AT26DF321SU ATMEL Corporation, AT26DF321SU Datasheet

AT26DF321SU

Manufacturer Part Number

AT26DF321SU

Description

Manufacturer

ATMEL Corporation

Datasheet

1.AT26DF321SU.pdf (35 pages)

Specifications of AT26DF321SU

Case

SOP

Date_code

07+

Current page: 1 of 35
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Features

•

1. Description

The AT26DF321 is a serial interface Flash memory device designed for use in a wide

variety of high-volume consumer based applications in which program code is shad-

owed from Flash memory into embedded or external RAM for execution. The flexible

erase architecture of the AT26DF321, with its erase granularity as small as 4-Kbytes,

makes it ideal for data storage as well, eliminating the need for additional data storage

EEPROM devices.

The physical sectoring and the erase block sizes of the AT26DF321 have been opti-

mized to meet the needs of today's code and data storage applications. By optimizing

the size of the physical sectors and erase blocks, the memory space can be used

much more efficiently. Because certain code modules and data storage segments

must reside by themselves in their own protected sectors, the wasted and unused

memory space that occurs with large sectored and large block erase Flash memory

devices can be greatly reduced. This increased memory space efficiency allows addi-

tional code routines and data storage segments to be added while still maintaining the

same overall device density.

Single 2.7V - 3.6V Supply

Serial Peripheral Interface (SPI) Compatible

66 MHz Maximum Clock Frequency

Flexible, Uniform Erase Architecture

Individual Sector Protection with Global Protect/Unprotect Feature

Hardware Controlled Locking of Protected Sectors

Flexible Programming

Automatic Checking and Reporting of Erase/Program Failures

JEDEC Standard Manufacturer and Device ID Read Methodology

Low Power Dissipation

Endurance: 100,000 Program/Erase Cycles

Data Retention: 20 Years

Complies with Full Industrial Temperature Range

Industry Standard Green (Pb/Halide-free/RoHS Compliant) Package Options

– Supports SPI Modes 0 and 3

– 4-Kbyte Blocks

– 32-Kbyte Blocks

– 64-Kbyte Blocks

– Full Chip Erase

– Sixty-Four 64-Kbyte Physical Sectors

– Byte/Page Program (1 to 256 Bytes)

– 7 mA Active Read Current (Typical)

– 4 µA Deep Power-Down Current (Typical)

– 8-lead SOIC (200-mil wide)

– 16-lead SOIC (300-mil wide)

32-megabit

2.7-volt Only

Serial Firmware

DataFlash

Memory

AT26DF321

For New

Designs Use

AT25DF321

See applicable errata in

Section 17.

3633E–DFLASH–10/07

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