AT45DB021D-SHB ATMEL Corporation, AT45DB021D-SHB Datasheet

AT45DB021D-SHB

Manufacturer Part Number

AT45DB021D-SHB

Description

Manufacturer

ATMEL Corporation

Datasheet

1.AT45DB021D-SHB.pdf (54 pages)

Specifications of AT45DB021D-SHB

Case

SOP

Date_code

10+

Current page: 1 of 54
Download datasheet (2Mb)

Features

•

1. Description

The AT45DB021D is a 2.7V, serial-interface Flash memory ideally suited for a wide

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

AT45DB021D supports RapidS serial interface for applications requiring very high

speed operations. RapidS serial interface is SPI compatible for frequencies up to 66

MHz. Its 2,162,688 bits of memory are organized as 1,024 pages of 256 bytes or 264

bytes each. In addition to the main memory, the AT45DB021D also contains one

SRAM buffer of 256/264 bytes. EEPROM emulation (bit or byte alterability) is easily

handled with a self-contained three step read-modify-write operation. Unlike conven-

tional Flash memories that are accessed randomly with multiple address lines and a

parallel interface, the DataFlash

access its data. The simple sequential access dramatically reduces active pin count,

facilitates hardware layout, increases system reliability, minimizes switching noise,

and reduces package size.

Single 2.7V to 3.6V Supply

RapidS Serial Interface: 66 MHz Maximum Clock Frequency

User Configurable Page Size

Page Program Operation

Flexible Erase Options

One SRAM Data Buffer (256/264 Bytes)

Continuous Read Capability through Entire Array

Low-power Dissipation

Hardware and Software Data Protection Features

Sector Lockdown for Secure Code and Data Storage

Security: 128-byte Security Register

JEDEC Standard Manufacturer and Device ID Read

100,000 Program/Erase Cycles Per Page Minimum

Data Retention – 20 Years

Industrial Temperature Range

Green (Pb/Halide-free/RoHS Compliant) Packaging Options

– SPI Compatible Modes 0 and 3

– 256 Bytes per Page

– 264 Bytes per Page

– Page Size Can Be Factory Pre-configured for 256 Bytes

– Intelligent Programming Operation

– 1,024 Pages (256/264 Bytes/Page) Main Memory

– Page Erase (256 Bytes)

– Block Erase (2 Kbytes)

– Sector Erase (32 Kbytes)

– Chip Erase (2 Mbits)

– Ideal for Code Shadowing Applications

– 7 mA Active Read Current Typical

– 25 µA Standby Current Typical

– 15 µA Deep Power-down Typical

– Individual Sector

– 64-byte User Programmable Space

– Unique 64-byte Device Identifier

uses a RapidS serial interface to sequentially

2-megabit

2.7-volt

Minimum

DataFlash

AT45DB021D

3638I–DFLASH–04/09

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