FT24C32A-USR-B

Overview

The FT24C32A-USR-B is a 32Kbit (4K x 8) serial EEPROM manufactured by Fremont Micro Devices Ltd. It utilizes an I²C interface with a maximum clock frequency of 800 kHz and features a typical access time of 700 ns. The device operates within a supply voltage range of 1.8V to 5.5V and supports a write cycle time of 5 ms. It is housed in an 8-SOP package with a width of 0.154 inches (3.90 mm). The component functions as non-volatile memory with a specified operating temperature range of -40°C to 85°C.

Feature Summary

• Provides 32Kbit of non-volatile storage organized as 4K words of 8 bits each.
• Supports standard I²C serial communication protocols for data transfer.
• Includes automatic write protection mechanisms to safeguard stored data integrity.

Applications

• Data logging systems requiring persistent storage of sensor readings
• Configuration parameter storage in embedded control units
• Calibration data retention in industrial instrumentation

Procurement Notes

Verify the specific suffix 'USR-B' against official Fremont Micro Devices documentation to confirm the exact package type and tape/reel specifications. Ensure compatibility with system voltage levels between 1.8V and 5.5V. Confirm that the 800 kHz I²C speed meets the target application's timing requirements before finalizing procurement.

Selection Notes

Select this component when a compact 32Kbit EEPROM is required with I²C connectivity. The 8-SOP package suits space-constrained designs. Consider the 800 kHz clock rate versus the 1 MHz variants if signal integrity at higher speeds is a concern. Verify that the 5 ms write cycle time aligns with the application's power management and operational latency constraints.

Part Context

This part belongs to the FT24C32A series of serial EEPROMs from Fremont Micro Devices. The series offers various packaging options including SOP, TSSOP, and DIP configurations. The USR-B suffix specifically denotes the 8-SOP package variant. These devices are designed for general-purpose non-volatile memory applications where moderate density and reliable data retention are prioritized.

Replacement Considerations

Cross-reference with FT24C32A-ESG-T or FT24C32A-UTG-T for alternative packages such as ESOP or TSSOP. Verify pinout compatibility and electrical parameters before substitution. Ensure the replacement part maintains the same I²C addressability and voltage range specifications.