FT93C66A-USR-T

Overview

The FT93C66A-USR-T is a non-volatile EEPROM memory IC manufactured by Fremont Micro Devices Ltd. It offers a storage capacity of 4Kb, organized as 512 x 8 or 256 x 16 bits. The device supports a 3-wire serial interface with a clock frequency of 2 MHz. It operates within a supply voltage range of 1.8V to 5.5V and functions at temperatures from -40°C to 85°C. The component is housed in an 8-SOIC package (0.154", 3.90mm width) and features a write cycle time of 10ms.

Feature Summary

• Supports 3-wire serial communication interface for data access
• Includes built-in write enable latch mechanism
• Provides high endurance with one million write cycles
• Ensures long-term data retention capabilities

Applications

• Embedded systems requiring compact non-volatile storage
• Industrial control units needing reliable parameter retention
• Consumer electronics utilizing low-power memory solutions

Procurement Notes

Verify the specific suffix 'USR-T' corresponds to the 8-SOIC surface mount package and cut tape packaging configuration. Confirm that the 2 MHz clock speed requirement aligns with your system bus specifications. Ensure compatibility with the 1.8V to 5.5V operating voltage range for your target application environment.

Selection Notes

Select this component when a small footprint 8-SOIC package is required for 4Kb EEPROM applications. It is suitable for designs needing 3-wire interface compatibility rather than standard SPI. Consider the 10ms write cycle time for timing constraints during data logging operations.

Part Context

This part belongs to the FT93C66A series of serial EEPROMs from Fremont Micro Devices. It serves as a drop-in replacement for legacy 93C66 devices. The series provides cost-effective memory solutions for embedded applications requiring moderate storage density.

Replacement Considerations

Direct substitutes include AT93C66B-XHM-T from Microchip Technology. Verify pinout compatibility and electrical characteristics before substitution.