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

Infineon Technologies FM25V20A-GTR

Name: FM25V20A-GTR
Brand: Infineon Technologies
SKU: FM25V20A-GTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FM25V20A-GTR

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-SOIC (0.209", 5.30mm Width)

Datasheet:: FM25V20A-GTR.pdf

Description:: IC FRAM 2MBIT SPI 40MHZ 8SOIC

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Product details

Overview

FM25V20A-GTR from Infineon is a 2-Mbit serial SPI ferroelectric RAM (F-RAM) organized as 256K × 8, operating at up to 40 MHz with 2.0–3.6 V supply, industrial temperature range (–40°C to +85°C), and 10¹⁴ read/write endurance. It serves as nonvolatile memory in real-time data logging systems where rapid, delay-free writes prevent data loss during power interruption.

For engineers reviewing the FM25V20A-GTR datasheet, FM25V20A-GTR pinout, FM25V20A-GTR application, or FM25V20A-GTR equivalent, key selection criteria include NoDelay™ write performance, hardware/software write protection granularity (1/4, 1/2, full array), SPI Mode 0/3 compatibility, and 151-year data retention without refresh.

Technical Context

The FM25V20A-GTR implements a synchronous SPI slave interface with zero-latency write execution: data commits immediately after byte transfer, eliminating polling and enabling deterministic timing-critical logging. Its internal logic includes dedicated instruction decoder, address counter, and nonvolatile status register supporting WPEN-controlled hardware write protection.

It uses ferroelectric capacitor-based memory cells enabling true RAM-like random access with nonvolatile retention-unlike flash or EEPROM, no erase cycles or wear leveling are required. The device supports dual-package options (SOIC-8 and DFN-8), both with identical pin mapping and electrical behavior across industrial temperature and voltage ranges.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	2 Mbit (256K × 8); provides 262,144 addressable bytes for compact firmware/data storage without external address latching.
Max SPI Clock	40 MHz; enables 5 MB/s sustained write throughput-4× faster than typical 10 MHz EEPROM interfaces.
Write Endurance	10¹⁴ cycles; supports continuous logging at 1 kHz for >3,170 years before wear-out, eliminating lifetime concerns in industrial sensors.
Data Retention	151 years at +85°C; guarantees data integrity over full product lifecycle without backup power or refresh circuitry.
Supply Voltage	2.0 V to 3.6 V; interoperates directly with 3.3 V microcontrollers and low-power IoT SoCs without level-shifting.
Active Current	800 µA at 1 MHz; reduces average system power in battery-operated edge nodes during frequent short-burst writes.
Sleep Current	3 µA; enables ultra-low-power standby in always-on monitoring devices with wake-on-CS activation.

Pinout & Package

FM25V20A-GTR is available in two RoHS-compliant 8-pin packages: SOIC-8 (width 3.9 mm) and DFN-8 (3 mm × 2 mm, exposed pad not connected). Both share identical pin functions and I/O mapping.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select input	Active-low enable: drives device into standby (tristate I/O, 100 µA) when HIGH; initiates all SPI transactions on falling edge.
SCK	Serial clock input	Synchronizes all I/O; rising edge samples SI, falling edge drives SO; supports 0–40 MHz with interruptible clock.
SI	Serial input	Receives opcodes, addresses, and write data; must be driven to valid logic level even during idle to meet IDD specs.
SO	Serial output	Drives read data and status bits only during active read cycles; tristated otherwise to avoid bus contention.
WP	Write protect input	Hardware lock: when WPEN=1 in status register, LOW on WP blocks Status Register writes-critical for secure configuration lockdown.
VDD	Power supply	2.0–3.6 V core supply; powers internal logic and FRAM array; decoupling capacitor required per layout guidelines.
VSS	Ground	Reference return path for all signals and power; must connect to system ground plane with low-inductance path.
DNU	Do Not Use	No internal connection; must be tied to VDD to prevent floating node and ensure stable operation.

Key Features

Feature	Design Value
NoDelay™ Writes	Zero-write-latency operation: each byte commits instantly upon SPI shift-in completion-no polling, no timeout handling in firmware.
10¹⁴ Endurance	Supports 100 million× more writes than standard EEPROM, enabling high-frequency sensor sampling (e.g., 10 kHz vibration capture) without wear-out risk.
Hardware + Software Write Protection	Combines WP pin (status register lock) with software-configurable block protection (1/4, 1/2, or full array), preventing accidental firmware corruption.
Device ID Readout	Manufacturer ID (0x01) and Product ID (0x20) accessible via RDID command-enables automatic BOM verification and field firmware validation.
SPI Mode 0 & 3 Support	Compatible with most MCU SPI peripherals without mode reconfiguration-reduces porting effort across ARM, RISC-V, and legacy 8-bit platforms.

Applications

Industrial Data Logger

Smart Metering

Use Scenario: Continuous timestamped recording of energy consumption, temperature, and fault events in utility meters with unpredictable power interruptions.

IC Role / Device Role / Timing Role: Nonvolatile buffer storing last-valid measurement before brownout; writes occur synchronously with ADC sampling clock.

Use Value: Eliminates data loss during microsecond-scale power dips-no capacitor hold-up or complex power-fail detection circuitry required.

Use Scenario: Storing tariff schedules, billing history, and tamper logs in electricity/water/gas meters deployed in uncontrolled environments.

