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

Infineon Technologies FM25V20A-PG

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

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Part No.:: FM25V20A-PG

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: FM25V20A-PG.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:3,345

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Product details

Overview

FM25V20A-PG from Infineon is a 2-Mbit serial SPI ferroelectric RAM (F-RAM), logically organized as 256 K × 8, operating at up to 25 MHz with industrial temperature range (–40°C to +85°C), 10¹⁴ read/write endurance, and 151-year data retention. It serves as a nonvolatile memory replacement for serial flash/EEPROM in real-time data logging, industrial control registers, and metering calibration storage.

For engineers reviewing the FM25V20A-PG datasheet, FM25V20A-PG pinout, FM25V20A-PG application, or FM25V20A-PG equivalent, key selection criteria include zero-write-delay operation, hardware/software write protection, SPI Mode 0/3 compatibility, low-voltage operation (2.0–3.6 V), and PDIP-8 package integration into legacy board designs.

Technical Context

The FM25V20A-PG implements a synchronous SPI slave interface with no internal write latency-data commits immediately after each byte transfer without polling. Its on-chip ferroelectric memory array eliminates erase cycles and supports true byte-level writes at bus speed.

It features a 3-byte address space (18-bit effective addressing), a nonvolatile status register with WPEN bit, and dual write protection: hardware via active-low WP pin and software via WREN/WRDI instructions and block-protection bits (BP0/BP1) for 1/4, 1/2, or full-array lock.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	2 Mbit (256 K × 8); supports byte-addressable nonvolatile storage without erase overhead.
SPI Clock Frequency	Up to 25 MHz; enables sub-μs per-byte write latency and full 256 KB transfer in ≤82 ms at max speed.
Write Endurance	10¹⁴ cycles; sustains continuous logging at 100 Hz for >31 years without wear-out failure.
Data Retention	151 years at +85°C; guarantees archival integrity without refresh or backup power.
Supply Voltage	2.0 V to 3.6 V; compatible with 2.5 V and 3.3 V logic domains without level-shifting.
Operating Temperature	–40°C to +85°C; validated for industrial control cabinets and outdoor metering enclosures.
Active Current	800 µA at 1 MHz; reduces system power budget during frequent read/write bursts.

Pinout & Package

FM25V20A-PG uses an 8-pin plastic dual in-line package (PDIP) with 0.3-inch body width and through-hole mounting. Pin 1 is marked by notch or dot; Pin 4 (HOLD) and Pin 5 (DNU) are not internally connected and must be tied to VDD per design guidelines.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select input	Active-low enable: drives device into standby when HIGH; initiates SPI transaction on falling edge.
SO	Serial Output	Tri-state open-drain output; drives data on falling SCK edge during read/fast-read commands.
VSS	Ground reference	Primary return path for all internal circuitry; requires low-impedance connection to system GND plane.
WP	Write Protect input	Active-low hardware lock: disables Status Register writes when WPEN = 1 and WP = LOW.
HOLD	Pause control input	Active-low suspend: halts ongoing SPI transaction without deselecting CS; resumes on rising edge.
SCK	Serial Clock input	Synchronizes all I/O; inputs sampled on rising edge, outputs driven on falling edge; supports 0–25 MHz.
VDD	Power supply	2.0–3.6 V nominal; powers core logic and FRAM array; bypass capacitor (0.1 µF) required near pin.
SI	Serial Input	Accepts opcodes, addresses, and write data on rising SCK edge; may share trace with SO in single-wire mode.

Key Features

Feature	Design Value
No-delay writes	Eliminates polling loops and timeout handling in firmware; enables deterministic <1 μs write commit per byte.
Hardware write protection	WP pin physically blocks Status Register modification-critical for preventing accidental configuration loss.
SPI Mode 0 & 3 support	Interoperates with STM32, PIC, and NXP microcontrollers without clock-phase reconfiguration.
Device ID read capability	Manufacturer ID (0x01) and product ID (0x20) accessible via RDID command for automated BOM verification.
Low-power sleep mode	3 µA quiescent current enables battery-backed operation in portable data loggers for >10 years.

Applications

Industrial Data Logging

Smart Meter Calibration Storage

Use Scenario: Continuous timestamped sensor sampling (e.g., temperature, pressure) at 10–100 Hz in PLC backplanes.

IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory holding last-known state and incremental logs between host uploads.

