FT24C256A-USG-B

Overview

The FT24C256A-USG-B is a 256Kbit (32K x 8) serial EEPROM manufactured by Fremont Micro Devices Ltd. It utilizes an I²C interface with a maximum clock frequency of 1 MHz and features a 550 ns access time. The device operates within a supply voltage range of 1.8V to 5.5V and supports page write cycles with a maximum duration of 5 ms. It is housed in an 8-SOP package and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports standard two-wire bi-directional serial communication via I²C protocol
• Includes hardware write protection capability through dedicated pin configuration
• Features internally organized memory architecture for efficient data management

Applications

• Data acquisition systems requiring non-volatile storage
• Personal communications devices needing low-power memory solutions
• Industrial control units operating in wide voltage environments

Procurement Notes

Verify the specific suffix 'B' against official Fremont Micro Devices documentation, as it may indicate distinct packaging or compliance variations compared to the 'T' variant. Confirm the exact package type matches project requirements, as datasheets often list SOP variants. Ensure compatibility with system voltage levels before integration.

Selection Notes

Select this component for applications requiring robust I²C connectivity and broad voltage tolerance. The 1 MHz clock speed offers faster performance than standard 400 kHz alternatives. Consider the 8-SOP package dimensions for PCB layout constraints. Verify that the 5 ms write cycle time aligns with application timing requirements.

Part Context

This part belongs to the FT24C256A series of serial EEPROMs from Fremont Micro Devices. It shares core electrical specifications with other suffixes like USG-T but differs in physical packaging or reel configuration. The series is designed for CMOS processes to ensure low power consumption and high reliability in embedded systems.

Replacement Considerations

The FT24C256A-USG-T serves as a direct functional substitute with identical electrical characteristics. Other compatible parts include the FT24C256A-ETR-T for TSSOP packages. Cross-reference pinouts and voltage ranges when substituting.