24FC64FT-I/MS

Memory IC Overview

The Microchip Technology 24FC64FT-I/MS is a 64 Kbit (8K x 8) Electrically Erasable PROM featuring a 2-wire I²C serial interface. It supports a maximum clock frequency of 1 MHz and operates on a single supply voltage ranging from 1.7V to 5.5V. The device includes a 32-byte page write buffer and hardware write-protect functionality for the upper quarter of the array (addresses 1800h-1FFFh). It is housed in an 8-lead MSOP package, rated for industrial temperatures (-40°C to +85°C), and offers data retention exceeding 200 years with over one million erase/write cycles.

Memory IC Feature Summary

• Supports high-speed 1 MHz I²C communication with Schmitt trigger inputs for noise suppression.
• Features hardware write protection for the upper 1/4 of the memory array via the WP pin.
• Includes a 32-byte page write buffer to optimize write throughput.
• Operates on low-voltage single supplies down to 1.7V with minimal standby current.

Memory IC Applications

• Personal communications devices requiring non-volatile data storage.
• Data acquisition systems needing reliable parameter logging.
• Industrial control applications utilizing I²C bus architectures.
• Embedded systems requiring hardware-protected configuration memory.

Memory IC Procurement Notes

Verify that the 'T' suffix indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm the 'I' designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure the specific lot date codes meet project requirements as manufacturing dates vary by production batch. Cross-reference the full part number against official Microchip distributors to guarantee authenticity and traceability.

Memory IC Selection Notes

Select this component when a 1 MHz I²C speed is required alongside low-voltage operation starting at 1.7V. Choose the MSOP package for space-constrained surface-mount designs. Opt for the FT variant if automated pick-and-place assembly using reel packaging is necessary. Consider the hardware write-protect feature if security for the upper memory segment is critical.

Memory IC Part Context

This part belongs to the 24AA64F/24LC64F/24FC64F family of 64 Kbit serial EEPROMs. The 'FC' designation specifically denotes support for 1 MHz clock frequencies, distinguishing it from standard 400 kHz variants. The 'T' suffix identifies the reel packaging format, while 'MSOP' specifies the 8-lead mini-small-outline package type used for compact PCB layouts.

Memory IC Replacement Considerations

Direct functional substitutes within the same datasheet include the 24AA64F and 24LC64F, though they operate at lower clock speeds. For identical performance and packaging, verify availability of other 24FC64F variants with different suffixes such as PDIP or SOIC packages depending on assembly needs.

Memory IC FAQ

How does the Write-Protect (WP) pin function?

When tied to VCC, the WP pin inhibits write operations for the upper 1/4 of the array (addresses 1800h-1FFFh) while leaving read operations unaffected. Tying it to VSS enables writes to the entire array.

What is the maximum page write size?

The device features a 32-byte page write buffer, allowing up to 32 bytes to be written in a single sequence before a Stop condition initiates the internal write cycle.

Can multiple devices be connected on the same bus?

Yes, up to eight devices can be connected to the same I²C bus using the A0, A1, and A2 chip select address pins to differentiate slave addresses.