Use Value: 10¹⁴ endurance prevents wear-out during 24/7 logging; zero-write-delay avoids data loss during power interruption.

Use Scenario: Storing metrology calibration coefficients and tamper-event timestamps in electricity/water meters.

IC Role / Device Role / Timing Role: Secure, long-retention configuration store accessed only during factory programming or field updates.

Use Value: 151-year data retention ensures compliance over full product lifecycle; hardware WP prevents runtime corruption.

Factory Automation Control Registers

Medical Device Parameter Backup

Use Scenario: Holding motion profile parameters, axis limits, and safety thresholds in CNC controllers and robotic arms.

IC Role / Device Role / Timing Role: Fast-access nonvolatile register bank updated dynamically during setup or maintenance mode.

Use Value: Sub-microsecond write latency enables real-time parameter adjustment without motion interruption or jitter.

Use Scenario: Preserving therapy settings, usage history, and fault logs in portable infusion pumps and diagnostic monitors.

IC Role / Device Role / Timing Role: Low-power, high-reliability backup memory retaining critical data during battery swaps or AC dropout.

Use Value: 3 µA sleep current extends battery life; RoHS-compliant PDIP package meets medical regulatory traceability 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
CY14V104N-SP	Same density (1 Mbit), but 4-Mbit variant CY14V104N-SP is pin-compatible; operates at 20 MHz max; uses same F-RAM process.	Lacks HOLD pin; supports only SPI Mode 0; no DNU pin-requires PCB redesign for pin mapping.	Select when lower cost and 20 MHz speed suffice; verify HOLD functionality is unused in target design.
AT25DF041A-SSH-T	4-Mbit serial flash; requires page erase before write; 100k endurance; 20-year retention at 25°C.	Introduces 25 ms erase latency and polling overhead; unsuitable for high-frequency write scenarios.	Acceptable only for infrequent configuration storage where write speed and endurance are non-critical.

Compared with CY14V104N-SP and AT25DF041A-SSH-T, FM25V20A-PG uniquely delivers deterministic write timing, 100 trillion-cycle endurance, and industrial-grade retention without compromising SPI compatibility or requiring firmware changes.

Availability

FM25V20A-PG is available at Aetrix Electronics and suitable for industrial data logging, smart meter calibration storage, and factory automation control registers requiring stable component supply across multi-year production cycles.

Supply support for FM25V20A-PG 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 manufacturer specializing in power management, automotive ICs, and reliable nonvolatile memory solutions.

The FM25V20A belongs to Infineon's F-RAM product line, engineered specifically for applications demanding rapid, high-endurance, low-power nonvolatile storage without flash-like latency or EEPROM wear limitations.

FAQ

Is FM25V20A-PG pin-compatible with standard SPI EEPROMs like AT25xxx series?

Yes-FM25V20A-PG uses identical PDIP-8 pinout (CS, SO, VSS, WP, HOLD, SCK, VDD, SI) and supports SPI Mode 0/3, enabling direct hardware replacement of AT25040B or similar EEPROMs without PCB changes. Command set differs slightly (e.g., no WREN before every write), so firmware must be updated to remove polling and erase routines.

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

Pin 5 is designated "Do Not Use" (DNU) and is not connected internally. Per Infineon's datasheet, it must be tied to VDD to ensure signal integrity and meet IDD specifications. Leaving it floating violates DC electrical characteristics and may cause unpredictable standby current or noise coupling.

Does FM25V20A-PG support quad-SPI or dual-SPI modes?

No-FM25V20A-PG supports only standard single-data-line SPI (SI/SO separate) in Mode 0 and Mode 3. It does not implement quad-I/O (QSPI) or dual-I/O protocols. The device lacks QIO, DIO, or extended instruction sets required for those interfaces.

How does the HOLD pin behave during an active SPI transaction?

The HOLD pin suspends SPI communication synchronously: when asserted LOW mid-transaction, SCK is ignored and SI/SO go tri-state, preserving internal state. On rising edge of HOLD, the device resumes exactly where it left off-no retransmission or restart is needed, making it ideal for interrupt-driven host systems.

FM25V20A-PG Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: F-RAM™

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

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:: Through Hole

Supplier Device Package:: 8-PDIP

FM25V20A-PG FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FM25V20A-PG?

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

Once your FM25V20A-PG 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-PG?

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

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

All FM25V20A-PG 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-PG meets industry standards.

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

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

Return procedure for FM25V20A-PG:

1.Submit a request within 90 days.

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

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