AT49F020-90JC ATMEL Corporation, AT49F020-90JC Datasheet

AT49F020-90JC

Manufacturer Part Number

AT49F020-90JC

Description

Manufacturer

ATMEL Corporation

Datasheets

1.AT49F020-90JC.pdf (12 pages)

2.AT49F020-90JC.pdf (10 pages)

Specifications of AT49F020-90JC

Case

SOJ

Date_code

06+

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

AT49F020-90JC

Manufacturer:

Quantity:

Company:

Meier Automation Equipment Co., Limited

Part Number:

AT49F020-90JC

Manufacturer:

ATMEL/爱特梅尔

Quantity:

20 000

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Features

•

Description

The AT49F020 is a 5-volt only in-system Flash Memory. Its 2 megabits of memory is

organized as 262,144 words by 8 bits. Manufactured with Atmel’s advanced nonvola-

tile CMOS technology, the device offers access times to 90 ns with power dissipation

of just 275 mW over the commercial temperature range. When the device is dese-

lected, the CMOS standby current is less than 100 A.

To allow for simple in-system reprogrammability, the AT49F020 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

reading from an EPROM. Reprogramming the AT49F020 is performed by erasing the

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

Pin Configurations

Pin Name

A0 - A17

I/O0 - I/O7

Single Voltage Operation

Fast Read Access Time - 90 ns

Internal Program Control and Timer

8K Bytes Boot Block With Lockout

Fast Erase Cycle Time - 10 seconds

Byte-By-Byte Programming - 50 µs/Byte

Hardware Data Protection

DATA Polling For End Of Program Detection

Low Power Dissipation

Typical 10,000 Write Cycles

VCC

– 5V Read

– 5V Reprogramming

– 50 mA Active Current

– 100 µA CMOS Standby Current

A11

A13

A14

A17

A16

A15

A12

TSOP Top View

Function

Addresses

Chip Enable

Output Enable

Write Enable

Data Inputs/Outputs

No Connect

Type 1

A10

I/O7

I/O6

I/O5

I/O4

I/O3

GND

I/O2

I/O1

I/O0

GND

I/O0

I/O1

I/O2

A16

A15

A12

PLCC Top View

DIP Top View

VCC

A17

A14

A13

A11

A10

I/O7

I/O6

I/O5

I/O4

I/O3

A14

A13

A11

A10

I/O7

(continued)

2-Megabit

(256K x 8)

5-volt Only

Flash Memory

AT49F020

Rev. 0567C–10/98

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