Infineon Technologies FM25V01-G

Overview

FM25V01-G from Cypress Semiconductor is a 128-Kbit (16 K × 8) serial SPI F-RAM nonvolatile memory with NoDelay™ writes, 10¹⁴ read/write endurance, and 151-year data retention. It operates from 2.0 V to 3.6 V across –40 °C to +85 °C and delivers true RAM-like write performance at up to 40 MHz SPI clock speed-used in real-time data logging, industrial sensor nodes, and metering systems where rapid, reliable nonvolatile storage is critical.

For engineers reviewing the FM25V01-G datasheet, FM25V01-G pinout, FM25V01-G application, or FM25V01-G equivalent, key selection criteria include zero-write-latency operation, hardware/software write protection granularity (1/4, 1/2, full array), SPI mode 0/3 compatibility, and SOIC-8 package integration with legacy EEPROM/flash footprints.

Technical Context

The FM25V01-G implements a ferroelectric memory array with direct byte-addressable SPI access-no page programming or erase cycles required. Its internal status register controls write enable latch, block protection bits (BP1/BP0), and write-enable bit (WEL), enabling fine-grained, deterministic write control without polling.

It functions as a synchronous SPI slave supporting CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes, with all inputs latched on SCK rising edge and outputs driven on falling edge. The HOLD pin suspends ongoing transfers synchronously when asserted low while SCK is low, preserving bus state integrity during host interrupts.

Key Specifications

Pinout & Package

FM25V01-G is housed in an 8-pin Small Outline Integrated Circuit (SOIC) package with standard 150-mil width and 1.27-mm pitch, compatible with automated PCB assembly and legacy EEPROM footprint layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial nonvolatile memory applications.

Compared with AT25DF041A and BR24G128FJ, FM25V01-G uniquely delivers zero-latency writes, 100-trillion-cycle endurance, and hardware-assisted protection-making it the only viable choice for applications demanding both speed and longevity without firmware compensation.

Availability

FM25V01-G is available at Aetrix Electronics and suitable for industrial data loggers, smart energy meters, PLC I/O modules, and medical diagnostic sensor hubs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for FM25V01-G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) is a global leader in embedded solutions, specializing in high-reliability memory, PSoC programmable systems-on-chip, and USB-C controllers.

The FM25V01-G belongs to Cypress's F-RAM product line-designed specifically to replace serial flash and EEPROM in applications where write speed, endurance, and power efficiency are non-negotiable.

FAQ

Is FM25V01-G pin-compatible with standard SOIC-8 SPI EEPROMs?

Yes-FM25V01-G uses identical 8-pin SOIC packaging and matches the pinout of industry-standard SPI EEPROMs (e.g., AT25xxx, CAT25xxx). CS, SCK, SI, SO, WP, HOLD, VSS, and VDD align functionally and physically, enabling drop-in replacement without PCB redesign.

Does FM25V01-G require external circuitry for write protection?

No-FM25V01-G integrates dual-layer write protection: hardware via the WP pin (active-low lock for Status Register) and software via BP1/BP0 bits in the Status Register. No external resistors, jumpers, or logic gates are needed to secure memory regions.

Can FM25V01-G operate reliably at 2.0 V supply voltage?

Yes-FM25V01-G is fully specified from 2.0 V to 3.6 V. At 2.0 V, it maintains 40 MHz SPI operation, 10¹⁴ endurance, and 151-year data retention across the full –40 °C to +85 °C range, validated per Cypress datasheet 001-84492 Rev. *F.

What happens to an ongoing write when the HOLD pin is asserted?

When HOLD is pulled LOW while SCK is LOW, the FM25V01-G immediately suspends the current SPI transaction-preserving internal address counters and status. No data is lost or corrupted. Upon HOLD deassertion, the device resumes exactly where it left off, maintaining full protocol compliance.