24LC32AF-E/MS

Memory IC Overview

The Microchip Technology 24LC32AF-E/MS is a 32 Kbit Electrically Erasable PROM organized as a single block of 4K x 8-bit memory. It operates with a supply voltage range of 2.5V to 5.5V and supports I2C™ compatible 2-wire serial interfaces at clock frequencies up to 400 kHz. The device features an access time of 900 ns, a maximum write cycle time of 5 ms, and an operating temperature range of -40°C to +125°C.

Memory IC Feature Summary

• Hardware write-protect capability for the upper quarter of the memory array
• Supports up to eight devices on the same bus via functional address pins
• Includes Schmitt trigger inputs for noise suppression

Memory IC Applications

• Personal communications systems
• Data acquisition applications
• Advanced low-power electronic designs

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the Automotive (E) temperature grade (-40°C to +125°C) and the MSOP package type. Confirm the voltage operation range matches the 2.5V minimum requirement specified for the 24LC32AF series rather than the lower voltage 24AA32AF variant.

Memory IC Selection Notes

Select this component when hardware write protection for a portion of the EEPROM array is required. Ensure the design accommodates the 2.5V minimum supply voltage constraint. Verify that the MSOP package dimensions fit the available PCB space and that the I2C bus timing requirements align with the master controller specifications.

Memory IC Part Context

This part belongs to the 24XX32AF family of 32 Kbit serial EEPROMs manufactured by Microchip Technology. The 'LC' designation indicates a 2.5V minimum operating voltage, distinguishing it from the 'AA' series which supports lower voltages down to 1.7V. The 'E' suffix denotes the extended automotive temperature rating.

Memory IC Replacement Considerations

The 24LC32A is a related device within the same family but lacks the quarter-array write-protect feature found in the AF series.