FT93C66A-ISR-T

Overview

The FT93C66A-ISR-T is a non-volatile EEPROM memory integrated circuit manufactured by Fremont Micro Devices Ltd. It provides a storage capacity of 4Kb, organized as 512 x 8 bits or 256 x 16 bits. The device utilizes a 3-wire serial interface and supports a clock frequency of up to 2 MHz. It operates within a supply voltage range of 1.8V to 5.5V and functions across an ambient temperature range of -40°C to +85°C. The component is housed in an 8-TSSOP surface-mount package with a write cycle time of 10ms.

Feature Summary

• Supports dual memory organization for both byte (x8) and word (x16) access modes.
• Features a standard 3-wire serial interface compatible with Microwire protocols.
• Includes hardware data write protection capabilities.

Applications

• Configuration storage for embedded systems
• Parameter retention in industrial control units
• Device identification and calibration data logging

Procurement Notes

Verify the specific suffix 'ISR' against official Fremont Micro Devices documentation to confirm exact packaging and tape-and-reel specifications. Ensure compatibility with existing board layouts regarding the 8-TSSOP footprint. Confirm that the 1.8V minimum operating voltage aligns with the target system power rails before finalizing procurement decisions.

Selection Notes

Select this component when a 4Kb EEPROM with a 3-wire interface is required in a compact TSSOP package. It is suitable for applications needing operation down to 1.8V. Compare against the FT93C66A-IDR-B variant if through-hole DIP packaging is preferred instead of surface mount technology.

Part Context

This part belongs to the FT93CxxA series of serial EEPROMs from Fremont Micro Devices Ltd. These devices are designed as drop-in replacements for industry-standard 93Cxx series memories. The series offers various capacities ranging from 1Kb to 16Kb, sharing common interface protocols and electrical characteristics while differing in physical package options.

Replacement Considerations

Direct substitutes include the FT93C66A-UTR-T and AT93C66B-XHM-T. Verify pinout compatibility and voltage ranges when transitioning between these alternatives.