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FM25CL64B

64Kbit SPI F-RAM, 20MHz, 10^14 endurance, NoDelay writes, SOIC-8/DFN-8

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Manufacturer Part：

FM25CL64B

Package：

SOIC-8 (4.9 x 3.9mm) / DFN-8 (4.0 x 3.0mm)

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Description

Product Overview

The FM25CL64B from Infineon Technologies is a 64Kbit (8K x 8) serial F-RAM with SPI interface. As a non-volatile memory employing advanced ferroelectric process, it provides NoDelay writes at bus speed, 100 trillion read/write cycle endurance, and 151-year data retention, offering a superior drop-in replacement for serial EEPROM and Flash memory.

Key Specifications

Memory Size 64Kbit (8KB)
Organization 8K x 8
Interface SPI (Mode 0 and 3)
Max Clock Frequency 20MHz
Supply Voltage 2.7V to 3.65V
Write Endurance 100 trillion (10^14) cycles
Data Retention 151 years @ 65°C
Active Current 200μA @ 1MHz
Standby Current 3μA typ.
Package Options SOIC-8, DFN-8
Operating Temperature -40°C to +85°C

Features

  • NoDelay writes at bus speed
  • 100 trillion (10^14) read/write cycle endurance
  • 151-year data retention at 65°C
  • Hardware and software write protection
  • Supports SPI Mode 0 and Mode 3
  • Direct hardware replacement for serial EEPROM
  • Low power: 200μA active, 3μA standby
  • AEC-Q100 qualified

Applications

  • Industrial automation and data logging
  • Smart metering
  • Automotive electronics
  • Medical equipment
  • Enterprise storage systems

The FM25CL64B from Infineon Technologies is the base product number for a family of 64Kbit (8K x 8) serial F-RAM devices with SPI interface. Using an advanced ferroelectric process, this non-volatile memory performs read and write operations similar to RAM with no write delays. With 100 trillion read/write cycle endurance and 151-year data retention, it eliminates the need for wear leveling and provides a direct hardware replacement for serial EEPROM and Flash memory in applications requiring frequent or rapid writes.

The FM25CL64B uses ferroelectric RAM (F-RAM) technology where each memory cell stores data using ferroelectric polarization of a perovskite crystal. Unlike conventional Flash or EEPROM that use floating-gate charge storage requiring high-voltage erase/program cycles, F-RAM writes data by applying an electric field that switches the ferroelectric polarization. This process is inherently fast and does not require charge pumps, enabling NoDelay bus-speed writes. The read-restore mechanism ensures data integrity: each read operation also refreshes the cell. The SPI interface supports both Mode 0 and Mode 3 at clock rates up to 20MHz.

Pin Name Type Function
1 CS Input Active-low chip select
2 SO Output SPI serial data output
3 WP Input Write protect input
4 VSS Power Ground
5 SI Input SPI serial data input
6 SCK Input SPI serial clock
7 HOLD Input Suspend serial operation
8 VDD Power Supply voltage (2.7-3.65V)
  • Industrial data logging with high-frequency writes
  • Smart meter cumulative energy and event storage
  • Automotive ECU calibration and configuration data
  • Medical device patient data and event logs
  • Enterprise RAID controller write-log caching
Manufacturer Part Number Package Notes
Infineon FM25CL64B-GTR SOIC-8 Tape and reel version
Infineon FM25CL64B-DGTR DFN-8 DFN package version
Infineon FM25V02A-GTR SOIC-8 256Kbit F-RAM upgrade
Rohm BR24G128FVT-3AGE2 SOIC-8 128Kbit EEPROM alternative
Microchip AT25SF041-SSHB SOIC-8 4Mbit SPI Flash alternative
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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