The Microchip Technology Inc. 24LCS21 is a 128 x 8-bit dual-mode Electrically Erasable PROM. This device is designed for use in applications requiring storage and serial transmission of configuration and control information. Two modes of operation have been implemented: Transmit-Only mode and Bidirectional mode. Upon power-up, the device will be in the Transmit-Only mode, sending a serial bit stream of the entire memory array contents, clocked by the VCLK pin. A valid high-to-low transition on the SCL pin will cause the device to enter the Bidirectional mode, with byte selectable read/write capability of the memory array in standard I2C protocol.
Features:
• Completely implements DDC1™/DDC2™ interface for monitor identification
• Hardware write-protect pin
• Single supply with operation down to 2.5V
• Low-power CMOS technology:
- 1 mA active current, typical
- 10 μA standby current, typical at 5.5V
• 2-wire serial interface bus, I2C™ compatible (SCL)
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 8 bytes
• 100 kHz (2.5V) and 400 kHz (5V) compatibility (SCL)
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- Carefully tested and packaged by ChipWorker- Vacuum packed - Anti-static packaging - Anti-vibration foam
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