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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Infineon Technologies FM25V05-GTR

Name: FM25V05-GTR
Brand: Infineon Technologies
SKU: FM25V05-GTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FM25V05-GTR

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: FM25V05-GTR.pdf

Description:: IC FRAM 512KBIT SPI 40MHZ 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:3,725

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Product details

Overview

FM25V05-GTR from Infineon Technologies (formerly Cypress) is a 512-Kbit (64K × 8) serial SPI ferroelectric RAM (F-RAM) with no write delay, 10¹⁴ read/write endurance, and 151-year data retention at +85 °C. It operates from 2.0 V to 3.6 V across –40 °C to +85 °C and delivers true byte-write capability at up to 40 MHz SPI clock speed - enabling real-time nonvolatile logging in industrial controllers and metering systems.

For engineers reviewing the FM25V05-GTR datasheet, FM25V05-GTR pinout, FM25V05-GTR application, or FM25V05-GTR equivalent, key selection criteria include write-cycle latency, endurance under frequent update loads, SPI mode 0/3 compatibility, hardware/software write protection granularity, and SOIC-8 footprint compatibility with legacy EEPROM/flash replacements.

Technical Context

The FM25V05-GTR implements a synchronous SPI slave interface supporting modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), with data latched on SCK rising edge and output on falling edge. Its internal F-RAM array eliminates erase-before-write overhead, enabling immediate byte-level writes without polling.

Write protection is implemented via dual-layer control: hardware-level WP pin gating of status register writes when WPEN = 1, and software-configurable block protection (1/4, 1/2, or full array) through the nonvolatile status register. Device ID includes manufacturer ID (0x01) and product ID (0x50).

Key Specifications

Parameter	Value and Actual Design Meaning
Memory density	512 Kbit (64K × 8); supports direct byte-addressable access without page management
Write endurance	10¹⁴ cycles; enables >27,000 writes/sec sustained over 10+ years in data-logging applications
Data retention	151 years at +85 °C; eliminates periodic refresh or backup power requirements
SPI speed	Up to 40 MHz; achieves ~5 MB/s effective write throughput with zero wait states
Supply voltage	2.0 V to 3.6 V; compatible with 3.3 V microcontroller I/O domains without level shifting
Operating temperature	–40 °C to +85 °C; qualified for industrial control and smart meter environments
Active current	300 µA at 1 MHz; reduces average power in burst-write sensor nodes

Pinout & Package

FM25V05-GTR is housed in an 8-pin Small Outline Integrated Circuit (SOIC) package with standard 150-mil body width and 1.27-mm pitch. Pin 1 is marked with a dot or notch; pin numbering follows JEDEC MS-012AA.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select input	Active-low enable; places device in standby (90 µA) when HIGH; requires falling edge before each opcode
SCK	Serial clock input	Synchronizes all SPI transfers; rising edge latches SI, falling edge drives SO; supports 0–40 MHz
SI	Serial input	Receives opcodes, addresses, and write data; must be driven to valid logic level to meet IDD specs
SO	Serial output	Drives read data and status bits; tristated when CS HIGH or HOLD LOW
WP	Write protect input	Hardware gate for status register writes when WPEN = 1; must tie to VDD if unused
HOLD	Operation suspend input	Pauses ongoing SPI transfer when pulled LOW while SCK is LOW; weak internal pull-up
VSS	Ground	Reference return path for all digital and analog circuitry; must connect to system ground
VDD	Power supply	Primary 2.0–3.6 V supply; powers core logic, F-RAM array, and I/O buffers

Key Features

Feature	Design Value
NoDelay™ write architecture	Eliminates write polling and timeout handling in firmware; enables deterministic sub-microsecond byte commits
Ferroelectric memory cell	Provides intrinsic nonvolatility without charge pumps or high-voltage programming; avoids flash wear leveling complexity
Hardware + software write protection	WP pin blocks status register modification; software block protection prevents accidental overwrite of critical configuration sectors
Device ID register	Returns fixed Manufacturer ID (0x01) and Product ID (0x50) via RDID command; enables runtime part validation in multi-device systems
SPI mode 0/3 compatibility	Interoperates with common MCU SPI peripherals (e.g., STM32, PIC, MSP430) without custom timing adjustments

Applications

Industrial Data Logger

Smart Energy Meter

Use Scenario: Continuous timestamped sensor sampling (e.g., temperature, voltage) at 100 Hz with power-loss resilience.

IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory storing last-known-good state and buffered samples prior to host upload.

Use Value: 10¹⁴ endurance ensures >27 years of continuous logging at 100 Hz; zero-delay writes prevent sample loss during brownout events.

Use Scenario: Tamper-proof energy consumption accumulation and tariff switching history storage.

IC Role / Device Role / Timing Role: Secure, high-endurance register bank for kWh counters and billing event timestamps.

