24FC04H-E/MS

Memory IC Overview

The Microchip Technology 24FC04H-E/MS is a 4-Kbit (512 x 8) I²C serial EEPROM housed in an 8-lead MSOP package. It operates with a supply voltage range of 1.7V to 5.5V and supports clock frequencies up to 1 MHz. The device features hardware write protection for the upper half of the memory array (addresses 100h-1FFh) via the WP pin, while allowing full read/write access to the lower half when WP is grounded. It includes a 16-byte page write buffer and Schmitt trigger inputs for noise suppression.

Memory IC Feature Summary

• Hardware write protection for the upper half of the memory array
• I²C compatible two-wire serial interface supporting high-speed operation
• Low-power CMOS technology with minimal standby current consumption
• Schmitt trigger inputs and output slope control for signal integrity

Memory IC Applications

• Data logging in industrial environments requiring extended temperature stability
• Configuration storage for embedded systems operating at low voltages
• Parameter retention in consumer electronics with limited power budgets

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Extended temperature range (-40°C to +125°C) and 'MS' indicates the 8-lead MSOP package. Confirm the specific revision level of the datasheet DS20002119C matches the production batch requirements. Ensure compatibility with the system's I²C bus voltage levels and pull-up resistor configurations for reliable communication at 1 MHz speeds.

Memory IC Selection Notes

Select this component when high-speed I²C communication up to 1 MHz is required alongside low-voltage operation down to 1.7V. The Extended temperature grade makes it suitable for harsh environments where standard Industrial grade parts may fail. The half-array write protect feature is ideal for applications needing to safeguard critical configuration data stored in the upper memory block while allowing frequent updates to the lower block.

Memory IC Part Context

This part belongs to the 24XX04H family of 4-Kbit serial EEPROMs from Microchip Technology. It shares architectural similarities with the 24AA04H and 24LC04BH but offers superior clock speed capabilities. The 'H' designation signifies the inclusion of half-array write protection, distinguishing it from standard variants without this hardware feature.

Memory IC Replacement Considerations

Direct substitutes include other 24FC04H variants with different packages or temperature grades, such as 24FC04H-I/MS for Industrial temperature range. Cross-family replacements like 24LC04BH are not direct equivalents due to lower maximum clock frequency limits.