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ST24LC21B, ST24LW21 ST24FC21, ST24FC21B, ST24FW21
1 Kbit (x8) Dual Mode Serial EEPROM for VESA PLUG & PLAY
1 MILLION ERASE/WRITE CYCLES 40 YEARS DATA RETENTION 3.6V to 5.5V or 2.5V to 5.5V SINGLE SUPPLY VOLTAGE HARDWARE WRITE CONTROL (ST24LW21 and ST24FW21) TTL SCHMITT-TRIGGER on VCLK INPUT 100k / 400k Hz COMPATIBILITY with the I2C BUS BIT TRANSFER RANGE TWO WIRE SERIAL INTERFACE I2C BUS COMPATIBLE I2C PAGE WRITE (up to 8 Bytes) I2C BYTE, RANDOM and SEQUENTIAL READ MODES SELF TIMED PROGRAMMING CYCLE AUTOMATIC ADDRESS INCREMENTING ENHANCED ESD/LATCH UP PERFORMANCES ERROR RECOVERY MECHANISM (ST24FC21 and ST24FW21) VESA 2 COMPATIBLE DESCRIPTION The ST24LC21B, ST24LW21, ST24FC21, ST24FC21B and ST24FW21 are 1K bit electrically erasable programmable memory (EEPROM), organized in 128x8 bits.