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            FCU · Flight control unit family
          

One flight-control platform, engineered to your spec. Two sizes, two microcontrollers.

Designed to MIL-STD-810 & MIL-STD-461. Choose the STM32H757 dual-core for proven flight-critical partitioning, or the STM32N657 single-core with an on-chip neural processing unit (NPU) for higher throughput and Gigabit Ethernet — in mFCU or µFCU footprints.

Request datasheet → Talk to engineering

            4 variants
            2 sizes
            2 MCUs
            MIL-STD-810 / 461
          

              FIG. FCU FAMILY — AVIONICS COMPUTERS
              ● REV A
            

              mFCU / µFCU · ISO VIEW
            

01 / Catalog family

Two sizes, two microcontrollers, four variants.

One architecture and firmware base spans the range — family members differ by board size and compute, not software.

Variant	Size	MCU	Compute	Ethernet	Notes
mFCU-H7	mFCU	STM32H757	Dual-core · M7 480 MHz + M4 240 MHz	100 Mbit	Full interface set
mFCU-N6	mFCU	STM32N657	Single-core M55 · 800 MHz + NPU	Gigabit	Higher throughput, on-chip NPU
µFCU-H7	µFCU (smaller)	STM32H757	Dual-core · M7 480 MHz + M4 240 MHz	100 Mbit	Reduced I/O, no analog input
µFCU-N6	µFCU (smaller)	STM32N657	Single-core M55 · 800 MHz + NPU	Gigabit	Reduced I/O, no analog input

Naming: [size]FCU-[MCU].

02 / Microcontroller options

Two cores, or one accelerated core with NPU — built to your spec.

Both options share the same board footprint, firmware toolchain and I/O map — pick the compute profile the mission needs. It's one example of how every platform is adapted to your specification, not sold as one fixed configuration.

SINGLE-DIE · DUAL-CORE

STM32H757

480 / 240 MHz

CORE · M7

Flight control

480 MHz · hard real-time

CORE · M4

I/O & mission

240 MHz · mission logic

SHARED SRAM  ◂——▸  HSEM INTER-CORE SEMAPHORES

100 Mbit ETHERNET

SINGLE-CORE · NPU-ACCELERATED

STM32N657

800 MHz

CORE · M55

Flight control & mission

800 MHz · single partition

NPU · NEURAL-ART

On-chip AI accel.

bonus · sensor fusion / vision-ready

HIGHER SINGLE-CORE CLOCK  ◂——▸  MORE THROUGHPUT THAN H7

GIGABIT ETHERNET

03 / Sensing & interfaces

Shared sensors, size-scaled I/O.

The same aerospace-grade sensor suite across the family — interface count and analog input scale with board size.

ACCEL / GYRO

ICM-42605

MAGNETOMETER

RM3100 · HSCDTD015A

BAROMETER

BMP581

LOG MEMORY

512 Mbit

STORAGE

microSD

DEBUG

Dual SWD

mFCU · INTERFACES

RS-4852× isolated

CAN2×

UART / I²Cmultiple

PWM8× isolated

ADC / analog inputyes

Ethernet100 Mbit / Gigabit (per MCU)

µFCU · INTERFACES

RS-4851× isolated

CAN1×

UART / I²Cmultiple

PWM4× isolated

ADC / analog input— not present

Ethernet100 Mbit / Gigabit (per MCU)

POWER · COMMON TO FAMILY

StandardMIL-STD-704, 28 V

Surge9–50 V

Operating9–36 V DC

Aux rails3× iso 5 V / 100 mA

Temp−40 → +55 °C

04 / Qualification

Tested to defense standards, built for harsh environments.

Method scope shown below is common across the family. Qualified levels and full results are provided in the relevant FCU datasheet.

MIL-STD-810 · ENVIRONMENTAL

500 · Altitudeper datasheet

501 / 502 · High / low tempper datasheet

503 · Temperature shockper datasheet

507 · Humidityper datasheet

514 · Vibrationper datasheet

516 · Shockper datasheet

MIL-STD-461 · EMI / EMC

CE102 · Conducted emissionsper datasheet

CS101 · Conducted susceptibilityper datasheet

CS114 / 115 / 116per datasheet

RE102 · Radiated emissionsper datasheet

RS103 · Radiated susceptibilityper datasheet

Isolation · All I/Ogalvanic

Request the FCU datasheet.

Specify board size (mFCU or µFCU) and MCU (H7 or N6) in your request — full pinouts, interface tables and the complete environmental & EMC qualification matrix.

Request datasheet → Talk to engineering