AT49F008A-90TI Datasheet

IC型號：
AT49F008A-90TI
PDF描述：
x8 Flash EEPROM
文件大?。?/label>
295.56KB
PDF頁數(shù)：
15頁
芯片廠家：
ETC

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Features

鈥?/div>

Single-voltage Operation

鈥?/div>

鈥?5V Read

鈥?5V Programming

Fast Read Access Time 鈥?90 ns

Internal Erase/Program Control

Sector Architecture

鈥?One 8K Word (16K Bytes) Boot Block with Programming Lockout

鈥?Two 4K Word (8K Bytes) Parameter Blocks

鈥?One 496K Word (992K Bytes) Main Memory Array Block

Fast Sector Erase Time 鈥?10 seconds

Byte-by-byte or Word-by-word Programming 鈥?10 碌s Typical

Hardware Data Protection

Data Polling for End of Program Detection

Low Power Dissipation

鈥?50 mA Active Current

鈥?100 碌A(chǔ) CMOS Standby Current

Typical 10,000 Write Cycles

鈥?/div>

8-megabit

(1M x 8/

512K x 16)

Flash Memory

AT49F008A

AT49F008AT

AT49F8192A

AT49F8192AT

Description

The AT49F008A(T) and AT49F8192A(T) are 5-volt, 8-megabit Flash memories orga-

nized as 1,048,576 words of 8 bits each or 512K words of 16 bits each. Manufactured

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

to 90 ns with power dissipation of just 275 mW. When deselected, the CMOS standby

current is less than 100 碌A(chǔ).

The device contains a user-enabled 鈥渂oot block鈥?protection feature. Two versions of

the feature are available: the AT49F008A/8192A locates the boot block at lowest

order addresses (鈥渂ottom boot鈥?; the AT49F008AT/8192AT locates it at highest order

addresses (鈥渢op boot鈥?.

To allow for simple in-system reprogrammability, the AT49F008A(T)/8192A(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 contention. Reprogramming the AT49F008A(T)/8192A(T) is performed by first

erasing a block of data and then programming on a byte-by-byte or word-by-word

basis.

(continued)

Pin Configurations

Pin Name

A0 - A18

RESET

RDY/BUSY

I/O0 - I/O14

I/O15 (A-1)

BYTE

Function

Addresses

Chip Enable

Output Enable

Write Enable

Reset

Ready/Busy Output

Data Inputs/Outputs

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

A-1 (LSB Address Input, Byte Mode)

Selects Byte or Word Mode

Rev. 1199F鈥?4/01

No Connect

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AT49F008A-90TI Datasheet

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