Datasheet > 29C256

29C256

更新时间： 2022-11-25 16:15:55

品牌	Logo	应用领域
爱特美尔 - ATMEL		闪存
页数	文件大小	规格书
17页	344K
描述
256K 32K x 8 5-volt Only CMOS Flash Memory

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数据手册

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29C256 数据手册

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

256K (32K x 8)

5-volt Only

Flash Memory

• 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

AT29C256

Description

The AT29C256 is a five-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.

Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers

access times to 70 ns with power dissipation of just 275 mW. When the device is

deselected, 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.

TSOP Top View

Pin Configurations

Type 1

Pin Name

A0 - A14

Function

Addresses

A11

A10

Chip Enable

Output Enable

Write Enable

Data Inputs/Outputs

No Connect

I/O7

I/O6

I/O5

I/O4

I/O3

GND

I/O2

I/O1

I/O0

A13

A14

VCC

A12

I/O0 - I/O7

Don’t Connect

PLCC and LCC Top View

29 A8

28 A9

27 A11

26 NC

25 OE

24 A10

23 CE

22 I/O7

21 I/O6

A1 10

A0 11

NC 12

I/O0 13

Note:

PLCC package pins 1 and 17 are

DON’T CONNECT.

Rev. 0046P–FLASH–10/04

12 3 4 5 6 7...17

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