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AT25DF321A Dataheets PDF



Part Number AT25DF321A
Manufacturers Adesto
Logo Adesto
Description 32-Mbit 2.7V Minimum Serial Peripheral Interface Serial Flash Memory
Datasheet AT25DF321A DatasheetAT25DF321A Datasheet (PDF)

Features • Single 2.7V - 3.6V Supply • Serial Peripheral Interface (SPI) Compatible – Supports SPI Modes 0 and 3 – Supports RapidS Operation – Supports Dual-Input Program and Dual-Output Read Very High Operating Frequencies – 100MHz for RapidS – 85MHz for SPI – Clock-to-Output (tV) of 5ns Maximum Flexible, Optimized Erase Architecture for Code + Data Storage Applications – Uniform 4-Kbyte Block Erase – Uniform 32-Kbyte Block Erase – Uniform 64-Kbyte Block Erase – Full Chip Erase Individual Secto.

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Features • Single 2.7V - 3.6V Supply • Serial Peripheral Interface (SPI) Compatible – Supports SPI Modes 0 and 3 – Supports RapidS Operation – Supports Dual-Input Program and Dual-Output Read Very High Operating Frequencies – 100MHz for RapidS – 85MHz for SPI – Clock-to-Output (tV) of 5ns Maximum Flexible, Optimized Erase Architecture for Code + Data Storage Applications – Uniform 4-Kbyte Block Erase – Uniform 32-Kbyte Block Erase – Uniform 64-Kbyte Block Erase – Full Chip Erase Individual Sector Protection with Global Protect/Unprotect Feature – 64 Sectors of 64-Kbytes Each Hardware Controlled Locking of Protected Sectors via WP Pin Sector Lockdown – Make Any Combination of 64-Kbyte Sectors Permanently Read-Only 128-Byte Programmable OTP Security Register Flexible Programming – Byte/Page Program (1- to 256-Bytes) Fast Program and Erase Times – 1.0ms Typical Page Program (256-Bytes) Time – 50ms Typical 4-Kbyte Block Erase Time – 250ms Typical 32-Kbyte Block Erase Time – 400ms Typical 64-Kbyte Block Erase Time Program and Erase Suspend/Resume Automatic Checking and Reporting of Erase/Program Failures Software Controlled Reset JEDEC Standard Manufacturer and Device ID Read Methodology Low Power Dissipation – 12mA Active Read Current (Typical at 20MHz) – 5µA 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 (208-mil wide) – 8-pad Ultra Thin DFN (5 x 6 x 0.6mm) – 9-ball UBGA (6 x 6 x 0.6 mm body - 1 mm pitch) • • 32-Mbit 2.7V Minimum Serial Peripheral Interface Serial Flash Memory AT25DF321A • • • • • • • • • • • • • • • 3686F–DFLASH–1/2014 1. Description The AT25DF321A 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 AT25DF321A, 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 AT25DF321A 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 greatly reduced. This increased memory space efficiency allows additional code routines and data storage segments to be added while still maintaining the same overall device density. The AT25DF321A also offers a sophisticated method for protecting individual sectors against erroneous or malici.


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