24FC04H-E/P

Memory IC Overview

The Microchip Technology 24FC04H-E/P is a 4-Kbit (512 x 8) I²C serial EEPROM housed in an 8-pin PDIP package. It operates within a voltage range of 1.7V to 5.5V and supports clock frequencies up to 1 MHz across the full supply range. The device features hardware write protection for the upper half of the memory array (addresses 100h-1FFh) via the WP pin, which inhibits writes when tied to VCC. It includes a 16-byte page write buffer and Schmitt trigger inputs for noise suppression. The extended temperature grade (-40°C to +125°C) ensures reliable operation in demanding environments.

Memory IC Feature Summary

• Hardware write protection for the upper half of the memory array
• I²C compatible two-wire serial interface with 1 MHz clock support
• Low-power CMOS technology with standby current as low as 3 µA
• Schmitt trigger inputs and output slope control for noise immunity

Memory IC Applications

• Data logging in industrial monitoring systems
• Configuration storage for embedded controllers
• Calibration data retention in automotive electronics
• Parameter storage in consumer appliances

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Extended temperature range (-40°C to +125°C) and 'P' indicates the 8-pin PDIP package. Confirm the datasheet revision matches the required specifications. Ensure the application circuit provides adequate pull-up resistors on SDA and SCL lines for the selected bus speed. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Memory IC Selection Notes

Select this part when high-speed 1 MHz I²C communication is required at voltages below 2.5V, unlike the 24LC04BH variant. Choose the Extended temperature grade for applications exceeding standard industrial limits. The PDIP package is suitable for through-hole prototyping or manual assembly. Consider the half-array write protection feature if specific memory sectors require permanent data retention without software intervention.

Memory IC Part Context

This component belongs to the 24XX04H family of 4-Kbit serial EEPROMs from Microchip Technology. It shares architectural similarities with the 24AA04H and 24LC04BH but offers distinct electrical characteristics, specifically higher clock frequency compatibility. The family utilizes a common pinout and command set, facilitating design flexibility across different voltage and speed requirements while maintaining software compatibility.

Memory IC Replacement Considerations

The 24LC04H is a direct functional replacement with identical pinout and commands, though it may have different temperature or speed ratings depending on the specific suffix. Verify that any substitute part supports the required 1 MHz clock frequency at the minimum operating voltage of 1.7V.