M1AFS250-1FG256 - 250K Gate Fusion FPGA, ARM Cortex-M1 | Microchip
MPN: M1AFS250-1FG256 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $145.55 | $145.55 |
| 10 | $138.62 | $1,386.20 |
| 100 | $131.69 | $13,169.00 |
| 500 | $124.76 | $62,380.00 |
| 1,000 | $117.83 | $117,830.00 |
Drop-in alternatives for M1AFS250-1FG256 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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M1AFS250-1FG256I
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View Datasheet →M1AFS250-FG256
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View Datasheet →M1AFS250-FGG256
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View Datasheet →M1AFS250-2FG256I
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View Datasheet →M1AFS250-2FGG256I
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View Datasheet →M1AFS250-1FGG256I
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View Datasheet →M1AFS600-1FGG256
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$191.1 / Unit
View Datasheet →M1AFS250-1FG256 Maximum Ratings & Electrical Characteristics
| Family | Fusion (M1 series, mixed-signal FPGA) |
| System Gates | 250000 gates |
| Processor Core | ARM Cortex-M1 |
| User I/O | 114 |
| User Flash Memory | 36864 bits |
| Core Supply Voltage | 1.5 V |
| Technology | 130 nm flash-based |
| Maximum Performance | 1282.05 MHz (per FindIC spec summary) |
| Configuration | Flash-based, live at power-up |
| Security | 128-bit flash lock, AES decryption |
| Package | 256-LBGA (FG256) |
| Mounting Type | Surface Mount |
| Analog Blocks | Integrated configurable analog (Fusion) |
| Clock Management | Integrated clock generation and management circuitry |
M1AFS250-1FG256 256-lbga (fg256) Pin Configuration Guide
Complete pinout information for M1AFS250-1FG256 (256-lbga (fg256) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for M1AFS250-1FG256.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
M1AFS250-1FG256 is suitable for 6 applications: Industrial Automation and Motor Control, Aerospace and Defense Embedded Control, Power Supply Monitoring and Management, Secure IoT Edge Nodes, Test and Measurement Instrumentation, Medical Device Control Electronics.
Industrial Automation and Motor Control
The M1AFS250-1FG256 fits industrial automation because it merges 250K gates of flash-based logic for PWM generation and interlock sequencing with an ARM Cortex-M1 processor running the control firmware, all in one 256-ball FG256 device. Its integrated configurable analog blocks monitor bus voltage and motor current directly, reducing the external AFE chip count. Flash configuration is live at power-up, so drives and PLC I/O modules boot instantly without a configuration PROM - critical for equipment that must resume within milliseconds of a power event. The trade-off versus a discrete MCU plus CPLD stack is a 1.5V core rail requirement and BGA layout complexity, offset by a single-device BOM and the 128-bit flash lock with AES decryption that protects proprietary motion-control IP on the factory floor.
Recommended
Aerospace and Defense Embedded Control
Defense and aerospace embedded controllers benefit from the M1AFS250-1FG256's security posture: configuration data lives in on-chip flash secured by a 128-bit flash-based lock and industry-leading AES decryption, so there is no external bitstream to intercept or clone. The ARM Cortex-M1 core runs application firmware while 250K gates of fabric implement custom interfaces, telemetry framing, and sensor-fusion logic; the integrated analog blocks condition voltage and current telemetry without a separate monitor IC. Instant-on flash configuration matters for systems with strict time-to-ready requirements after power application. Engineers should note the commercial temperature grade of the base part - the M1AFS250-1FG256I industrial variant is the drop-in for extended-temperature programs, and Microsemi/Microchip heritage makes this family common in avionics subsystem designs.
Recommended
Power Supply Monitoring and Management
The Fusion family was explicitly designed for power-management boards: the M1AFS250-1FG256's configurable analog blocks provide on-chip voltage and temperature monitoring across multiple rails, while the ARM Cortex-M1 implements sequencing policies and PMBus-style communication in firmware. With 250K gates of fabric, custom fault-response logic - such as fast overshoot latching and channel group arbitration - executes in hardware with deterministic timing that pure MCU solutions cannot match. Flash-based configuration is live as soon as system power is applied, meaning the supervisor itself never has a blind boot window, and the 128-bit flash lock plus AES decryption protects management IP. The 256-ball FG256 package concentrates 114 I/Os for dense multi-rail backplanes; plan a clean 1.5V core rail and adequate BGA escape routing.
Recommended
Secure IoT Edge Nodes
For industrial IoT edge nodes that must protect firmware and data, the M1AFS250-1FG256 offers hardware-rooted trust: the configuration bitstream never leaves the chip, secured by a 128-bit flash lock and AES decryption, defeating casual readback and cloning attacks. The ARM Cortex-M1 runs protocol stacks and application code while 250K gates accelerate custom encryption, sensor preprocessing, or deterministic I/O timing. The integrated analog blocks track board health (voltage, temperature) without extra sensors, and instant-on flash configuration suits battery-backed or frequently power-cycled nodes. At $138.62 single-piece pricing (as of 2026-09-02), it targets professional deployments rather than consumer IoT, where its single-chip consolidation of MCU, FPGA, analog monitoring, and security replaces a multi-IC stack and shrinks the attack surface of the bill of materials.
