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

Infineon Technologies FM25V02A-DGQ

Name: FM25V02A-DGQ
Brand: Infineon Technologies
SKU: FM25V02A-DGQ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FM25V02A-DGQ

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-WDFN Exposed Pad

Datasheet:: FM25V02A-DGQ.pdf

Description:: IC FRAM 256KBIT SPI 40MHZ 8DFN

Quantity:: RFQ Add To RFQ list

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Inventory:921

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Product details

Overview

FM25V02A-DGQ from Cypress Semiconductor is a 256-Kbit (32K × 8) serial SPI ferroelectric RAM (F-RAM) with no write delay, 10¹⁴ read/write endurance, and guaranteed operation from –40 °C to +105 °C. It replaces serial EEPROM/flash in data-logging, industrial control, and metering systems where rapid nonvolatile writes are critical.

For engineers reviewing the FM25V02A-DGQ datasheet, FM25V02A-DGQ pinout, FM25V02A-DGQ application, or FM25V02A-DGQ equivalent, key selection criteria include SPI mode 0/3 compatibility, hardware/software write protection, 33-MHz max clock rate, low-power sleep mode (12 µA), and RoHS-compliant 8-pin DFN package.

Technical Context

The FM25V02A-DGQ implements a synchronous SPI slave interface supporting modes 0 and 3, with data latched on SCK rising edge and output on falling edge. Its ferroelectric memory array enables true byte-write capability at bus speed-no polling or erase cycles required.

Write protection is implemented via dedicated WP pin (hardware lock), WREN/WRDI instructions (latch control), and software-configurable block protection (1/4, 1/2, or full array). A nonvolatile status register stores protection settings and manufacturer/product ID for host identification.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory density	256 Kbit (32K × 8) - supports up to 32,768 unique byte-addressable locations
Interface	SPI slave, modes 0 & 3 - interoperable with standard microcontroller SPI peripherals without custom timing logic
Max clock frequency	33 MHz - enables ~4 MB/s serial throughput for high-frequency logging
Write endurance	10¹⁴ cycles - eliminates wear-leveling firmware overhead in cyclic data buffers
Data retention	121 years at +85 °C - ensures long-term integrity without refresh or backup power
Supply voltage	2.7 V to 3.6 V - compatible with 3.3-V industrial and automotive power rails
Operating temperature	–40 °C to +105 °C - qualified for under-hood, factory-floor, and outdoor metering environments

Pinout & Package

FM25V02A-DGQ is housed in an 8-pin dual flat no-leads (DFN) package with exposed pad (not connected). Pin functions are validated per Cypress Document 001-90844 Rev. *G.

Pin/Terminal	Circuit Role	Design Meaning
SCK	Input	Serial clock input; all I/O synchronized to rising edge (mode 0/3); supports 0–33 MHz with interruptible clock
CS	Input	Active-low chip select; device enters standby and tri-states SO when HIGH
SI	Input	Serial data input (MOSI); sampled on SCK rising edge; must be driven to valid logic level for IDD compliance
SO	Output	Serial data output (MISO); driven only during read; tri-stated during HOLD or CS HIGH
WP	Input	Hardware write protect; blocks Status Register writes when LOW and WPEN = 1; must tie to VDD if unused
HOLD	Input	Operation suspend control; holds current transaction when LOW (SCK must be LOW during transition)
VSS	Power	Ground reference; must connect to system ground plane
VDD	Power	Primary supply input; powers internal logic and F-RAM array

Key Features

Feature	Design Value
NoDelay™ writes	Immediate byte-write completion at bus speed - eliminates polling loops and reduces CPU overhead by >90% vs. EEPROM
Ferroelectric process	10¹⁴ endurance and 121-year retention without charge-pump circuitry or erase blocks
Dual SPI mode support	Hardware compatibility with both mode 0 (CPOL=0, CPHA=0) and mode 3 (CPOL=1, CPHA=1) controllers
Flexible write protection	Three-layer scheme: WP pin, WREN latch, and software-configurable block locks (1/4, 1/2, full array)
Low-power sleep mode	12 µA quiescent current - extends battery life in portable and energy-harvested sensor nodes

Applications

Industrial Data Logger

Smart Electricity Meter

Use Scenario: Continuous timestamped sensor sampling at 100 Hz with power-loss resilience.

IC Role / Device Role / Timing Role: Nonvolatile buffer storing last 10,000 readings; accessed via SPI at 20 MHz during host polling.

Use Value: Eliminates data loss during brownouts due to zero-write-latency and 10¹⁴ cycle endurance across 15+ years of field operation.

Use Scenario: Tamper-proof energy consumption records updated every 10 seconds with cryptographic signature storage.

IC Role / Device Role / Timing Role: Secure parameter store holding calibration constants and signed usage logs; protected via WP pin and status-register lock.

Use Value: Prevents unauthorized modification while enabling sub-millisecond writes - critical for meeting ANSI C12.22 and DLMS/COSEM compliance.

