AT49BV020-12TI Datasheet

IC型號(hào)：
AT49BV020-12TI
PDF描述：
2-Megabit 256K x 8 Single 2.7-volt Battery-Voltage Flash Mem...
文件大?。?/label>
171.13KB
PDF頁數(shù)：
10頁
芯片廠家：
ATMEL

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Features

鈥?/div>

Single Supply Voltage, Range 2.7V to 3.6V

Single Supply for Read and Write

Fast Read Access Time - 70 ns

Internal Program Control and Timer

8K bytes Boot Block With Lockout

Fast Erase Cycle Time - 10 seconds

Byte By Byte Programming - 30

碌

s/Byte typical

Hardware Data Protection

DATA Polling For End Of Program Detection

Low Power Dissipation

鈥?25 mA Active Current

鈥?50

碌

A CMOS Standby Current

鈥?/div>

Typical 10,000 Write Cycles

Description

The AT49BV020 and the AT49LV020 are 3-volt-only, 2 megabit Flash memories

organized as 262,144 words of 8 bits each. Manufactured with Atmel's advanced non-

volatile CMOS technology, the devices offer access times to 70 ns with power dissipa-

tion of just 90 mW over the commercial temperature range. When the device is dese-

lected, the CMOS standby current is less than 50

碌A(chǔ).

To allow for simple in-system reprogrammability, the AT49BV/LV020 does not require

high input voltages for programming. Three-volt-only commands determine the read

and programming operation of the device. Reading data out of the device is similar to

reading from an EPROM. Reprogramming the AT49BV/LV020 is performed by eras-

ing the entire 2 megabits of memory and then programming on a byte by byte basis.

The typical byte programming time is a fast 30

碌s.

The end of a program cycle can be

optionally detected by the DATA polling feature. Once the end of a byte program cycle

has been detected, a new access for a read or program can begin. The typical num-

ber of program and erase cycles is in excess of 10,000 cycles.

(continued)

2-Megabit

(256K x 8)

Single 2.7-volt

Battery-Voltage

鈩?/div>

Flash Memory

AT49BV020

AT49LV020

Pin Configuration

Pin Name

A0 - A17

I/O0 - I/O7

Function

Addresses

Chip Enable

Output Enable

Write Enable

Data Inputs/Outputs

No Connect

PLCC Top View

VSOP Top View (8 x 14mm) or

TSOP Top View (8 x 20mm)

Type 1

Rev. 0678C鈥?3/98

型號(hào)

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AT49BV020-12TI Datasheet

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