24AA08/WF15K

Memory IC Overview

The Microchip Technology 24AA08/WF15K is an 8-Kbit Electrically Erasable PROM (EEPROM) organized as four blocks of 256 x 8-bit memory. It features a two-wire serial interface compatible with I2C protocols. The device operates on a single supply voltage ranging from 1.7V to 5.5V, supporting industrial temperature ranges. Key electrical characteristics include a maximum clock frequency of 400 kHz at voltages above 2.5V and 100 kHz below that threshold. It incorporates a 16-byte page write buffer and hardware write-protect functionality via the WP pin.

Memory IC Feature Summary

• Supports bidirectional data transmission over a two-wire serial bus using standard I2C-compatible protocols.
• Includes Schmitt trigger inputs and filter circuits on SDA and SCL pins to suppress noise spikes and ensure reliable operation in noisy environments.
• Features a hardware write-protect pin that inhibits all write operations across the entire memory array when tied to VCC.
• Provides output slope control mechanisms designed to eliminate ground bounce during signal transitions.

Memory IC Applications

• Storing configuration parameters and calibration data in embedded systems
• Maintaining system status logs and operational counters
• Managing user-defined settings in consumer electronics devices

Memory IC Procurement Notes

Verify the specific suffix 'WF15K' against official Microchip documentation to confirm it denotes wafer-level packaging or factory special order status. Confirm RoHS compliance and temperature grade requirements match your design specifications. Ensure the sourcing channel provides valid traceability codes for quality assurance purposes.

Memory IC Selection Notes

Select this component when low-voltage operation down to 1.7V is required alongside standard I2C compatibility. Consider the 16-byte page write capability for efficient data updates. Evaluate the hardware write-protect feature if security against accidental modification is critical. Verify package availability matches your PCB layout constraints.

Memory IC Part Context

This part belongs to the 24XX08 family of serial EEPROMs, which also includes the 24LC08B and 24FC08 variants. While sharing similar memory architecture and interface protocols, these variants differ in minimum operating voltage and maximum clock speed specifications. The 24AA08 specifically supports operation down to 1.7V with speeds up to 400 kHz.

Memory IC FAQ

How does the Write-Protect (WP) pin function?

When the WP pin is connected to VCC, write operations are inhibited for the entire memory array. When connected to VSS, normal read and write operations are enabled.

What happens if a page write crosses a physical page boundary?

If a page write command attempts to cross a physical page boundary, the data wraps around to the beginning of the current page, overwriting previously stored data, rather than proceeding to the next page.