FT24C256A-UMR-B

Overview

The FT24C256A-UMR-B is a 256Kbit (32K x 8) I²C EEPROM manufactured by Fremont Micro Devices Ltd. It operates within a supply voltage range of 1.8V to 5.5V and supports clock frequencies up to 1 MHz with an access time of 550 ns. The device features a write cycle time of 5 ms and functions across a temperature range of -40°C to 85°C. It is housed in an 8-MSOP package.

Feature Summary

• Non-volatile EEPROM memory technology for data retention
• I²C serial interface supporting standard communication protocols
• Wide operating voltage range compatible with various logic levels

Applications

• Data storage in embedded systems
• Configuration parameter retention
• Device identification and calibration data storage

Procurement Notes

Verify the specific suffix 'UMR-B' against official Fremont Micro Devices documentation to confirm the exact package type and tape/reel specifications. Ensure compatibility with system voltage requirements and I²C bus timing constraints before integration.

Selection Notes

Select this component when a 256Kbit capacity is required with I²C connectivity. Consider the 8-MSOP package size for space-constrained designs. Verify that the 1.8V minimum supply voltage meets the lowest system rail availability.

Part Context

This part belongs to the FT24C256A series, which includes variants like FT24C256A-ETR-T and FT24C256A-USG-T. These share identical electrical characteristics but differ in physical packaging, such as TSSOP or SOIC options, allowing flexibility in board layout design while maintaining functional equivalence.

Replacement Considerations

Cross-reference with FT24C256A-ETR-T or FT24C256A-USG-T if package adaptation is needed. Confirm pinout compatibility and verify that the substitute variant maintains the same 8-pin configuration and electrical ratings.