描述 Description

The AT25320B/640B provides 32768/65536 bits of serial electrically-erasable programmable read-only memory (EEPROM) organized as 4096/8192 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The AT25320B/640B is available in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin MiniMAP (MLP 2x3), 8-lead Ultra Lead Frame Land Grid Array (ULA) and 8-lead TSSOP packages.

特性 Features

? Serial Peripheral Interface (SPI) Compatible

? Supports SPI Modes 0 (0,0) and 3 (1,1)

– Datasheet Describes Mode 0 Operation

? Low-voltage and Standard-voltage Operation

– 1.8 (VCC = 1.8V to 5.5V)

? 20 MHz Clock Rate (5V)

? 32-byte Page Mode

? Block Write Protection

– Protect 1/4, 1/2, or Entire Array

? Write Protect (WP) Pin and Write Disable Instructions for Both Hardware and Software

Data Protection

? Self-timed Write Cycle (5 ms max)

? High Reliability

– Endurance: One Million Write Cycles

– Data Retention: 100 Years

? Automotive Devices Available

? 8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 8-lead

TSSOP and 8-lead Ultra Lead Frame Land Grid Array (ULA) Packages

? Die Sales: Wafer Form, Tape and Reel, and Bumped Wafers