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AT29C256-12PI fiches techniques PDF

ATMEL Corporation - 256K 32K x 8 5-volt Only CMOS Flash Memory

Numéro de référence AT29C256-12PI
Description 256K 32K x 8 5-volt Only CMOS Flash Memory
Fabricant ATMEL Corporation 
Logo ATMEL Corporation 





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AT29C256-12PI fiche technique
AT29C256
Features
Fast Read Access Time - 70 ns
5-Volt-Only Reprogramming
•• Page Program Operation
Single Cycle Reprogram (Erase and Program)
Internal Address and Data Latches for 64-Bytes
Internal Program Control and Timer
Hardware and Software Data Protection
•• Fast Program Cycle Times
Page (64-Byte) Program Time - 10 ms
Chip Erase Time - 10 ms
DATA Polling for End of Program Detection
•• Low Power Dissipation
50 mA Active Current
300 µA CMOS Standby Current
Typical Endurance > 10,000 Cycles
•• Single 5V ± 10% Supply
CMOS and TTL Compatible Inputs and Outputs
•• Commercial and Industrial Temperature Ranges
256K (32K x 8)
5-volt Only
CMOS Flash
Memory
Description
The AT29C256 is a 5-volt-only in-system Flash programmable and erasable read only
memory (PEROM). Its 256K of memory is organized as 32,768 words by 8 bits. Manu-
factured with Atmel’s advanced nonvolatile CMOS technology, the device offers ac-
cess times to 70 ns with power dissipation of just 275 mW. When the device is dese-
lected, the CMOS standby current is less than 300 µA. The device endurance is such
that any sector can typically be written to in excess of 10,000 times.
Pin Configurations
Pin Name Function
DIP Top View
(continued)
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
AT29C256
PLCC Top View
TSOP Top View
Type 1
Note: PLCC package pins 1 and 17
are DON’T CONNECT.
0046L
4-93

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