AT45DB321B datasheet, PDF - EEWORLD Datasheet

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AT45DB321B: Description8-megabyte, 4-megabyte, and 2-megabyte 2.7-volt Only DataFlash Cards; File Size51KB，5 Pages; ManufacturerAtmel (Microchip)

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AT45DB321B Overview

8-megabyte, 4-megabyte, and 2-megabyte 2.7-volt Only DataFlash Cards

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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

•

Pb-free/RoHS-compliant Package

1. Description

The AT45DCB008, AT45DCB004 and AT45DCB002 are 2.7-volt only SPI compatible

serial interface DataFlash

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

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 #

8-megabyte,

4-megabyte,

and 2-megabyte

2.7-volt Only

DataFlash

Cards

AT45DCB008

AT45DCB004

AT45DCB002

Pin Configuration

Function

Chip Select

Serial Input

7 6 5 4 3 2 1

Pin Name

GND

VCC

SCK

Figure 1-1.

DataFlash Card - Top View

Ground

Supply

Serial Clock

No Connect

Serial Output

3257C–DFLASH–04/06

AT45DB321B Related Products

	AT45DB321B	AT45DCB004	AT45DCB008	AT45DCB008_06	AT45DB642	AT45DB161B
Description	8-megabyte, 4-megabyte, and 2-megabyte 2.7-volt Only DataFlash Cards	8-megabyte, 4-megabyte, and 2-megabyte 2.7-volt Only DataFlash Cards	8-megabyte, 4-megabyte, and 2-megabyte 2.7-volt Only DataFlash Cards	8-megabyte, 4-megabyte, and 2-megabyte 2.7-volt Only DataFlash Cards	8-megabyte, 4-megabyte, and 2-megabyte 2.7-volt Only DataFlash Cards	8-megabyte, 4-megabyte, and 2-megabyte 2.7-volt Only DataFlash Cards

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