1) ...

Page 9

... Beginning and ending state of I/O6 will vary. (1) Min See AC Read Characteristics. (1) Min 10 10 (2) 150 0 2. See AC Read Characteristics. 3. Any address location may be used, but the address should not vary. AT28HC64B Typ Max Typ Max Units Units 2-275 ...

Page 10

... AT28HC64B 2-276 ...

Page 11

... AT28HC64B-70SC AT28HC64B-70TC AT28HC64B-70JI AT28HC64B-70PI 28P6 AT28HC64B-70SI 28S AT28HC64B-70TI AT28HC64B-90JC AT28HC64B-90PC 28P6 AT28HC64B-90SC AT28HC64B-90TC AT28HC64B-90JI AT28HC64B-90PI 28P6 AT28HC64B-90SI 28S AT28HC64B-90TI AT28HC64B-12JC AT28HC64B-12PC 28P6 AT28HC64B-12SC AT28HC64B-12TC AT28HC64B-12JI AT28HC64B-12PI 28P6 AT28HC64B-12SI 28S AT28HC64B-12TI AT28HC64B Operation Range 32J Commercial ( 28S 32J Commercial ( ...

Page 12

... 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) AT28HC64B 2-278 Package and Temperature Combinations PC, SC JI, PC, PI, SC, SI, TC, TI JI, PC, PI, SC, SI, TC, TI ...

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