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

Infineon Technologies FM25L16B-DGTR

Name: FM25L16B-DGTR
Brand: Infineon Technologies
SKU: FM25L16B-DGTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FM25L16B-DGTR

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-WDFN Exposed Pad

Datasheet:: FM25L16B-DGTR.pdf

Description:: IC FRAM 16KBIT SPI 20MHZ 8DFN

Quantity:: RFQ Add To RFQ list

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Inventory:7,474

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Product details

Overview

FM25L16B-DGTR from Infineon Technologies (formerly Cypress) is a 16-Kbit serial SPI F-RAM organized as 2K × 8, operating at up to 20 MHz with no write delay, 10¹⁴ read/write endurance, and 151-year data retention. It serves as a hardware-compatible nonvolatile memory replacement for serial EEPROM and flash in real-time data logging systems requiring deterministic writes.

For engineers reviewing the FM25L16B-DGTR datasheet, FM25L16B-DGTR pinout, FM25L16B-DGTR application, or FM25L16B-DGTR equivalent, key selection criteria include write-cycle latency, SPI mode 0/3 compatibility, industrial temperature range (–40 °C to +85 °C), VDD = 2.7–3.6 V operation, and hardware/software write protection support.

Technical Context

The FM25L16B-DGTR implements ferroelectric memory array architecture enabling true byte-level random access with zero write latency-no internal erase or program cycles required. Its SPI interface supports dual modes (0 and 3), with data latched on SCK rising edge and output on falling edge, ensuring timing compatibility with standard microcontroller SPI peripherals.

Write protection is implemented via three independent mechanisms: hardware WP pin control (active-low), software WREN/WRDI instructions, and configurable block protection (1/4, 1/2, or full array) managed through a 3-bit nonvolatile status register. The device contains no internal power management beyond POR circuitry-VDD stability is system-responsible.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory size	16 Kbit (2,048 × 8 bytes); enables compact firmware parameter storage without page management overhead
Interface	SPI slave, modes 0 and 3; direct drop-in replacement for legacy SPI EEPROM/flash without firmware rework
Max clock frequency	20 MHz; supports ≤50 ns per bit transfer, enabling sub-10 µs single-byte writes at bus speed
Endurance	10¹⁴ read/write cycles; sustains >27,000 writes/sec continuously for 10+ years in high-frequency telemetry nodes
Data retention	151 years at +85 °C; eliminates periodic refresh or backup power requirements in sealed industrial enclosures
Supply voltage	2.7 V to 3.6 V; compatible with 3.3 V logic domains and brown-out tolerant across wide input ranges
Operating temperature	–40 °C to +85 °C; qualified for deployment in motor drives, PLC I/O modules, and outdoor metering hardware

Pinout & Package

FM25L16B-DGTR is supplied in an 8-pin DFN package (3 mm × 2 mm, 0.5 mm pitch) with exposed pad (non-connected). Pin functions are electrically identical to the SOIC variant but optimized for space-constrained PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select input	Active-low enable; must fall before each opcode; places device in standby (3 µA) when HIGH
SCK	Serial clock input	Synchronizes all I/O; rising edge latches SI, falling edge drives SO; supports 0–20 MHz with arbitrary pauses
SI	Serial input	Receives opcodes, addresses, and write data; sampled only on SCK rising edge; requires valid logic level at all times
SO	Serial output	Drives read data and status bits; tristated during HOLD LOW or CS HIGH; transitions on SCK falling edge
WP	Write protect input	Hardware lock for status register writes when WPEN=1; must be tied to VDD if unused
HOLD	Operation suspend input	Pauses ongoing read/write mid-transfer when LOW; requires SCK=LOW during transition; tied to VDD if unused
VSS	Ground	Reference return path for all signals and power; must connect to system ground plane
VDD	Power supply	Core supply input; powers internal logic and F-RAM array; requires local 100 nF decoupling

Key Features

Feature	Design Value
NoDelay™ write architecture	Eliminates polling and timeout loops-data commits immediately after final bit shift, enabling deterministic real-time logging
Ferroelectric memory process	Delivers 100 trillion write cycles without wear leveling or block management, unlike flash or EEPROM
Dual SPI mode support	Interoperates with both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) controllers without configuration changes
Three-tier write protection	Combines pin-level (WP), instruction-level (WREN/WRDI), and address-range (status register) locking for robust firmware safety
Low-power active operation	200 µA typical current at 1 MHz SPI clock-enables battery-powered sensor nodes with multi-year runtime

Applications

Industrial Data Logger

Smart Energy Meter

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

IC Role / Device Role / Timing Role: Nonvolatile scratchpad storing last known state and incremental logs; accessed via SPI burst reads/writes.

Use Value: Zero-latency writes prevent data loss during unexpected power-down; 151-year retention ensures calibration history integrity across product lifetime.

Use Scenario: Storing tariff schedules, consumption counters, and tamper-event timestamps in DIN-rail electricity meters.

IC Role / Device Role / Timing Role: Secure, high-endurance parameter store interfaced to metrology SoC via dedicated SPI bus.

