24LC16BH-I/MS

Memory IC Overview

The Microchip Technology 24LC16BH-I/MS is a 16-Kbit Electrically Erasable PROM organized as eight blocks of 256 x 8-bit memory. It operates on a single supply voltage ranging from 2.5V to 5.5V with a maximum clock frequency of 400 kHz. The device features low-power CMOS technology, drawing a maximum read current of 1 mA and standby current of 5 μA at extended temperatures. It supports I²C compatible two-wire serial interface, includes hardware write-protect for half the array, and offers over 1 million erase/write cycles with data retention exceeding 200 years.

Memory IC Feature Summary

• Hardware write-protect capability inhibits write operations to the upper half of the memory array when the WP pin is tied to VCC.
• Integrated Schmitt trigger inputs and output slope control suppress noise spikes and eliminate ground bounce for reliable bus communication.
• Self-timed erase/write cycle utilizes a 16-byte page write buffer to optimize data transfer efficiency.

Memory IC Applications

• Embedded systems requiring non-volatile data storage with limited I/O resources
• Industrial control units needing hardware-level write protection for critical parameters
• Low-voltage portable devices utilizing I²C communication protocols

Memory IC Procurement Notes

Verify that the ordering suffix corresponds to the MSOP-8 package type and Industrial temperature range (-40°C to +85°C). Confirm RoHS compliance status and ensure the specific variant matches the required voltage operating range of 2.5V to 5.5V. Cross-reference the manufacturer part number with official datasheets to validate pinout compatibility and electrical specifications before integration.

Memory IC Selection Notes

Select this component for applications requiring half-array write protection via the dedicated WP pin, distinguishing it from standard variants without this feature. Ensure the system voltage remains within the 2.5V to 5.5V operational range. Consider the MSOP-8 package dimensions for PCB layout constraints and verify that the I²C bus speed requirements do not exceed the 400 kHz limit specified for this voltage range.

Memory IC Part Context

This device belongs to the 24XX16H family of 16-Kbit serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24AA16H and 24FC16H but is specifically optimized for 2.5V to 5.5V operation. The 'I' designation indicates an industrial temperature rating, while 'MS' specifies the 8-lead MSOP package format.

Memory IC Replacement Considerations

Direct substitutes include other 24LC16B variants in different packages such as SOIC or TSSOP, provided the half-array write-protect feature is required. For full-array write-protect options, consider the standard 24LC16B series. Verify pinout compatibility and voltage ranges when replacing with generic I²C EEPROMs.

Memory IC FAQ

How does the hardware write-protect function operate?

Tying the WP pin to VCC inhibits write operations to the upper half of the memory array (addresses 400h-7FFh), while tying it to VSS enables write access to the entire memory space.

What is the purpose of the A0, A1, and A2 pins?

These pins are not connected internally in the 24XX16H device. They may be left floating or tied to either VSS or VCC without affecting functionality.