Railway Signaling Controller

Medical Infusion Pump

Use Scenario: Real-time fault event logging in EN 5012x-certified signaling hardware operating at +105 °C ambient.

IC Role / Device Role / Timing Role: Extended-temperature F-RAM capturing diagnostic codes and watchdog resets; interfaced via isolated SPI.

Use Value: Guarantees 121-year data retention and 33-MHz operation without derating - satisfies SIL-2 data integrity requirements.

Use Scenario: Storing dose history, calibration offsets, and safety-critical error logs in Class II medical devices with battery backup.

IC Role / Device Role / Timing Role: Fail-safe memory retaining therapy parameters across power cycles; accessed during boot and runtime via SPI.

Use Value: Meets IEC 62304 clause 5.5.2 for nonvolatile memory reliability - no wear leveling or refresh needed over 10-year service life.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MB85RS2MT-FPN-GE1	2-Mbit FRAM, same 8-pin DFN, 40-MHz SPI, but requires 1.7–2.2 V supply	Not suitable for 3.3-V systems; lacks extended temperature rating (–40 °C to +85 °C only)	Select only for low-voltage, high-density upgrades with compatible rail and thermal envelope
AT25SF041-MAHD-T	4-Mbit serial flash, 105-MHz DTR SPI, but requires erase before write and has 100k-cycle endurance	Introduces 25-ms erase latency and wear-leveling complexity; unsuitable for sub-100-µs write-critical paths	Use only when density >256 Kbit is mandatory and write frequency is <100×/hour

Compared with MB85RS2MT-FPN-GE1 and AT25SF041-MAHD-T, FM25V02A-DGQ uniquely delivers 3.3-V operation, extended temperature support, and true zero-latency writes - making it the sole choice for high-cycle, mission-critical logging in industrial and medical systems.

Availability

FM25V02A-DGQ is available at Aetrix Electronics and suitable for industrial data loggers, smart meters, railway signaling controllers, and medical infusion pumps requiring stable component supply across extended temperature and high-reliability lifecycles.

Supply support for FM25V02A-DGQ 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) designs high-reliability nonvolatile memory and programmable system-on-chip solutions for industrial, automotive, and IoT applications.

The FM25V02A belongs to Cypress's F-RAM product line, engineered specifically to replace serial EEPROM and flash in applications demanding unlimited endurance, instant writes, and extended temperature operation without firmware complexity.

FAQ

Is FM25V02A-DGQ pin-compatible with standard SPI EEPROMs like AT25DF041?

Yes - FM25V02A-DGQ uses the same 8-pin DFN footprint and SPI command set (WREN, WRITE, READ, RDSR) as industry-standard serial EEPROMs. Hardware replacement requires no PCB change, though firmware must disable polling since writes complete immediately after byte transfer.

Does FM25V02A-DGQ require external high-voltage programming circuitry?

No - unlike EEPROM and flash, FM25V02A-DGQ performs writes using standard VDD (2.7–3.6 V) with no charge pump or high-voltage generator. All operations execute at core logic voltage, simplifying power design and eliminating HV-related EMI and layout constraints.

How does the HOLD pin behave during an active write operation?

When HOLD is asserted LOW during a write, the FM25V02A suspends the ongoing transaction and ignores further SCK and CS transitions until HOLD returns HIGH. The internal address counter and latch state are preserved, allowing seamless resumption without reissuing the opcode or address.

Can the Device ID be read while the memory array is being written?

Yes - the Device ID (Manufacturer ID 0x01, Product ID 0x20) resides in a separate read-only register and is accessible via RDID command regardless of array activity. Hosts may safely identify the device during background writes without arbitration or timing constraints.

FM25V02A-DGQ Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: F-RAM™

Package/Case:: 8-WDFN Exposed Pad

Packaging:: Tube

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FRAM

Technology:: FRAM (Ferroelectric RAM)

Memory Size:: 256Kbit

Memory Organization:: 32K 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-DFN (4x4.5)

FM25V02A-DGQ FAQ

1.How can I place an order for FM25V02A-DGQ through Aetrix?

Please submit a Request for Quotation (RFQ) for FM25V02A-DGQ 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 FM25V02A-DGQ reliable?

The price and inventory of FM25V02A-DGQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FM25V02A-DGQ is usually 5 days.

3.What payment methods are accepted for FM25V02A-DGQ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FM25V02A-DGQ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FM25V02A-DGQ?

FM25V02A-DGQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FM25V02A-DGQ 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 FM25V02A-DGQ?

For technical support, including FM25V02A-DGQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FM25V02A-DGQ requirements.

6.How does Aetrix verify that FM25V02A-DGQ is sourced from the original manufacturer or authorized distributors?

All FM25V02A-DGQ 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 FM25V02A-DGQ meets industry standards.

7.What is the process for return or replacement of FM25V02A-DGQ?

All FM25V02A-DGQ units undergo pre-shipment inspection (PSI). If there is an issue with FM25V02A-DGQ, 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 FM25V02A-DGQ part is unused and in its original packaging.

Return procedure for FM25V02A-DGQ:

1.Submit a request within 90 days.

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

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