24LC21 - MicrochipTechnology

24LC21 1K 2.5V Dual Mode I2C Serial EEPROM

The Microchip Technology Inc. 24LC21 is a 128 x 8 bit 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 m.

Features

• Single supply with operation down to 2.5V
• Completely implements DDC1™/DDC2™ interface for monitor identification
• Low-power CMOS technology: - 1 mA active current typical - 10 A standby current typical at 5.5V
• 2-wire serial interface bus, I2C™ compatible
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 8 bytes
• 100 kHz (2.5V) and 400 kHz (5V) compatibility
• Factory programming (QTP) available
• 1,000,000 erase/write cycles ensured
• Data retention > 200 years
• 8-pin PDIP and SOIC package
• Available for extended temperature ranges Commercia.