FT93C66A-ISR-B

Overview

The FT93C66A-ISR-B 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 1.8 V to 5.5 V and features a write cycle time of 10 ms for both word and page operations. The component is housed in an 8-SOP package and is designed for through-hole installation. It functions reliably across an operating temperature range of -40°C to 85°C (TA).

Feature Summary

• Supports 3-wire serial communication protocol for data access.
• Provides non-volatile data retention without power.
• Compatible with wide supply voltage ranges from 1.8V to 5.5V.

Applications

• Data logging systems requiring small capacity storage.
• Configuration storage in embedded controllers.
• Parameter saving in industrial control units.

Procurement Notes

Verify the specific suffix 'ISR-B' against official Fremont Micro Devices documentation to confirm the 8-SOP package and 3-wire interface compatibility. Ensure the selected variant matches the required voltage and temperature specifications for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a 4Kb EEPROM with 3-wire serial interface is required in an 8-SOP package. Compare against the FT93C66A-IDR-B for DIP packaging alternatives. Verify that the 2 MHz clock speed meets system timing requirements and that the 1.8V minimum supply voltage aligns with the design's power rails.

Part Context

This part belongs to the FT93C66A series of serial EEPROMs from Fremont Micro Devices Ltd. The series provides various pinout and package options including DIP, SOP, and TSSOP configurations. The FT93C66A-ISR-B specifically denotes the surface-mount SOP variant with 3-wire interface capabilities, distinct from SPI variants like the FT93C66A-IDR-B.

Replacement Considerations

FT93C66A-IDR-B is listed as a similar alternative by distributors, offering the same electrical specifications but in an 8-DIP package instead of 8-SOP. Direct substitutes may include other 4Kb 3-wire EEPROMs from different manufacturers if pin compatibility allows.