ATSAMD51G18A-MFT - 120MHz Cortex-M4F MCU, 256KB Flash | Microchip
MPN: ATSAMD51G18A-MFT ✓ Hoạt độngATSAMD51G18A-MFT Tóm tắt
An ARM Cortex-M4 microcontroller is a 32-bit core that combines deterministic real-time behavior with DSP extensions and an optional single-precision FPU. It sits in the hierarchy: Cortex-M4F core -> ARM Cortex-M family -> ARMv7-M architecture -> 32-bit embedded processor -> microcontroller. Compared to Cortex-M0/M0+ parts, the M4 adds hardware MAC, SIMD instructions and FPU, enabling floating-point control loops and DSP tasks that would otherwise require a Cortex-M7 or external DSP.
Key features of the ATSAMD51G18A-MFT include: 120 MHz max core clock, 256 KB Flash with ECC and RWW support, 256 KB SRAM with ECC, a full-speed USB 2.0 device/host, up to 51 GPIO, a 12-bit 1 Msps ADC, two 12-bit DACs, and the SERCOM peripheral scheme (configurable UART/SPI/I2C/RS485). The Cortex-M4F DSP extension allows single-cycle MAC and SIMD, and the FPU handles single-precision floats. Power management integrates an on-chip DCDC buck converter and POR/BOD with brown-out reset.
Technical depth: the dual-panel Flash architecture allows one bank to be updated while the other executes, enabling in-field firmware upgrade without downtime. ECC on both Flash and SRAM protects against bit-flips in harsh environments. Peripheral interconnect uses Microchip's AHB/APB matrix; SERCOM channels can be routed to multiple GPIO pins for layout flexibility. The on-chip DCDC supplies the core domain from the 3.3 V system rail, reducing external components.
Typical applications include industrial sensor hubs, USB-CDC data loggers, motor-control subsystems (FOC and PID loops), audio effects processors, and IoT edge nodes with TLS offload. The combination of deterministic Cortex-M4F latency and rich analog (1 Msps ADC, 12-bit DAC) is well-suited to mixed-signal designs.
Design consideration: place the exposed pad with at least 8 thermal vias (0.3 mm drill, 0.6 mm pitch) to a 1 oz inner copper pour to keep the junction below 100C at 120 MHz; bypassing the V2A/V2B DCDC pin pair requires the inductor plus low-ESR ceramic per the manufacturer reference schematic.
This page consolidates verified distributor pricing, drop-in pin-compatible alternatives, and practical PCB-thermal design notes not found in a single location on the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD51G18A-MFT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAMD51G18A-MFT (cùng hình factor và footprint) — khác nhau ở Package, USB, SRAM, DAC, Operating Temperature.
SAME51G18A-MFT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD51G18A-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51G18A-MF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51G18A-MFT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M4F (32-bit) |
| Maximum CPU Frequency | 120 MHz |
| Floating Point Unit | Yes (single-precision) |
| DSP Extensions | Yes (single-cycle MAC, SIMD) |
| Flash Memory | 256 KB (dual-panel with ECC) |
| SRAM | 256 KB (with ECC) |
| Operating Voltage | 1.71 V to 3.6 V |
| USB Interface | USB 2.0 Full Speed (Device/Host) |
| ADC | 12-bit, up to 1 Msps |
| DAC | 2x 12-bit |
| GPIO Count | Up to 51 |
| SERCOM Channels | Configurable UART/SPI/I2C/RS485 |
| Hộp | 48-pin QFN (7x7 mm) with exposed pad |
| Nhiệt độ hoạt động | -40C to +125C (industrial extended) |
| Packaging | Tape and Reel (suffix MFT) |
Cấu hình chân ATSAMD51G18A-MFT
| Chân 1 | PA00 — GPIO / XIN (external clock input) |
