Features

– 4 mA Active Read Current Typical

– 2 µA CMOS Standby Current Typical

1.

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

Table 1-1.

Pin Configuration

Pin #

Pin Name

Function

Figure 1-1.

DataFlash Card - Top View

1CS

Chip Select

2

SI

Serial Input

3

GND

Ground

4

VCC

Supply

5

SCK

Serial Clock

6

NC

No Connect

7

SO

Serial Output

8-megabyte,

4-megabyte,

and 2-megabyte

2.7-volt Only

Cards

AT45DCB008

AT45DCB004

AT45DCB002

3257C–DFLASH–04/06