AT49F2048 データシートの表示（PDF） - Atmel Corporation

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AT49F2048

2-Megabit (128K x 16) 5-volt Only CMOS Flash Memory

Atmel Corporation 

Features

• Single Voltage Operation

– 5V Read

– 5V Reprogramming

• Fast Read Access Time - 70 ns

• Internal Erase/Program Control

• Sector Architecture

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

– Two 8K Words (16K bytes) Parameter Blocks

– One 104K Words (208K bytes) Main Memory Array Block

• Fast Sector Erase Time - 10 seconds

• Word-By-Word Programming - 50 µs/Word

• 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

Description

The AT49F2048 is a 5-volt-only, 2 megabit Flash Memory organized as 128K words

of 16 bits each. Manufactured with Atmel's advanced nonvolatile CMOS technology,

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

deselected, the CMOS standby current is less than 300 µA.

To allow for simple in-system reprogrammability, the AT49F2048 does not require

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

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

Pin Configurations

(continued)

Pin Name

Function

A0 - A16

Addresses

CE

Chip Enable

OE

Output Enable

WE

Write Enable

RESET

I/O0 - I/O15

NC

Reset

Data

Inputs/Outputs

No Connect

SOIC (SOP)

TSOP Top View

Type 1

2-Megabit

(128K x 16)

5-volt Only

CMOS Flash

Memory

AT49F2048

0568D-A–9/97

1

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