Use Value: Hardware WP + software block protection prevents unauthorized firmware or tariff table modification; 151-year retention meets utility 20+ year field life requirements.

PLC I/O Module

Medical Diagnostic Device

Use Scenario: Storing calibration coefficients, fault logs, and configuration parameters in modular automation hardware.

IC Role / Device Role / Timing Role: Configuration EEPROM replacement with guaranteed write success under noisy industrial EMI conditions.

Use Value: Immunity to write failure due to power interruption or noise-induced SPI glitches - no need for checksum recovery or redundant storage.

Use Scenario: Capturing transient physiological waveforms (ECG, EEG) during battery-powered portable diagnostics.

IC Role / Device Role / Timing Role: Low-power, high-speed buffer between ADC and host processor for real-time waveform capture.

Use Value: 5 µA sleep current extends battery life; 40 MHz SPI enables full 12-bit sample streaming without FIFO overflow or data truncation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MB85RS512L	512 Kbit FRAM, 3.0–3.6 V only, max 20 MHz SPI, no HOLD pin	Lacks hold functionality and wider VDD range; unsuitable for brownout-prone or mixed-voltage systems	Select when cost sensitivity outweighs need for 2.0 V operation or interrupt-safe transfers
AT25DF041A	4 Mbit serial NOR flash, 2.7–3.6 V, 85 MHz, requires 25 ms erase/write cycles	Lower endurance (~100k cycles), write latency introduces risk of data loss during power loss	Choose only for high-density storage where infrequent updates and erase tolerance are acceptable

Compared with MB85RS512L and AT25DF041A, FM25V05-GTR uniquely combines 2.0–3.6 V operation, 40 MHz zero-latency writes, and 10¹⁴ endurance - making it the sole option for mission-critical, high-update-rate industrial logging where power integrity cannot be guaranteed.

Availability

FM25V05-GTR is available at Aetrix Electronics and suitable for industrial data loggers, smart energy meters, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for FM25V05-GTR 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and memory solutions - with broad industrial and automotive qualification expertise.

The FM25V05-GTR belongs to Infineon's F-RAM portfolio, designed specifically for applications demanding deterministic nonvolatile writes, extreme endurance, and seamless drop-in replacement of legacy serial EEPROM and flash in resource-constrained embedded systems.

FAQ

Is FM25V05-GTR pin-compatible with standard SOIC-8 SPI EEPROMs like AT25DF041A?

Yes - FM25V05-GTR uses identical SOIC-8 pinout (CS, SCK, SI, SO, WP, HOLD, VSS, VDD) and supports same SPI modes 0/3, enabling direct PCB-level replacement. No layout changes are needed, though firmware must remove write-polling loops due to NoDelay™ operation.

Does FM25V05-GTR require external high-voltage programming circuitry?

No - unlike EEPROM or flash, FM25V05-GTR uses ferroelectric memory cells that switch polarization states at standard I/O voltage (2.0–3.6 V). No charge pump, no erase cycle, and no high-voltage generator are required, simplifying power design and reducing BOM count.

How does the HOLD pin function during active SPI transfers?

When HOLD is pulled LOW while SCK is LOW, the FM25V05-GTR suspends the current SPI transaction (read or write) and tri-states SO. SCK and CS are ignored until HOLD returns HIGH, allowing the host CPU to service higher-priority interrupts without data corruption or bus contention.

What is the minimum pulse width requirement for the CS signal?

The datasheet specifies a minimum CS active pulse width of 100 ns. Each opcode must begin with a falling edge on CS, and CS must remain LOW for the full duration of the instruction - including opcode, address, and data bytes - plus one extra SCK cycle before going HIGH.

FM25V05-GTR Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: F-RAM™

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FRAM

Technology:: FRAM (Ferroelectric RAM)

Memory Size:: 512Kbit

Memory Organization:: 64K x 8

Memory Interface:: SPI

Clock Frequency:: 40 MHz

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: 2V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

FM25V05-GTR FAQ

1.How can I place an order for FM25V05-GTR through Aetrix?

Please submit a Request for Quotation (RFQ) for FM25V05-GTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for FM25V05-GTR reliable?

The price and inventory of FM25V05-GTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FM25V05-GTR is usually 5 days.

3.What payment methods are accepted for FM25V05-GTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FM25V05-GTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FM25V05-GTR?

FM25V05-GTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FM25V05-GTR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for FM25V05-GTR?

For technical support, including FM25V05-GTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FM25V05-GTR requirements.

6.How does Aetrix verify that FM25V05-GTR is sourced from the original manufacturer or authorized distributors?

All FM25V05-GTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that FM25V05-GTR meets industry standards.

7.What is the process for return or replacement of FM25V05-GTR?

All FM25V05-GTR units undergo pre-shipment inspection (PSI). If there is an issue with FM25V05-GTR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The FM25V05-GTR part is unused and in its original packaging.

Return procedure for FM25V05-GTR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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