24LC512-I/ST

Memory IC Overview

The Microchip Technology 24LC512-I/ST is a 512 Kbit (64K x 8) serial electrically erasable PROM featuring an I²C-compatible two-wire interface. It operates on a single supply voltage ranging from 2.5V to 5.5V and supports clock frequencies up to 400 kHz within this range. The device utilizes an 8-lead TSSOP package and is rated for industrial temperatures between -40°C and +85°C. Key electrical characteristics include a maximum access time of 900 ns, a standby current of 1 µA maximum, and data retention exceeding 200 years.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using hardware address pins A0, A1, and A2.
• Includes a 128-byte page write buffer to facilitate efficient sequential data storage operations.
• Features Schmitt trigger inputs with hysteresis to suppress noise spikes on the SDA and SCL lines.
• Provides hardware write protection via the WP pin to inhibit array modifications when tied high.

Memory IC Applications

• Personal communications equipment requiring non-volatile parameter storage
• Data acquisition systems needing reliable long-term data retention
• Industrial control units utilizing low-power memory interfaces

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm the specific revision level against the manufacturer's latest datasheet to ensure compatibility with existing design specifications. Check for any recent product change notices regarding packaging or material composition updates before finalizing procurement orders.

Memory IC Selection Notes

Select this component for applications requiring moderate density storage with standard I²C connectivity. Ensure the system voltage remains above 2.5V to maintain the specified 400 kHz clock frequency. Consider the 128-byte page size when designing write algorithms to prevent data rollover across page boundaries during bulk transfers.

Memory IC Part Context

This part belongs to the 24XX512 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24AA512 and 24FC512 variants, differing primarily in operating voltage ranges and maximum clock speeds. The 24LC512 specifically targets applications requiring operation down to 2.5V, distinguishing it from lower-voltage or higher-speed alternatives within the same series.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 24LC512T-I/ST, 24LC512-I/SN, 24LC512-I/P.