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DESCRIPTION

The Microchip Technology Inc. 25AA040/25LC040/25C040 (25xx040*) is a 4K bit serial Electrically Erasable PROM. 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. Access to the device is controlled through a chip select (CS) input.

FEATURES

? Low power CMOS technology

- Write current: 3 mA typical

- Read current: 500 μA typical

- Standby current: 500 nA typical

? 512 x 8 bit organization

? 16 byte page

? Write cycle time: 5ms max.

? 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

? Sequential read

? High reliability

- Endurance: 10M cycles (guaranteed)

- Data retention: > 200 years

- ESD protection: > 4000 V

? 8-pin PDIP, SOIC, and TSSOP packages

? Temperature ranges supported:

- Commercial: (C) 0°C to +70°C

- Industrial: (I) -40°C to +85°C

- Automotive: (E) (25C040) -40°C to +125°C