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AT28HC256 Datasheet(PDF) 1 Page - ATMEL Corporation

Part # AT28HC256
Description  256 32K x 8 High Speed Parallel EEPROMs
Download  12 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT28HC256 Datasheet(HTML) 1 Page - ATMEL Corporation

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AT28HC256
256 (32K x 8)
High Speed
CMOS
E
2PROM
Features
Fast Read Access Time - 70 ns
Automatic Page Write Operation
Internal Address and Data Latches for 64-Bytes
Internal Control Timer
Fast Write Cycle Times
Page Write Cycle Time: 3 ms or 10 ms Maximum
1 to 64-Byte Page Write Operation
Low Power Dissipation
80 mA Active Current
3 mA Standby Current
Hardware and Software Data Protection
DATA Polling for End of Write Detection
High Reliability CMOS Technology
Endurance: 10
4 or 105 Cycles
Data Retention: 10 Years
Single 5V ± 10% Supply
CMOS and TTL Compatible Inputs and Outputs
JEDEC Approved Byte-Wide Pinout
Full Military, Commercial, and Industrial Temperature Ranges
Description
The AT28HC256 is a high-performance Electrically Erasable and Programmable
Read Only Memory. Its 256K of memory is organized as 32,768 words by 8 bits.
Manufactured with Atmel’s advanced nonvolatile CMOS technology, the AT28HC256
offers access times to 70 ns with power dissipation of just 440 mW. When the
AT28HC256 is deselected, the standby current is less than 5 mA.
(continued)
Note: PLCC package pins 1 and
17 are DON’T CONNECT.
CERDIP, PDIP,
FLATPACK
Top View
LCC, PLCC
Top View
Pin Name
Function
A0 - A14
Addresses
CE
Chip Enable
OE
Output Enable
WE
Write Enable
I/O0 - I/O7
Data Inputs/Outputs
NC
No Connect
DC
Don’t Connect
Pin Configurations
TSOP
Top View
PGA
Top View
0007F
AT28HC256
2-279


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