Use Value: 10¹⁴ cycle endurance supports daily billing writes for >270 years; hardware WP prevents accidental register corruption.

PLC I/O Module

Medical Diagnostic Device

Use Scenario: Retaining configuration settings, fault logs, and calibration offsets in modular programmable logic controller bases.

IC Role / Device Role / Timing Role: Configuration EEPROM replacement with guaranteed write completion under 1 µs for deterministic scan-cycle timing.

Use Value: Eliminates SPI bus blocking during writes-preserves 1 ms I/O update deadlines even during concurrent firmware updates.

Use Scenario: Capturing diagnostic waveforms (ECG, EEG) and patient session metadata in portable clinical analyzers.

IC Role / Device Role / Timing Role: Buffer memory for pre-trigger capture and post-acquisition metadata tagging prior to SD card transfer.

Use Value: Sub-microsecond write commit enables reliable 10 kHz waveform sampling without DMA stalls or buffer overflow.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT25DF041A-SSH-T	4-Mbit SPI flash; requires 25 ms page program time; 100k write cycles; no hardware WP pin	Acceptable where infrequent configuration updates occur; unsuitable for high-frequency logging	Select only if cost sensitivity outweighs write latency and endurance requirements
BR24G16NUX-10	16-Kbit I²C EEPROM; 1 MHz max clock; 1M write cycles; 40-year retention at 85 °C	Compatible in space-constrained designs with I²C buses; slower than SPI and lower endurance	Choose when existing I²C infrastructure exists and write frequency remains <100 Hz

Compared with AT25DF041A-SSH-T and BR24G16NUX-10, FM25L16B-DGTR uniquely delivers bus-speed writes, 100× higher endurance, and longer retention-making it the sole viable option for applications demanding sub-microsecond write commit and >100 kwrites/day.

Availability

FM25L16B-DGTR is available at Aetrix Electronics and suitable for industrial data loggers, smart energy meters, PLC I/O modules, and medical diagnostic devices requiring stable component supply across extended production lifecycles.

Supply support for FM25L16B-DGTR 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, sensing, connectivity, and memory solutions for industrial, automotive, and IoT markets.

The FM25L16B-DGTR belongs to Infineon's F-RAM product line, engineered specifically to replace serial EEPROM and flash in applications where write latency, endurance, and data reliability are critical system constraints.

FAQ

Is FM25L16B-DGTR pin-compatible with standard 8-pin SOIC SPI EEPROMs?

Yes-FM25L16B-DGTR shares identical pinout, signal definitions, and electrical characteristics with industry-standard 8-pin SOIC SPI EEPROMs (e.g., AT25xxx series), including CS, SCK, SI, SO, WP, and HOLD. The DFN variant maintains functional equivalence while reducing footprint by 60%.

Does FM25L16B-DGTR require special initialization or firmware drivers?

No-FM25L16B-DGTR uses standard SPI opcodes (0x02 write, 0x03 read, 0x06 WREN, 0x04 WRDI) and responds identically to legacy EEPROMs at the protocol level. Existing SPI drivers require only minor timing adjustments to accommodate its faster 20 MHz capability.

Can the HOLD pin be left unconnected in low-pin-count designs?

No-the HOLD pin must be tied to VDD if unused, per datasheet requirement. Leaving it floating risks unintended suspension of memory operations due to noise coupling, potentially corrupting partial writes or reads during critical system states.

What is the impact of disabling the WP pin on write protection functionality?

When WP is tied to VDD (disabled), only software-based protection remains active-requiring explicit WREN instruction before each write and status register configuration. Hardware lock of the status register is forfeited, increasing vulnerability to accidental writes during firmware updates or interrupt service routines.

FM25L16B-DGTR 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:: 16Kbit

Memory Organization:: 2K x 8

Memory Interface:: SPI

Clock Frequency:: 20 MHz

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: 2.7V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN (4x4.5)

FM25L16B-DGTR FAQ

1.How can I place an order for FM25L16B-DGTR through Aetrix?

Please submit a Request for Quotation (RFQ) for FM25L16B-DGTR 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 FM25L16B-DGTR reliable?

The price and inventory of FM25L16B-DGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FM25L16B-DGTR is usually 5 days.

3.What payment methods are accepted for FM25L16B-DGTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FM25L16B-DGTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FM25L16B-DGTR?

FM25L16B-DGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FM25L16B-DGTR 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 FM25L16B-DGTR?

For technical support, including FM25L16B-DGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FM25L16B-DGTR requirements.

6.How does Aetrix verify that FM25L16B-DGTR is sourced from the original manufacturer or authorized distributors?

All FM25L16B-DGTR 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 FM25L16B-DGTR meets industry standards.

7.What is the process for return or replacement of FM25L16B-DGTR?

All FM25L16B-DGTR units undergo pre-shipment inspection (PSI). If there is an issue with FM25L16B-DGTR, 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 FM25L16B-DGTR part is unused and in its original packaging.

Return procedure for FM25L16B-DGTR:

1.Submit a request within 90 days.

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

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