AT25DF321A
Overview
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.
- 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
