FT24C128A-USR-T

Overview

The FT24C128A-USR-T is a 128Kbit (16K x 8) serial electrically erasable programmable read-only memory manufactured by Fremont Micro Devices Ltd. It utilizes an I²C compatible two-wire serial interface with a maximum clock frequency of 1MHz. The device operates within a supply voltage range of 1.7V to 5.5V and supports industrial temperature ranges from -40°C to +85°C. Key electrical parameters include a typical write cycle time of 5ms, access time of 900ns, and standby current of 1µA. It features hardware write protection and self-timed write cycles.

Feature Summary

• Supports standard I²C bidirectional data transfer protocol with noise suppression inputs
• Includes hardware write protection capability via dedicated pin
• Features self-timed write cycles eliminating external timing control
• Operates across wide voltage range suitable for low power applications

Applications

• Low voltage consumer electronics requiring non-volatile storage
• Industrial control systems needing reliable parameter retention
• Automotive electronic modules operating in extended temperature environments

Procurement Notes

Verify the specific suffix 'USR' against official Fremont Micro Devices documentation to confirm package type and tape/reel specifications. Ensure compatibility with existing board layouts regarding the 8-pin TSSOP or SOIC footprint. Confirm that the 1MHz clock speed meets system bus requirements. Validate that the 1.7V minimum operating voltage aligns with the target application's power supply rails.

Selection Notes

Select this component when a 128Kbit capacity is required with I²C interface compatibility. Consider the 1.7V to 5.5V operating range for versatile power supply integration. Evaluate the 1MHz clock speed against system timing constraints. Verify the industrial temperature rating (-40°C to +85°C) matches environmental conditions. Check if the 8-pin surface mount package fits the design constraints.

Part Context

This part belongs to the FT24C128A series of serial EEPROMs from Fremont Micro Devices. The series offers various packaging options including TSSOP and SOIC. It competes with industry-standard 24C128 devices. The USR suffix typically denotes a specific package variant and tape/reel configuration for automated assembly.

Replacement Considerations

Cross-reference with other 128Kbit I²C EEPROMs such as AT24C128 or M24C128. Verify pinout compatibility and voltage level tolerances before substitution. Ensure equivalent write endurance and data retention specifications are met.