Product Summary

The ST24FC21BM1 is an 1K bit electrically erasable programmable memory (EEPROM), organized in 128x8 bits. In the text, products are referred as ST24xy21, where x is either L for VESA 1 or F for VESA 2 compatible memories and where y indicates the Write Control pin connection: C means WC on pin 7 and W means WC on pin 3.

Parametrics

ST24FC21BM1 absolute maximum ratings: (1)Ambient Operating Temperature: –40 to 85 °C; (2)Storage Temperature: –65 to 150 °C; (3)Lead Temperature, Soldering (PSDIP8 package): 260 °C; (4)Input or Output Voltages: –0.3 to 6.5 V; (5)Supply Voltage: –0.3 to 6.5 V; (6)Electrostatic Discharge Voltage (Human Body model): 4000 V; (7)Electrostatic Discharge Voltage (Machine model): 500 V.

Features

ST24FC21BM1 features: (1)1 million erase/write cycles; (2)40 years data retention; (3)3.6v to 5.5v or 2.5v to 5.5v single supply voltage; (4)Hardware write control (st24lw21 and st24fw21); (5)Ttl schmitt-trigger on vclk input; (6)100k / 400k hz compatibility with the i2c bus bit transfer range; (7)Two wire serial interface i2c bus compatible.

Diagrams

ST24FC21BM1 pin connection