FT93C56A-USR-B

Overview

The FT93C56A-USR-B is a 2Kbit (256 x 8 or 128 x 16) serial EEPROM manufactured by Fremont Micro Devices Ltd. It features a 3-wire serial interface with a clock frequency of 2 MHz. The device operates within a supply voltage range of 1.8V to 5.5V and supports surface-mount installation in an 8-SOP package (0.154"/3.90mm width). It is designed for non-volatile data storage applications requiring low power consumption and high reliability.

Feature Summary

• Supports 3-wire serial communication interface for efficient data transfer
• Includes built-in write enable latch (WEL) for enhanced data protection
• Operates across a wide supply voltage range from 1.8V to 5.5V
• Features high endurance with 1,000,000 write cycle capability

Applications

• Consumer electronics requiring compact non-volatile memory
• Industrial control systems needing reliable parameter storage
• Automotive modules utilizing low-voltage operation

Procurement Notes

Verify the specific suffix 'USR-B' corresponds to the 8-SOP package and 2MHz speed variant. Confirm RoHS3 compliance status for environmental regulations. Check for obsolescence notices as Fremont Micro Devices has undergone PCN updates for the 93C46A/56A/66A family. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a 2Kbit capacity is required with a 3-wire interface. Choose the USR-B variant specifically for the 8-SOP surface-mount package requirement. Ensure the system design accommodates the 1.8V to 5.5V operating voltage range. Verify that the 2MHz clock speed meets the application's timing constraints compared to slower alternatives.

Part Context

This part belongs to the 93C56A series of serial EEPROMs from Fremont Micro Devices Ltd. It is functionally similar to other industry-standard 93C56 devices but offers specific packaging and electrical characteristics defined by the manufacturer. The USR-B designation indicates the specific physical package and performance grade.

Replacement Considerations

FT93C56A-UTR-B is listed as a direct substitute. AT93C56D variants from Microchip Technology are also considered similar replacements. Verify pin compatibility and electrical specifications before substitution.