AT25DF021_09 Datasheet, PDF (1/41 Pages) ATMEL Corporation – 2-Megabit 2.3-volt or 2.7-volt Minimum SPI Serial Flash Memory

Features
• Single 2.3V - 3.6V or 2.7V - 3.6V Supply
• Serial Peripheral Interface (SPI) Compatible
– Supports SPI Modes 0 and 3
• 66 MHz Maximum Operating Frequency
– Clock-to-Output (t_V) of 6 ns 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
– Four Sectors of 64 Kbytes Each
• Hardware Controlled Locking of Protected Sectors via WP Pin
• 128-Byte Programmable OTP Security Register
• Flexible Programming
– Byte/Page Program (1 to 256 Bytes)
• Fast Program and Erase Times
– 1.0 ms Typical Page Program (256 Bytes) Time
– 50 ms Typical 4-Kbyte Block Erase Time
– 250 ms Typical 32-Kbyte Block Erase Time
– 450 ms Typical 64-Kbyte Block Erase Time
• 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 at 20 MHz)
– 15 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 (150-mil Wide)
– 8-pad Ultra Thin DFN (5 x 6 x 0.6 mm)
2-Megabit
2.3-volt or
2.7-volt
Minimum
SPI Serial Flash
Memory
AT25DF021
1. Description
The AT25DF021 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 AT25DF021, 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.
3677D–DFLASH–04/09