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AT25DF321

ATMEL Corporation
Part Number AT25DF321
Manufacturer ATMEL Corporation
Description 32M-Bit Serial Firmware Dataflash Memory
Published Dec 27, 2007
Detailed Description www.DataSheet4U.com Features • Single 2.7V - 3.6V Supply • Serial Peripheral Interface (SPI) Compatible – Supports SPI ...
Datasheet PDF File AT25DF321 PDF File

AT25DF321
AT25DF321

Overview
www.
DataSheet4U.
com Features • Single 2.
7V - 3.
6V Supply • Serial Peripheral Interface (SPI) Compatible – Supports SPI Modes 0 and 3 • 70 MHz Maximum Clock Frequency • Flexible, Uniform Erase Architecture – 4-Kbyte Blocks – 32-Kbyte Blocks – 64-Kbyte Blocks – Full Chip Erase Individual Sector Protection with Global Protect/Unprotect Feature – Sixty-Four 64-Kbyte Physical Sectors Hardware Controlled Locking of Protected Sectors Flexible Programming – Byte/Page Program (1 to 256 Bytes) Automatic Checking and Reporting of Erase/Program Failures JEDEC Standard Manufacturer and Device ID Read Methodology Low Power Dissipation – 7 mA Active Read Current (Typical) – 4 µA Deep Power-Down Current (Typical) 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 – 8-lead SOIC (200-mil wide) – 16-lead SOIC (300-mil wide) • • • • • • 32-megabit 2.
7-volt Only Serial Firmware DataFlash® Memory AT25DF321 • • • • 1.
Description The AT25DF321 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 shadowed from Flash memory into embedded or external RAM for execution.
The flexible erase architecture of the AT25DF321, 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 AT25DF321 have been optimized 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 great...


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