Recommended
Test and Measurement Instrumentation
Benchtop and rack instruments use the M1AFS250-1FG256 as a flexible control and acquisition hub: the ARM Cortex-M1 manages user interfaces and communication while 250K gates of fabric implement triggering engines, custom bus interfaces, and timing generators with hardware-level determinism. Integrated clock generation and management circuitry simplifies the timing tree, and the configurable analog blocks provide rail monitoring for self-diagnostic reporting. Live-at-power-up flash configuration means the instrument's control plane is available within milliseconds of the power switch - no configuration-load delay during boot sequences that customers perceive as slow startup. The 114 user I/Os on the 256-ball FG256 footprint support dense backplane interconnect. Use the M1AFS600 in the same footprint when acquisition logic outgrows 250K gates without a PCB respin.
Recommended
Medical Device Control Electronics
Portable diagnostic and therapy devices leverage the M1AFS250-1FG256's single-chip integration to shrink control electronics: the ARM Cortex-M1 executes the device application and safety monitors, flash fabric implements motor driver sequencing and deterministic interlocks, and the analog blocks track battery voltage and internal temperature for compliance logging. Instant-on flash configuration keeps time-to-ready short for handheld instruments, and the 128-bit flash lock with AES decryption protects calibration data and proprietary algorithms from extraction. The 1.5V core plus 114 I/Os support dense sensor front-ends on compact boards. Designers should budget for BGA rework capability in production and verify the commercial temperature grade against sterilization or storage requirements, selecting the M1AFS250-1FG256I industrial variant where extended margins are prudent.
Recommended
Recommended Products Summary
Engineering reference data for M1AFS250-1FG256 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M1AFS250-1FG256I | M1AFS250-2FG256I | M1AFS600-1FGG256 |
|---|---|---|---|---|
| Package | 256-LBGA (FG256) | 256-LBGA (FG256) - same | 256-LBGA (FG256) - same | 256-LBGA (FG256) - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 250K | 250K | 250K | 600K |
| Processor Core | ARM Cortex-M1 | ARM Cortex-M1 | ARM Cortex-M1 | ARM Cortex-M1 |
| User I/O | 114 | 114 | 114 | 114 |
| Speed Grade | -1 (standard) | -1 (standard) | -2 (faster timing) | -1 (standard) |
| Temperature Grade | Commercial | Industrial | Industrial | Commercial |
| Security | 128-bit flash lock + AES | 128-bit flash lock + AES | 128-bit flash lock + AES | 128-bit flash lock + AES |
Key Differentiators
- Single-chip mixed-signal integration with ARM Cortex-M1 (vs M1AFS600-1FGG256)
- Industrial temperature drop-in option (vs M1AFS250-1FG256I)
- Instant-on flash configuration with AES security (vs SRAM-based FPGAs requiring external boot flash)
Design Notes
The M1AFS250-1FG256 requires a 1.5V core supply per FindIC specification data. Design a dedicated low-noise 1.5V rail with adequate decoupling - place bulk capacitance near the ball-map VCore pins and 0.1uF ceramics at each supply ball. Because flash-based Fusion devices draw configuration power only at programming, steady-state core current is dominated by fabric utilization; simulate power in Libero SoC SmartPower before sizing the regulator. Estimated: a 250K-gate design at moderate toggle rates typically stays within a low-watt envelope, but verify against your utilization.
The 256-ball LBGA requires escape routing on at least two signal layers with via-in-pad or dog-bone fanout. Follow the manufacturer datasheet ball-map exactly - per the Fusion datasheet, all devices in the same package are pin compatible (except the PQ208 AFS250/AFS600 exception), so a footprint designed for this part also accepts the M1AFS600-1FGG256 upgrade without respin. Keep analog monitoring inputs on quiet ground regions, and provide fiducials for BGA assembly inspection.
Do not assume a bitstream on external flash is needed - this device is flash-based and live at power-up; adding an external configuration PROM wastes BOM cost. Do program the 128-bit flash lock and enable AES decryption before production, or programmed IP remains readable until the lock is set. When migrating between speed grades or temperature grades, re-run static timing analysis in Libero SoC, since -2 grade timing constraints differ from -1.
Compliance Information
The provided web data does not state RoHS/REACH status for the base FG256 part. Lead-free (GG suffix) variants such as M1AFS250-FGG256 and M1AFS250-1FGG256I exist in the same family for RoHS-required designs. Verify compliance on the Microchip product page before export.