24FC64F-I/SN

Memory IC Overview

The Microchip Technology 24FC64F-I/SN is a 64 Kbit (8K x 8-bit) Electrically Erasable PROM featuring a 2-wire I²C compatible serial interface. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 1 MHz at VCC ≥ 2.5V, reducing to 400 kHz below 2.5V. The device supports industrial temperature ranges (-40°C to +85°C), includes a 32-byte page write buffer, and offers hardware write-protect for the upper quarter of the array.

Memory IC Feature Summary

• Supports high-speed 1 MHz clock operation for efficient data transfer in low-voltage applications
• Provides hardware write protection for the upper quarter of the memory array via the WP pin
• Enables cascading up to eight devices on a single bus using three address pins
• Features Schmitt trigger inputs for enhanced noise suppression and output slope control

Memory IC Applications

• Personal communication devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Embedded controllers utilizing I²C bus architecture
• Industrial instrumentation operating within wide voltage ranges

Memory IC Procurement Notes

Verify that the suffix 'I' confirms the Industrial temperature grade (-40°C to +85°C) and 'SN' denotes the 8-Lead SOIC package. Ensure the specific revision matches the DS22154B datasheet. Confirm RoHS compliance and Pb-free status if required by assembly specifications. Cross-reference the manufacturer's latest documentation for any updates to electrical characteristics or packaging options.

Memory IC Selection Notes

Select this component when a 64 Kbit EEPROM with 1 MHz I²C speed is required under low-voltage conditions down to 1.7V. It is suitable for designs needing hardware write protection for critical data segments. Choose over variants like 24LC64F only if the higher 1 MHz clock speed is necessary, as other models are limited to 400 kHz. Ensure the application environment stays within the specified industrial temperature range.

Memory IC Part Context

This part belongs to the 24XX64F family of 64 Kbit serial EEPROMs from Microchip Technology. It shares architectural similarities with the 24AA64F and 24LC64F but distinguishes itself through support for 1 MHz clock frequencies. The family utilizes a common 2-wire serial interface and offers multiple package options including PDIP, SOIC, TSSOP, MSOP, TDFN, and SOT-23.

Memory IC Replacement Considerations

Direct substitutes include the 24AA64F-I/SN and 24LC64F-I/SN. Note that these alternatives operate at a maximum clock frequency of 400 kHz, which may impact system throughput compared to the 1 MHz capability of the 24FC64F. Verify voltage compatibility, as the 24LC64F requires a minimum of 2.5V.