FT24C512A-UTG-T

Overview

The FT24C512A-UTG-T is a 512K-bit (65,536 x 8) serial EEPROM manufactured by Fremont Micro Devices Ltd. It operates within a supply voltage range of 1.8V to 5.5V and supports I²C interfaces with clock frequencies up to 1 MHz at 2.5V–5.5V and 400 kHz at 1.8V. The device features a 128-byte page write capability, self-timed write cycles of 5ms maximum, and an access time of 550 ns. It includes hardware write protection via the WP pin and functions reliably in industrial temperatures from -40°C to 85°C.

Feature Summary

• Supports standard two-wire bi-directional serial interface with Schmitt trigger inputs for noise immunity.
• Features hardware data protection through a dedicated Write Protect (WP) pin that disables programming operations.
• Includes automatic erase-before-write functionality and internal address counter management for sequential reads.

Applications

• Industrial control systems requiring non-volatile data storage
• Consumer electronics utilizing low-voltage power supplies
• Embedded devices needing hardware-level write protection

Procurement Notes

Verify the specific package type matches the design requirements, as the UTG suffix indicates Tape and Reel packaging. Confirm the operating voltage aligns with the system's power rails, noting the frequency limitations at 1.8V. Ensure the PCB layout accommodates the required decoupling capacitor specifications during power-up sequences.

Selection Notes

Select this component when high-density non-volatile storage is needed in a compact surface-mount form factor. Consider the 128-byte page write mode for efficient data throughput compared to byte-write operations. Evaluate the 1.8V minimum supply requirement against the target application's power budget and signal integrity needs.

Part Context

This part belongs to the FT24CxxxA series of Two-Wire Serial EEPROMs from Fremont Micro Devices. The series utilizes advanced CMOS technology for low-power operation and offers various package options including DIP, SOP, MSOP, TSSOP, and UDFN. The 512K density variant provides substantial storage capacity for complex configuration data or logging applications.

Replacement Considerations

FT24C512A-ETR-T

FAQ

How does the Write Protect (WP) pin function?

When the WP pin is connected to VCC or VIH, all programming functions are disabled, protecting the memory array. Read operations remain unaffected regardless of the WP pin state.

What happens if more than 128 bytes are written in a single sequence?

If more than 128 data words are transmitted, the internal address counter rolls over to the beginning of the current page, causing the new data to overwrite the previous data in that page.