Description
The Microchip Technology Inc. 24LC41A is a dual port 128 x 8 and 512 x 8-bit Electrically Erasable PROM (EEPROM). This device is designed for use in applications requiring storage and serial transmission of configuration and control information. Three modes of operation have been implemented:
• Transmit-only mode for the DDC Monitor Port
• Bidirectional mode for the DDC Monitor Port
• Bidirectional, industry-standard 2-wire bus for the 4K Microcontroller Access Port

Features
• Single supply with operation down to 2.5V
• Completely implements DDC1/DDC2 interface
   for monitor identification, including recovery to
   DDC1
• Improved noise immunity
• Separate high speed 2-wire bus for
   microcontroller access to 4K-bit Serial EEPROM
• Low-power CMOS technology
• 2 mA active current typical
• 20 µA standby current typical at 5.5V
• Dual 2-wire serial interface bus, I2C™ compatible
• Hardware write-protect for Microcontroller Access
   Port
• Self-timed write cycle (including auto-erase)
• Page write buffer for up to 8 bytes (DDC port) or
   16 bytes (4K Port)
• 100 kHz (2.5V) and 400 kHz (5V) compatibility
• 1,000,000 erase/write cycles
• Data retention > 40 years
• 8-pin PDIP package
• Available for extended temperature ranges
   - Commercial (C): 0°C to +70°C
   - Industrial (I): -40°C to +85°C