IC Role / Device Role / Timing Role: Secure, long-life storage for regulatory-compliant audit trails; WP pin hard-locks critical configuration registers.

Use Value: 151-year retention ensures compliance over meter's 20+ year service life without periodic data migration or refresh.

PLC I/O Module

Medical Diagnostic Equipment

Use Scenario: Capturing real-time analog input/output states and diagnostic codes in programmable logic controllers operating in factory automation settings.

IC Role / Device Role / Timing Role: High-speed shadow memory for volatile process variables; updated every scan cycle without blocking CPU execution.

Use Value: 40 MHz SPI interface sustains 100 µs write latency-enabling sub-millisecond control loop updates without memory bottlenecks.

Use Scenario: Storing calibration coefficients, patient session logs, and safety-critical error histories in portable ultrasound and ECG devices.

IC Role / Device Role / Timing Role: Fail-safe parameter storage that survives battery replacement and sterilization cycles.

Use Value: 10¹⁴ endurance exceeds IEC 62304 software lifecycle requirements-no field recalls due to memory wear-out.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY14B102QN-SP25XI	Same density (2 Mbit), but Cypress/Infineon legacy F-RAM; max SPI speed 20 MHz; no DFN package option; requires external VCAP for power-loss write protection.	Limited to legacy designs requiring backward compatibility; lacks 40 MHz performance and modern low-power sleep mode (3 µA vs 15 µA).	Select only if existing board layout uses SOIC-8 and firmware relies on VCAP-based safe-write sequence.
AT25SF041-SSHD-B	4 Mbit SPI flash; 133 MHz QSPI capable but requires 25 ms page erase before write; 100k endurance; no true byte-write capability.	Suitable for firmware storage, not real-time logging; introduces indeterminate write latency and wear-leveling complexity.	Choose only for code storage where write frequency < 10×/day and deterministic timing is non-critical.

Compared with CY14B102QN-SP25XI and AT25SF041-SSHD-B, FM25V20A-GTR uniquely delivers deterministic 40 MHz write throughput, 10¹⁴ endurance, and 3 µA sleep current-making it the sole choice for high-cycle, time-sensitive industrial data capture without compromise.

Availability

FM25V20A-GTR is available at Aetrix Electronics and suitable for industrial data loggers, smart metering systems, PLC I/O modules, and medical diagnostic equipment requiring stable component supply across extended production lifecycles.

Supply support for FM25V20A-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 German semiconductor leader specializing in power management, automotive ICs, and reliable nonvolatile memory solutions for industrial and mission-critical applications.

The FM25V20A belongs to Infineon's F-RAM product line, engineered specifically for applications demanding unlimited write endurance, zero-write-latency, and guaranteed data retention in harsh, power-unstable environments.

FAQ

Does FM25V20A-GTR require an external capacitor for safe write operation?

No. Unlike earlier F-RAM generations, FM25V20A-GTR integrates on-die charge pumps and does not require an external VCAP capacitor. All write operations complete reliably within the specified 2.0–3.6 V supply range and industrial temperature conditions without auxiliary components.

Can FM25V20A-GTR be used as a direct hardware replacement for AT25DF041A SPI flash?

Yes-pin-compatible with standard 8-pin SOIC/SOP-8 footprint and identical SPI command set (Read, Write Enable, Write Status, etc.). However, FM25V20A-GTR eliminates erase commands and write delays, so firmware must remove polling loops and erase sequence calls to achieve full NoDelay™ benefit.

What is the function of the DNU pin, and how should it be handled on PCB layout?

The DNU (Do Not Use) pin is internally unconnected and must be tied to VDD on the PCB to prevent floating. Leaving it unconnected may cause increased leakage current or erratic behavior. This requirement applies identically to both SOIC-8 and DFN-8 packages per Infineon's layout guidelines.

How does the WP pin interact with software write protection settings?

When WPEN bit = 1 in the status register, the WP pin becomes active: pulling WP LOW disables all status register writes-including block protection changes. This creates a hardware-enforced lockdown. If WPEN = 0, WP has no effect, and software controls all protection settings exclusively.

FM25V20A-GTR Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: F-RAM™

Package/Case:: 8-SOIC (0.209", 5.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FRAM

Technology:: FRAM (Ferroelectric RAM)

Memory Size:: 2Mbit

Memory Organization:: 256K 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

FM25V20A-GTR FAQ

1.How can I place an order for FM25V20A-GTR through Aetrix?

Please submit a Request for Quotation (RFQ) for FM25V20A-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 FM25V20A-GTR reliable?

The price and inventory of FM25V20A-GTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FM25V20A-GTR is usually 5 days.

3.What payment methods are accepted for FM25V20A-GTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FM25V20A-GTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FM25V20A-GTR?

FM25V20A-GTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FM25V20A-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 FM25V20A-GTR?

For technical support, including FM25V20A-GTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FM25V20A-GTR requirements.

6.How does Aetrix verify that FM25V20A-GTR is sourced from the original manufacturer or authorized distributors?

All FM25V20A-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 FM25V20A-GTR meets industry standards.

7.What is the process for return or replacement of FM25V20A-GTR?

All FM25V20A-GTR units undergo pre-shipment inspection (PSI). If there is an issue with FM25V20A-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 FM25V20A-GTR part is unused and in its original packaging.

Return procedure for FM25V20A-GTR:

1.Submit a request within 90 days.

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

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