ATMEL AT45DCB008 User Manual

Features

• MultiMediaCard (MMC) Form Factor

• Single 2.7V to 3.6V Supply

• 20 MHz Max Clock Frequency

• Serial Peripheral Interface (SPI) Compatible

• Low Power Dissipation

– 4 mA Active Read Current Typical
– 2 µA CMOS Standby Current Typical

• Industrial Temperature Range

Description

The AT45DCB008, AT45DCB004 and AT45DCB002 are 2.7-volt only SPI compatible
serial interface DataFlash
byte (32-Mbit) and 2-megabyte (16-Mbit) densities. These 7-pin cards are form factor
compatible to the MultiMediaCard standard leveraging on a wide range of low cost
connectors that are commercially available. Additionally, the DataFlash Card is pinout
compatible to the SPI version of the MMC card.

The small form factor and simple interface make the DataFlash Card ideal for a wide
variety of data- and program code-storage applications where a removable storage
medium is required. Applications range from voice/audio, text or image storage to soft­ware applications, system upgrades and software patches.

For detailed device specifications, please refer to the corresponding DataFlash
datasheets:

• AT45DCB008 reference AT45DB642

• AT45DCB004 reference AT45DB321B

• AT45DCB002 reference AT45DB161B

®

Cards. They are offered in 8-megabyte (64-Mbit), 4-mega-

Pin Configuration

Pin # Pin Name Function

1CS Chip Select

2 SI Serial Input

3 GND Ground

4 VCC Supply

DataFlash Card

Top V i ew

7654321

8-megabyte,
4-megabyte,
and 2-megabyte

2.7-volt Only
DataFlash

®

Cards

AT45DCB008
AT45DCB004
AT45DCB002

5 SCK Serial Clock

6 NC No Connect

7 SO Serial Output

Rev. 3257A–11/01

1

Ordering Information

I

(mA)

f

SCK

(MHz)

20 10 0.01 AT45DCB008

CC

Ordering Code Package Operation RangeActive Standby

AT45DCB004
AT45DCB002

7DF1 Industrial

(-40°C to 85°C)

Package Type

7DF1 7-lead, 2.5 mm Pitch 24 x 32 x 1.4 mm Body DataFlash Card

2

AT45DCB002/B004/B008

3257A–11/01