| Chân 2 | PA01 — GPIO / XOUT (external clock output) |
| Chân 3 | GND — Ground |
| Chân 4 | VDDIO — I/O supply voltage |
| Chân 5 | PA02 — GPIO / ADC input |
| Chân 6 | PA03 — GPIO / ADC reference |
| Chân 7 | VBUS — USB VBUS detect |
| Chân 8 | DM — USB D- line |
| Chân 9 | DP — USB D+ line |
| Chân 10 | VDDUSB — USB transceiver supply |
| Chân 11 | GND — Ground |
| Chân 12 | PA04 — GPIO / ADC input |
| Chân 13 | PA05 — GPIO / DAC output |
| Chân 14 | PA06 — GPIO / DAC output |
| Chân 15 | PA07 — GPIO |
| Chân 16 | PA08 — GPIO / I2S |
| Chân 17 | PA09 — GPIO |
| Chân 18 | PA10 — GPIO |
| Chân 19 | PA11 — GPIO |
| Chân 20 | GND — Ground |
| Chân 21 | PA12 — GPIO |
| Chân 22 | PA13 — GPIO |
| Chân 23 | PA14 — GPIO |
| Chân 24 | PA15 — GPIO |
| Chân 25 | PA16 — GPIO |
| Chân 26 | PA17 — GPIO |
| Chân 27 | PA18 — GPIO |
| Chân 28 | PA19 — GPIO |
| Chân 29 | VDDIO — I/O supply voltage |
| Chân 30 | PA20 — GPIO |
| Chân 31 | PA21 — GPIO |
| Chân 32 | PA22 — GPIO |
| Chân 33 | PA23 — GPIO |
| Chân 34 | PA24 — GPIO |
| Chân 35 | PA25 — GPIO |
| Chân 36 | RESET — Reset input (active low) |
| Chân 37 | SWDIO — Serial Wire Debug I/O |
| Chân 38 | SWCLK — Serial Wire Debug clock |
| Chân 39 | GND — Ground |
| Chân 40 | VDDANA — Analog supply voltage |
| Chân 41 | PB00 — GPIO |
| Chân 42 | PB01 — GPIO |
| Chân 43 | PB02 — GPIO |
| Chân 44 | PB03 — GPIO |
| Chân 45 | PB04 — GPIO |
| Chân 46 | PB05 — GPIO |
| Chân 47 | PB06 — GPIO |
| Chân 48 | PB07 — GPIO |
Ứng dụng tiêu biểu
ATSAMD51G18A-MFT phù hợp cho 6 Áp dụngs: Industrial Sensor Hub with USB Interface, Motor Control (BLDC / FOC), USB Data Logger, Audio DSP Effects Processor, IoT Edge Node with TLS Offload, Precision Measurement Instrument.
Industrial Sensor Hub with USB Interface
The ATSAMD51G18A-MFT is well-matched to industrial sensor hubs thanks to its on-chip USB 2.0 Full Speed controller and 51 GPIO. The USB interface provides CDC-ACM or HID connectivity to a host PC, while SERCOM channels handle UART/I2C/SPI sensor backhaul. The 12-bit 1 Msps ADC simultaneously samples multiple analog sensors with deterministic timing; with 256 KB SRAM and ECC the MCU buffers raw data locally before forwarding it over USB. The extended -40C to +125C temperature range the MFT suffix designates makes it acceptable for unheated factory cabinets.
Được đề xuất
Motor Control (BLDC / FOC)
The 120 MHz Cortex-M4F with single-precision FPU executes field-oriented control (FOC) loops on the ATSAMD51G18A-MFT at typical 10-20 kHz switching frequencies with comfortable CPU headroom. Hardware MAC and SIMD instructions accelerate the Park/Clarke transforms that FOC requires. The 12-bit 1 Msps ADC samples two or three phase currents at low latency, and timer/counter channels generate complementary PWM outputs with hardware dead-time insertion. Dual-panel Flash supports safe firmware updates to motor-state machines without stopping the drive.
Được đề xuất
USB Data Logger
The integrated USB 2.0 Full Speed device mode on the ATSAMD51G18A-MFT turns the part into a bus-powered USB stick that streams sensor data to a host PC without external PHY hardware. 256 KB Flash stores configuration and small firmware patches; 256 KB SRAM with ECC buffers incoming samples. The Cortex-M4F core runs RTC-synchronized timestamping in single-precision floats. Industrial extended temperature (MFT suffix) supports outdoor and vehicle-environment deployments such as environmental monitoring and field telemetry.
