24LC22A-I/SN

Memory IC Overview

The Microchip Technology 24LC22A-I/SN is a 2Kbit (256 x 8-bit) dual-mode serial EEPROM. It operates on a single supply voltage ranging from 2.5V to 5.5V and supports I²C-compatible 2-wire serial interfaces. The device features two operational modes: Transmit-Only mode for DDC1 compliance and Bidirectional mode for full read/write access. It includes an 8-byte page-write buffer, self-timed write cycles, and hardware write protection via the VCLK pin. The component provides over 4000V ESD protection, 1 million erase/write cycles, and data retention exceeding 200 years.

Memory IC Feature Summary

• Dual-mode operation supporting both DDC1 transmit-only and bidirectional I²C protocols
• Integrated 8-byte page-write buffer for efficient sequential data writing
• Hardware write protection capability controlled by the VCLK pin logic level
• High noise immunity with Schmitt trigger inputs and internal voltage threshold detection

Memory IC Applications

• Monitor identification and configuration storage compliant with Enhanced EDID standards
• Industrial control systems requiring non-volatile memory for parameter storage
• Display interface circuits utilizing Display Data Channel communication protocols

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the SOIC-8 package type rather than PDIP. Confirm the industrial temperature grade designation matches the required ambient operating range for your application environment. Ensure compatibility with the target system's I²C bus voltage levels before integration.

Memory IC Selection Notes

Select this component when dual-mode functionality is required for display applications or when hardware write protection is necessary. Consider the 8-byte page buffer size for write optimization. Verify that the available packages meet the board layout constraints and that the operating voltage range aligns with the system power supply specifications.

Memory IC Part Context

This device belongs to the 24LC22A family of serial EEPROMs manufactured by Microchip Technology. It is designed specifically for applications requiring robust monitor identification capabilities. The component integrates low-power CMOS technology to minimize active and standby current consumption while maintaining reliable data retention in demanding environments.

Memory IC Replacement Considerations

Direct substitutes within the same series include the 24LC22A-I/P for through-hole mounting requirements. Other capacity variants such as the 24LC21A or 24LC256 may serve as alternatives if different memory sizes are acceptable, provided the pinout and interface protocols remain compatible.