AT49F4096A-55TC

更新时间： 2024-09-20 22:56:39

品牌	Logo	应用领域
爱特美尔 - ATMEL		闪存
页数	文件大小	规格书
15页	246K
描述
4-Megabit 512K x 8/ 256K x 16 CMOS Flash Memory

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中文翻译

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数据手册

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AT49F4096A-55TC 数据手册

Features

• Single Voltage Operation

– 5V Read

– 5V Programming

• Fast Read Access Time - 55 ns

• Internal Erase/Program Control

• Sector Architecture

– One 8K Words (16K bytes) Boot Block with Programming Lockout

– Two 4K Words (8K bytes) Parameter Blocks

– One 240K Words (480K bytes) Main Memory Array Block

• Fast Sector Erase Time - 10 seconds

• Byte-by-Byte or Word-By-Word Programming - 10 µs Typical

• Hardware Data Protection

• DATA Polling For End Of Program Detection

• Low-Power Dissipation

– 50 mA Active Current

– 300 µA CMOS Standby Current

• Typical 10,000 Write Cycles

4-Megabit

(512K x 8/

256K x 16)

CMOS Flash

Memory

Description

The AT49F004(T) and AT49F4096A(T) are 5-volt, 4-megabit Flash Memories orga-

nized as 524,288 words of 8 bits each or 256K words of 16 bits each. Manufactured

with Atmel’s advanced nonvolatile CMOS technology, the devices offer access times

to 55 ns with power dissipation of just 275 mW. When deselected, the CMOS standby

current is less than 300 µA.

AT49F004

AT49F004T

AT49F4096A

AT49F4096AT

Preliminary

The device contains a user-enabled “boot block” protection feature. Two versions of

the feature are available: the AT49F004/4096A locates the boot block at lowest order

addresses (“bottom boot”); the AT49F004T/4096AT locates it at highest order

addresses (“top boot”).

To allow for simple in-system reprogrammability, the AT49F004(T)/4096A(T) does not

require high input voltages for programming. Reading data out of the device is similar

to reading from an EPROM; it has standard CE, OE, and WE inputs to avoid bus con-

tention. Reprogramming the AT49F004(T)/4096A(T) is performed by first erasing a

(continued)

Pin Configurations

Pin Name

A0 - A18

Function

Addresses

Chip Enable

Output Enable

Write Enable

Reset

RESET

RDY/BUSY

Ready/Busy Output

I/O0 - I/O14 Data Inputs/Outputs

I/O15 (Data Input/Output, Word Mode)

I/O15(A-1)

A-1 (LSB Address Input, Byte Mode)

Selects Byte or Word Mode

No Connect

BYTE

Rev. 1167A–09/98

12 3 4 5 6 7...15

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