FT93C66A-IDR-B

Overview

The FT93C66A-IDR-B 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 an SPI serial interface with a maximum clock frequency of 2 MHz. It operates within a supply voltage range of 1.8 V to 5.5 V and supports a write cycle time of 10 ms for both word and page operations. The component is housed in an 8-DIP package (0.300 inch width) designed for through-hole mounting. It functions reliably across an ambient temperature range of -40°C to +85°C.

Feature Summary

• Supports dual memory organization formats allowing configuration for either byte-wide (x8) or word-wide (x16) data access.
• Features an SPI serial interface compatible with standard communication protocols for efficient data transfer.
• Includes fast write cycle capabilities with a specified duration of 10 ms for programming operations.

Applications

• Embedded systems requiring non-volatile data storage for configuration parameters
• Industrial control units needing reliable memory for operational logs
• Consumer electronics utilizing serial interface memory for firmware or calibration data

Procurement Notes

Verify the specific pinout and electrical characteristics against the official datasheet before integration, as variations may exist between manufacturers in this component family. Confirm that the target system supports the required SPI protocol and voltage levels. Ensure the through-hole packaging aligns with the printed circuit board design constraints. Check for any recent product change notices regarding manufacturing updates or compliance status changes.

Selection Notes

Select this component when a 4Kb EEPROM with SPI interface and through-hole packaging is required. It is suitable for applications needing a wide operating voltage range from 1.8V to 5.5V. Consider alternatives if surface-mount technology is preferred or if higher density storage is necessary. Verify compatibility with the host controller's SPI pins and timing requirements.

Part Context

This part belongs to the FT93C66A series of serial EEPROMs from Fremont Micro Devices Ltd. It is functionally similar to industry-standard 93C66 devices but offers specific packaging and electrical characteristics tailored for through-hole applications. The series typically includes variants with different interfaces and capacities, providing options for various memory size and connectivity needs in embedded designs.

Replacement Considerations

Direct substitutes include other 4Kb SPI EEPROMs in DIP-8 packages. Verify pin compatibility and voltage specifications when replacing with parts from different manufacturers such as Microchip or STMicroelectronics. Ensure the replacement supports the same write cycle times and operating temperature ranges.