24LC04BHT-E/MNY

Memory IC Overview

The Microchip Technology 24LC04BHT-E/MNY 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 400 kHz when VCC is between 2.5V and 5.5V. The device operates within an extended temperature range of -40°C to +125°C and utilizes a TDFN-8 package.

Memory IC Feature Summary

• Hardware write-protect capability for the upper half of the memory array via the WP pin
• Integrated page write buffer allowing storage of up to 16 bytes before internal programming
• Schmitt trigger inputs and noise suppression filters on SDA and SCL lines

Memory IC Applications

• Data logging in industrial environments requiring extended temperature stability
• Configuration storage for embedded systems utilizing I2C communication
• Parameter retention in automotive electronics subject to thermal stress

Memory IC Procurement Notes

Verify that the ordering suffix 'E' confirms the extended temperature grade (-40°C to +125°C) and 'MNY' specifies the TDFN-8 package. Confirm the minimum operating voltage requirement of 2.5V aligns with the system power supply, as this variant does not support operation below 2.5V unlike other members of the 24XX04H family.

Memory IC Selection Notes

Select this component when hardware write protection for half the array is required alongside high-temperature reliability. Ensure the design accommodates the 2.5V minimum supply voltage constraint. Consider the TDFN-8 footprint constraints during PCB layout and verify that the 400 kHz maximum clock speed meets the bus timing requirements of the host controller.

Memory IC Part Context

This part belongs to the 24LC04BH series, which shares architectural similarities with the 24AA04H and 24FC04H devices but differs in voltage ranges and clock speeds. While the 24AA04H supports lower voltages down to 1.7V and the 24FC04H supports higher speeds up to 1 MHz, the 24LC04BH is optimized for standard 2.5V to 5.5V operations with 400 kHz compatibility.

Memory IC FAQ

How does the WP pin affect memory access?

When tied to VCC, the WP pin inhibits write operations to the upper half of the memory array (addresses 100h-1FFh), while read operations remain unaffected across the entire device.

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 instead of proceeding to the next page.