FM31L278-G

Specialized ICS Overview

The FM31L278-G is a 256-Kbit integrated processor companion featuring ferroelectric random access memory (F-RAM) and a real-time clock (RTC). Logically organized as 32K x 8, it supports up to 1-MHz I2C communication. Operating voltage ranges from 2.7 V to 3.6 V with industrial temperature coverage of -40 °C to +85 °C. The device integrates supervisory functions including a programmable low-VDD reset, watchdog timer, early power-fail comparator, dual battery-backed event counters, and a lockable 64-bit serial number. It utilizes a 14-pin SOIC package.

Specialized ICS Feature Summary

• 256-Kbit F-RAM with 10^14 read/write endurance and 151-year data retention
• Integrated RTC with software calibration and battery/capacitor backup support
• Processor supervisor with programmable reset threshold and watchdog timer
• Dual 16-bit battery-backed event counters and lockable 64-bit serial number

Specialized ICS Applications

• Processor-based systems requiring nonvolatile memory and timekeeping
• Industrial control systems needing intrusion tracking via event counters
• Embedded devices requiring robust power-fail detection and reset management

Specialized ICS Procurement Notes

Verify the manufacturer designation, as Cypress Semiconductor Corporation was acquired by Infineon Technologies. Ensure the ordering part number matches the specific density variant required. Confirm that the 14-SOIC package and industrial temperature grade align with the system design specifications before procurement.

Specialized ICS Selection Notes

Select the FM31L278-G for applications requiring 256-Kbit capacity; use FM31L276 for 64-Kbit needs. Ensure the I2C bus supports up to 1-MHz frequency if high-speed operation is required. Verify that the external crystal matches the 6 pF/12.5 pF specification for optimal oscillator performance without additional loading capacitors.

Specialized ICS Part Context

This component belongs to the FM31L27x family of integrated processor companions. It combines F-RAM technology with standard peripheral functions to replace multiple discrete components. The product line is now managed under Infineon Technologies following the acquisition of Cypress Semiconductor.

Specialized ICS Replacement Considerations

FM31L276-G serves as the lower-density alternative within the same family. Cross-referencing with other F-RAM or FRAM devices requires verification of interface compatibility, voltage levels, and pinout configurations.