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DESCRIPTION

The Microchip Technology Inc. 25LC320 is a 32K-bit serial Electrically Erasable PROM (EEPROM). The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines.

FEATURES

? SPI modes 0,0 and 1,1

? 3.0 MHz Clock Rate

? Single supply with Programming Operation down to 2.5V

? Low Power CMOS Technology

- Max Write Current: 5.0 mA

- Read Current: 1 mA at 5.5V, 3 Mhz

- Standby Current: 1 μA typical

? 4096 x 8 Organization

? 32-Byte Page

? Sequential Read

? Self-timed ERASE and WRITE Cycles

? Block Write Protection

- Protect none, 1/4, 1/2, or all of Array

? Built-in Write Protection

- Power On/Off Data Protection Circuitry

- Write Enable Latch

- Write Protect Pin

? High Reliability

- Endurance: 1M cycles (guaranteed)

- Data Retention: >200 years

- ESD protection: >4000V

? 8-pin PDIP/SOIC, 14-pin TSSOP

? Temperature ranges supported

- Commercial (C): 0°C to +70°C

- Industrial (I): -40°C to +85°C