24FC04HT-E/ST

Memory IC Overview

The Microchip Technology 24FC04HT-E/ST is a 4-Kbit Electrically Erasable PROM (EEPROM) organized as two blocks of 256 x 8-bit memory. It features a two-wire serial interface compatible with I2C protocols, supporting clock frequencies up to 1 MHz when VCC is between 1.7V and 5.5V. The device operates on a single supply voltage ranging from 1.7V to 5.5V. It includes hardware write-protect functionality for the upper half of the array (addresses 100h-1FFh) via the WP pin. The component supports page writes of up to 16 bytes and offers data retention exceeding 200 years with over one million erase/write cycles endurance.

Memory IC Feature Summary

• Supports high-speed 1 MHz I2C communication within specified voltage ranges
• Provides hardware-based write protection for half of the memory array
• Features low-power CMOS technology with minimal standby current consumption
• Includes Schmitt trigger inputs and output slope control for noise suppression

Memory IC Applications

• Data logging in industrial environments requiring extended temperature operation
• Configuration storage for embedded systems operating at low voltages
• Parameter retention in consumer electronics utilizing I2C buses
• Non-volatile memory backup for microcontroller applications

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Extended temperature range (-40°C to +125°C) and 'ST' indicates the TSSOP-8 package. Confirm the 'H' designation aligns with the Half-Array Write-Protect feature set. Ensure compatibility with the host system's I2C voltage levels, noting the 1.7V minimum operational threshold for this specific variant.

Memory IC Selection Notes

Select this component when an I2C EEPROM requires operation down to 1.7V and supports 1 MHz clock speeds. The Extended temperature grade is suitable for harsh environments where standard Industrial grades may fail. The TSSOP-8 package offers a compact surface-mount solution. Consider the half-array write protection if partial memory locking is required without software overhead.

Memory IC Part Context

This part belongs to the 24XX04H family of 4-Kbit I2C Serial EEPROMs. It shares architectural similarities with the 24AA04H and 24LC04BH but distinguishes itself through its ability to operate at lower voltages (down to 1.7V) and higher clock frequencies (up to 1 MHz). The family utilizes a common block diagram and bus protocol, differing primarily in electrical characteristics and temperature ratings.

Memory IC Replacement Considerations

Direct substitutes include other variants within the 24FC04H series such as 24FC04HT-I/MUY or 24FC04HT-I/Q4B, provided the package type matches. Cross-family replacements like the 24LC04BH are possible only if the application voltage does not drop below 2.5V and clock speed requirements do not exceed 400 kHz.