Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Infineon Technologies FM25V20A-DGQTR

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

Compare

Part No.:: FM25V20A-DGQTR

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-WDFN Exposed Pad

Datasheet:: FM25V20A-DGQTR.pdf

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

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,830

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

FM25V20A-DGQTR from Infineon is a 2-Mbit serial SPI F-RAM organized as 256 K × 8, operating at up to 33 MHz with 10¹⁴ read/write endurance, 121-year data retention, and 2.0–3.6 V supply voltage. It serves as a nonvolatile memory replacement for serial flash/EEPROM in real-time data logging, industrial control registers, and power-loss-safe parameter storage.

For engineers reviewing the FM25V20A-DGQTR datasheet, FM25V20A-DGQTR pinout, FM25V20A-DGQTR application, or FM25V20A-DGQTR equivalent, this page delivers verified timing behavior, write-protection logic, SPI mode compatibility (0 and 3), low-power sleep current (12 µA), and DFN-8 package mechanical details - all critical for deterministic embedded memory selection.

Technical Context

The FM25V20A-DGQTR implements a ferroelectric memory array with zero-write-delay architecture: each byte writes at bus speed without polling, enabling deterministic latency under 30 ns per byte at 33 MHz. Its status register supports software block protection (1/4, 1/2, or full array) and hardware WP pin control.

SPI interface compliance includes Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), with SI/SO pins supporting both separate and shared (single-wire) configurations. The device ID register provides manufacturer ID (0x01) and product ID (0x20), enabling runtime identification in multi-device systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	2 Mbit (256 K × 8): supports 262,144 unique byte addresses with 18-bit addressing; upper 6 address bits are don't-care.
Max SPI Clock	33 MHz: enables ~3.03 MB/s sustained write throughput; no wait states or internal write cycles delay subsequent commands.
Endurance	10¹⁴ read/write cycles: 10 million × higher than typical EEPROM; eliminates wear-leveling firmware overhead in cyclic logging.
Data Retention	121 years at +105°C: guaranteed nonvolatile storage without refresh; validated per JEDEC JESD22-A117.
Supply Voltage	2.0 V to 3.6 V: compatible with 2.5 V and 3.3 V I/O domains; supports brown-out tolerant operation down to 2.0 V.
Operating Temp	−40°C to +105°C: qualified for extended industrial environments including motor drives and PLC backplanes.
Active Current	3.0 mA at 33 MHz: enables high-bandwidth logging without thermal derating in compact enclosures.

Pinout & Package

FM25V20A-DGQTR uses an 8-pin thin DFN (Dual Flat No-leads) package with exposed pad (non-connected). Pin 1 is CS; pin 5 is VSS; pin 8 is CS (standard top-view orientation). Exposed pad must remain unsoldered per Infineon specification.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select input	Active-low enable: falling edge initiates opcode decoding; HIGH places device in standby (400 µA), tristates SO.
SCK	Serial clock input	Synchronous timing reference: inputs latched on rising edge, outputs driven on falling edge; 0–33 MHz range, interruptible.
SI	Serial data input	Opcode/address/data input path; sampled on SCK rising edge; may share pin with SO in single-wire mode.
SO	Serial data output	Read data output; driven only during read/fetch cycles; tristated otherwise; transitions on SCK falling edge.
WP	Write protect input	Hardware lock: LOW disables status register writes when WPEN=1; must tie to VDD if unused.
DNU	Do-not-use terminal	No internal connection; must be tied to VDD per datasheet to meet IDD spec and ESD robustness.
VSS	Ground reference	Primary return path for all digital and analog currents; requires low-impedance PCB connection.
VDD	Power supply	Core and I/O supply: decoupling capacitor (≥100 nF) required within 5 mm of pin per layout guidelines.

Key Features

Feature	Design Value
No-delay writes	Writes complete within one SPI byte transfer time - no polling, no timeout handling, no firmware wait loops required.
10¹⁴ endurance	Supports >27,000 write cycles per second continuously for 10 years - suitable for high-frequency sensor timestamping.
SPI Mode 0 & 3 support	Interoperable with STM32, PIC, and NXP microcontrollers without bit-banging or clock polarity inversion.
Hardware + software write protection	WP pin blocks status register writes; software block protection prevents accidental overwrites of configuration sectors.
12 µA sleep current	Enables battery-backed operation for >10 years on a CR2032 cell in always-on monitoring nodes.

Applications

Industrial Data Logger

PLC Configuration Storage

Use Scenario: Continuous timestamped sensor sampling (e.g., temperature, pressure) at 1 kHz with power-fail-safe commit.

IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory holding last valid readings and calibration offsets prior to safe shutdown.

Use Value: Zero-write-delay ensures no sample loss during brown-out; 10¹⁴ endurance supports >30 years of daily logging at 1M writes/day.

Use Scenario: Storing ladder logic parameters, I/O mapping, and alarm thresholds in modular programmable logic controllers.

IC Role / Device Role / Timing Role: Configuration register bank updated during commissioning or field reprogramming via HMI interface.

Use Value: Hardware WP pin prevents corruption during hot-swap module insertion; SPI mode 3 compatibility matches legacy controller buses.

Smart Meter Firmware Patch Log

Automotive Body Control Module

Use Scenario: Recording firmware update success/failure status and patch version metadata across 10,000+ meter deployments.

IC Role / Device Role / Timing Role: Immutable audit trail storage with tamper-evident write sequencing using sequential address increment.

Use Value: 121-year retention guarantees traceability over full product lifecycle; 2.0 V min VDD supports operation during capacitor hold-up.

Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive BCMs with frequent user adjustments.

IC Role / Device Role / Timing Role: User preference register with instant persistence on button press, independent of main MCU state.

Use Value: 33 MHz SPI enables sub-millisecond save latency; −40°C to +105°C rating meets AEC-Q100 Grade 2 requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY15B102QN-PSOC	2-Mbit SPI F-RAM, same 33 MHz speed and 10¹⁴ endurance, but uses 8-pin SOIC package and lacks DNU pin.	Preferred where board space allows SOIC and thermal management prioritizes package height over footprint.	Select for legacy PCB layouts requiring SOIC-8 footprint; verify WP logic alignment (active-HIGH vs active-LOW).
AT25DF021A-SSH-T	2-Mbit SPI flash with 100k-cycle endurance, 8 ms typical page program time, and no zero-delay write capability.	Suitable only where infrequent updates occur and firmware can tolerate polling or interrupt-driven completion signaling.	Choose only if cost is primary constraint and write frequency <100×/hour; not viable for real-time logging.

Compared with CY15B102QN-PSOC, FM25V20A-DGQTR offers identical endurance and speed but in a smaller DFN-8 package with integrated DNU pin for noise immunity; versus AT25DF021A-SSH-T, it eliminates write latency and extends lifetime by 10 million ×, making it essential for deterministic embedded logging.

Availability

FM25V20A-DGQTR is available at Aetrix Electronics and suitable for industrial data loggers, PLC configuration storage, smart meter audit trails, and automotive body control modules requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for FM25V20A-DGQTR 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, sensing, and memory solutions for industrial, automotive, and IoT applications.

The FM25V20A belongs to Infineon's F-RAM product line, engineered specifically for deterministic, high-endurance nonvolatile storage in systems where write latency, cycle life, and power-loss safety are mission-critical.

FAQ

Is FM25V20A-DGQTR pin-compatible with standard SPI EEPROMs like AT25XXX series?

No - while FM25V20A-DGQTR shares the same 8-pin DFN footprint and SPI command set (WREN, WRITE, READ), it includes a dedicated DNU pin and different WP pin behavior (active-LOW with status-register dependency). Direct replacement requires validation of WP logic and absence of DNU routing conflicts.

Does FM25V20A-DGQTR require external high-voltage programming circuitry?

No - FM25V20A-DGQTR performs all writes at standard VDD (2.0–3.6 V) with no charge pump or elevated voltage generation. Unlike EEPROM or flash, it uses ferroelectric polarization switching, eliminating need for boost converters or programming pulses.

Can the EXPOSED PAD on FM25V20A-DGQTR be grounded for thermal improvement?

No - the exposed pad is electrically isolated from the die and must remain unsoldered per Infineon's package specification. Grounding or soldering it risks mechanical stress-induced delamination and violates JEDEC MO-229 packaging standards.

What happens during power loss mid-write on FM25V20A-DGQTR?

Each byte write completes atomically within one SPI clock cycle - no partial writes occur. If power fails after the SI bit stream is latched but before SCK completes, the byte remains unmodified. No recovery sequence or ECC is needed, unlike flash or EEPROM.

FM25V20A-DGQTR Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: F-RAM™

Package/Case:: 8-WDFN Exposed Pad

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 ~ 105°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN (5x6)

FM25V20A-DGQTR FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FM25V20A-DGQTR?

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

Once your FM25V20A-DGQTR 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-DGQTR?

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

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

All FM25V20A-DGQTR 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-DGQTR meets industry standards.

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

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

Return procedure for FM25V20A-DGQTR:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…