24AA512/S16K

Memory IC Overview

The Microchip Technology 24AA512/S16K is a 512 Kbit (64K x 8) serial electrically erasable programmable read-only memory (EEPROM). It operates on a single supply voltage ranging from 1.7V to 5.5V and supports I²C compatible two-wire serial communication with a maximum clock frequency of 400 kHz at voltages above 2.5V. The device features a 128-byte page write buffer, hardware write protection via the WP pin, and Schmitt trigger inputs for noise suppression. It offers over one million erase/write cycles and data retention exceeding 200 years.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using functional address lines A0, A1, and A2.
• Includes hardware write protection that inhibits write operations when the WP pin is tied to VCC.
• Features output slope control to eliminate ground bounce during switching.

Memory IC Applications

• Personal communications systems requiring low-power non-volatile storage
• Data acquisition applications needing reliable parameter retention
• Industrial control systems utilizing I²C bus architectures

Memory IC Procurement Notes

Verify the specific package suffix against official datasheets, as standard industry suffixes may not apply directly to this part number. Confirm the operating temperature range matches the required industrial specifications. Ensure the voltage supply aligns with the 1.7V to 5.5V operational limits defined in the electrical characteristics.

Memory IC Selection Notes

Select this component for designs requiring robust data retention and low standby current consumption. The wide voltage range allows compatibility with various logic levels without external level shifters. Consider the page write buffer size when optimizing software for high-throughput write operations across the memory array.

Memory IC Part Context

This EEPROM belongs to the 24XX512 family, which includes variants like the 24LC512 and 24FC512. While sharing similar memory organization and interface protocols, differences exist in minimum operating voltage and maximum clock frequency capabilities depending on the specific series designation.

Memory IC Replacement Considerations

Direct substitutes within the same family include the 24LC512 and 24FC512, provided voltage and speed requirements are met. Verify package compatibility and temperature ratings before substitution.

Memory IC FAQ

How does the hardware write protection function?

Tying the WP pin to VCC inhibits all write operations to the array, while tying it to VSS enables them. Read operations remain unaffected regardless of the WP pin state.

What happens if a page write crosses a physical boundary?

If a page write command attempts to cross a physical page boundary, the data wraps around to the beginning of the current page instead of writing to the next page.