Datasheet > ATT7022B

ATT7022B

更新时间： 2022-12-06 16:50:24

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数据手册

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ATT7022B 数据手册

Features

• Single 2.7V - 3.6V Supply

• Serial Peripheral Interface (SPI) Compatible

• 20 MHz Max Clock Frequency

• Page Program Operation

– Single Cycle Reprogram (Erase and Program)

– 8192 Pages (528 Bytes/Page) Main Memory

• Supports Page and Block Erase Operations

• Two 528-byte SRAM Data Buffers – Allows Receiving of Data

while Reprogramming of Nonvolatile Memory

• Continuous Read Capability through Entire Array

– Ideal for Code Shadowing Applications

• Low Power Dissipation

– 4 mA Active Read Current Typical

– 2 µA CMOS Standby Current Typical

• Hardware Data Protection Feature

• 100% Compatible to AT45DB321

32-megabit

2.7-volt Only

DataFlash^®

• 5.0V-tolerant Inputs: SI, SCK, CS, RESET and WP Pins

• Commercial and Industrial Temperature Ranges

AT45DB321B

Description

The AT45DB321B is a 2.7-volt only, serial interface Flash memory ideally suited for

a wide variety of digital voice-, image-, program code- and data-storage applications.

Its 34,603,008 bits of memory are organized as 8192 pages of 528 bytes each. In

addition to the main memory, the AT45DB321B also contains two SRAM

data buffers of 528 bytes each. The buffers allow receiving of data while a page in the

main memory is being reprogrammed, as well as reading or writing a continuous data

Pin Configurations

Pin Name

Function

CBGA Top View through Package

Chip Select

SCK

Serial Clock

Serial Input

NC SCK GND VCC NC

Serial Output

Hardware Page Write Protect Pin

Chip Reset

CS RDY/BSY WP NC

SI RESET NC

RESET

RDY/BUSY

Ready/Busy

DataFlash Card⁽¹⁾

SOIC

TSOP Top View

Type 1

GND

SCK

VCC

6 5 4 3 2 1

RDY/BUSY

RESET

RDY/BUSY

VCC

GND

SCK

Note:

1. See AT45DCB004 Datasheet

Rev. 2223D–DFLASH–10/02

12 3 4 5 6 7...32

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