FT93C46A-USR-B

Overview

The FT93C46A-USR-B is a non-volatile EEPROM memory IC manufactured by Fremont Micro Devices Ltd. It features a 1Kb storage capacity organized as 128 x 8 or 64 x 16 bits. The device utilizes 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 supports surface mount installation in an 8-TSSOP package (0.173", 4.40mm wide). The component functions across a temperature range of -40°C to 85°C(TA) with a write cycle time of 10ms.

Feature Summary

• Provides non-volatile data retention for embedded applications
• Supports standard 3-wire serial communication protocol
• Operates with low voltage power supplies down to 1.8V

Applications

• Embedded systems requiring small-scale parameter storage
• Industrial control devices needing configuration retention
• Consumer electronics utilizing serial memory interfaces

Procurement Notes

Verify the specific suffix 'USR' against official Fremont Micro Devices documentation, as it may indicate a unique packaging or tape-and-reel specification distinct from the standard 'ITR' variant. Confirm RoHS compliance status and ensure the supplier provides valid traceability for this discontinued or limited-stock item before finalizing procurement orders.

Selection Notes

Select this component when a 1Kb EEPROM with a 3-wire interface is required in an 8-TSSOP package. Ensure the design accommodates the 1.8V to 5.5V operating range and that the host controller supports the necessary serial clock timing. Verify that the 85°C industrial temperature rating meets the environmental requirements of the target application.

Part Context

This part belongs to the 93C46A series of serial EEPROMs from Fremont Micro Devices Ltd. It serves as a drop-in replacement for similar industry-standard 93C46 devices, offering compatible pinouts and electrical characteristics while providing modern manufacturing standards and specific package configurations for surface-mount assembly.

Replacement Considerations

Direct substitutes include FT93C46A-ITR-B and FT93C46A-UTR-B from Fremont Micro Devices Ltd. Cross-manufacturer equivalents such as AT93C46D from Microchip Technology are also available.