Features
• MultiMediaCard (MMC) Form Factor
• Single 2.7V to 3.6V Supply
• 66 MHz Max Clock Frequency
• Serial Peripheral Interface (SPI) Compatible
• Low Power Dissipation
– 10 mA Active Read Current Typical
– 25 µA CMOS Standby Current Typical
• Industrial Temperature Range
• Pb-free/RoHS-compliant Package
1. Description
The AT45DCB008D, AT45DCB004D and AT45DCB002D are 2.7-volt only SPI com-
patible serial interface DataFlash
®
Cards. They are offered in 8-megabyte (64-Mbit),
4-megabyte (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:
• AT45DCB008D reference AT45DB642D
• AT45DCB004D reference AT45DB321D
• AT45DCB002D reference AT45DB161D
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
4VCC Supply
5 SCK Serial Clock
6 NC No Connect
7 SO Serial Output
7654321
8-megabyte,
4-megabyte, and
2-megabyte
2.7-volt Only
DataFlash
®
Cards
AT45DCB008D
AT45DCB004D
AT45DCB002D
3607E–DFLASH–01/08
