[SAIFUN]

General Description

The SA25C020 is a 2Mb (512K X 4) CMOS non-volatile serial EEPROM. This device fully conforms to the SPI 4-wire protocol, is enabled through the Chip Select (CSb) pin, and uses Clock (SCK), Data-in (SI) and Data-out (SO) pins to synchronously control data transfer between the SPI microcontroller and the Serial EEPROM.

特性 Features

? Saifun NROM? Cell

? Serial Peripheral Interface (SPI) Compatible, Supports SPI Modes 0 (0,0) and 3 (1,1)

? Byte and Page Write Operation:

– 1024 pages (256 Bytes/Page)

– Single Byte or Page Write Cycle in 10ms Typical

? Single Supply Voltage: 2.7V to 3.6V

? 25MHz Clock Rate

? Block Write Protection: Protect Quarter, Half or Entire Array

? Write Protect Pin and Write Disable Instructions of Both Hardware and Software Data Protection

? 100,000 Erase Cycles (Minimum)

? More than 20-Year Data Retention

? Low-power Standby Current (less than 1μA)

? 8-SOIC Narrow Package

? MLF Leadless Package

? Temperature Range:

– Industrial: -40°C to +85°C

– Commercial: 0°C to +70°C