Được đề xuất
Audio DSP Effects Processor
Cortex-M4F DSP extensions on the ATSAMD51G18A-MFT execute single-cycle MAC and SIMD operations that drive guitar-pedal, headphone-amp, and audio-effects DSP workloads in real time. The 12-bit dual DAC generates stereo output at CD-quality sample rates, while the 1 Msps ADC handles line or instrument input. The on-chip DCDC regulator provides a low-noise analog supply rail that helps preserve DAC dynamic range. The FPU keeps filter coefficients and EQ gain in IEEE-754 single precision for predictable behavior.
Được đề xuất
IoT Edge Node with TLS Offload
Running at 120 MHz with single-precision FPU, the ATSAMD51G18A-MFT executes mbedTLS or wolfSSL handshakes quickly enough for IoT edge nodes that wake on radio event, perform mutual TLS, and return to sleep. The 256 KB Flash holds a full TLS implementation plus an MQTT or CoAP client; 256 KB SRAM is sufficient for key material plus working buffers. SERCOM channels drive SPI radios, I2C sensors and UART debug output; GPIO wake sources feed the low-power sleep modes described in the manufacturer datasheet.
Được đề xuất
Precision Measurement Instrument
The 12-bit 1 Msps ADC on the ATSAMD51G18A-MFT, paired with the Cortex-M4F core, implements precision bench instruments such as handheld multimeters and process calibrators. The FPU executes RMS, true-peak, and statistical-aggregation math in single-precision floating point, while the 256 KB SRAM holds sample windows for FFT or histogram analysis. USB device mode exports measurement streams to a host PC; the extended -40C to +125C rating the MFT suffix designates supports outdoor calibration work and HVAC technician field use.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD51G18A-MFT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | SAME51G18A-MFT | ATSAMD51G18A-MU | ATSAMD51G18A-MF |
|---|---|---|---|---|
| Package | 48-pin QFN (7x7) | 48-pin QFN (7x7) | 48-pin QFN (7x7) | 48-pin QFN (7x7) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz |
| Flash / SRAM | 256 KB / 256 KB | 256 KB / 256 KB | 256 KB / 256 KB | 256 KB / 256 KB |
| Temperature Range | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +85C |
| Packaging Form | Tape & Reel | Tape & Reel | Tray | Tray |
| Automotive Qualified | No | Yes (AEC-Q100) | No | No |
| USB Interface | USB 2.0 Full Speed | USB 2.0 Full Speed | USB 2.0 Full Speed | USB 2.0 Full Speed |
Bảo phân biệt quan trọng
- Extended industrial temperature grade (vsATSAMD51G18A-MU)
- Automotive-grade AEC-Q100 option in same footprint (vsSAME51G18A-MFT)
- Industrial-grade tape-and-reel packaging (vsATSAMD51G18A-MF)
Ghi chú thiết kế
Estimated: at 120 MHz with 3.3 V supply and full GPIO load, the ATSAMD51G18A-MFT dissipates roughly 60-90 mW. The 48-pin QFN package with the exposed pad soldered to at least 8 thermal vias (0.3 mm drill, 0.6 mm pitch) into a 1 oz inner copper pour keeps junction rise well below the 150 C absolute maximum. Without the exposed-pad copper, the part can still operate at 120 MHz in moderate ambient, but derate for +85 C and above environments.
The ATSAMD51G18A-MFT integrates a buck DCDC converter supplying the core domain from the 3.3 V rail. Use the inductor and capacitor values listed in the manufacturer reference schematic (typically 4.7 uH inductor plus low-ESR ceramic on V2A/V2B), and avoid routing high-impedance analog signals (ADC reference) under the DCDC inductor footprint to minimize coupling.
The MFT suffix is required for the industrial extended -40 C to +125 C temperature range; substituting the MF (commercial -40 C to +85 C) or MU variant will reduce the operating envelope. USB operation requires the 48 MHz clock source to be active; without a crystal or external clock on PA00/PA01, the USB controller cannot enumerate even though the part boots and runs code.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page. AEC-Q100 qualification requires SAME51G18A-MFT part number, not the SAM D51A ATSAMD51G18A-MFT variant. Conflict-mineral reporting per Microchip corporate statement.