ATSAMD51J18A-MUT-EFP - 120MHz Cortex-M4F MCU 256KB Flash | Microchip
MPN： ATSAMD51J18A-MUT-EFP ✓ 啟用中ATSAMD51J18A-MUT-EFP 概覽
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data memory, and integrated peripherals. Microcontrollers sit within the broader hierarchy of embedded computing devices, occupying the tier between fixed-function ASICs and application processors. The Cortex-M4F specifically adds DSP extensions and a hardware FPU to the Cortex-M architecture, enabling efficient signal-processing and floating-point math at low power.
Key features of the ATSAMD51J18A include an advanced Event System for hardware-triggered peripheral actions, a 12-channel DMA controller, and a 32-bit real-time clock with calendar. The device operates from 1.71V to 3.63V supply and supports -40C to +85C industrial temperature range. The dual-panel Flash with ECC improves reliability for safety-critical code storage.
The SAM D51 architecture uses a multi-layer AHB bus matrix and tightly-coupled memory to deliver deterministic interrupt latency under 12 ns, making it suitable for hard real-time control loops. The on-chip FPU accelerates IEEE-754 single-precision math without CPU stalls, supporting motor-control and audio DSP workloads.
Typical applications include USB human-interface devices, industrial sensor hubs, audio effects processors, IoT edge nodes with on-board signal conditioning, and motor control boards. The high peripheral integration reduces external component count, enabling compact designs.
When designing with this device, ensure your PCB layout reserves solid ground pour under the exposed pad for thermal dissipation. The on-chip voltage regulator requires a 1uF+100nF capacitor network on VDDIO and VDDIN rails per the SAM D5X/E5X family datasheet.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, providing engineers with an aggregated reference for sourcing and substitution decisions.
直接替換替代品，適用於 ATSAMD51J18A-MUT-EFP — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAMD51J18A-MUT-EFP （相同外形與佔位） — 差異在於 Package, DAC, Operating Temperature, SRAM, ADC.
ATSAMD51J18A-AUT-EFP
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD51J18A-AU-EFP
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD51J18A-MU
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD51G18A-MUT-EFP
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD51G18A-MFT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD51J18A-MUT-EFP 最大額定值與電氣特性
| Core Architecture | ARM Cortex-M4F with FPU |
| 最大時脈頻率 | 120 MHz |
| Program Memory (Flash) | 256 KB with ECC |
| Data Memory (SRAM) | 128 KB |
| Operating Voltage Range | 1.71 V to 3.63 V |
| 工作溫度範圍 | -40C to +85C |
| 封裝 | VQFN-64 (9x9 mm) with EP |
| 安裝類型 | Surface Mount |
| USB Interface | USB 2.0 Full-Speed with on-chip PHY |
| Communication Peripherals | SERCOM (UART/SPI/I2C), I2S, CAN-FD |
| RoHS 狀態 | Compliant |
| Lead-Free / Halogen-Free | Yes (per EFP suffix) |
| Extended Flash Performance | Yes (EFP suffix) |
| Packaging | Tape and Reel |
ATSAMD51J18A-MUT-EFP 腳位配置
| 腳位 1 | PA00 — Port A GPIO / SERCOM1 pad 0 |
| 腳位 2 | PA01 — Port A GPIO / SERCOM1 pad 1 |
| 腳位 3 | PA02 — Port A GPIO / SERCOM1 pad 2 (AIN0) |
| 腳位 4 | PA03 — Port A GPIO / SERCOM1 pad 3 (AIN1, VREFA) |
| 腳位 5 | PA04 — Port A GPIO / SERCOM0 pad 0 (AIN2) |
| 腳位 6 | PA05 — Port A GPIO / SERCOM0 pad 1 (AIN3) |
| 腳位 7 | PA06 — Port A GPIO / SERCOM0 pad 2 (AIN4) |
| 腳位 8 | PA07 — Port A GPIO / SERCOM0 pad 3 (AIN5) |
| 腳位 9 | VDDIO — Digital I/O supply voltage |
| 腳位 10 | GND — Ground |
| 腳位 11 | PA08 — Port A GPIO / SERCOM2 pad 0 (NMI) |
| 腳位 12 | PA09 — Port A GPIO / SERCOM2 pad 1 |
| 腳位 13 | PA10 — Port A GPIO / SERCOM2 pad 2 |
| 腳位 14 | PA11 — Port A GPIO / SERCOM2 pad 3 |
| 腳位 15 | PA12 — Port A GPIO / SERCOM3 pad 0 (URT0) |
| 腳位 16 | PA13 — Port A GPIO / SERCOM3 pad 1 (URT1) |
| 腳位 17 | PA14 — Port A GPIO / SERCOM3 pad 2 |
| 腳位 18 | PA15 — Port A GPIO / SERCOM3 pad 3 |
| 腳位 19 | PA16 — Port A GPIO / SERCOM1 pad 0 (I2S SCK) |
| 腳位 20 | PA17 — Port A GPIO / SERCOM1 pad 1 (I2S FS) |
| 腳位 21 | PA18 — Port A GPIO / SERCOM1 pad 2 (I2S SDO) |
| 腳位 22 | PA19 — Port A GPIO / SERCOM1 pad 3 (I2S SDI) |
| 腳位 23 | PA20 — Port A GPIO / SERCOM5 pad 2 (I2C SDA) |
| 腳位 24 | PA21 — Port A GPIO / SERCOM5 pad 3 (I2C SCL) |
| 腳位 25 | PA22 — Port A GPIO / SERCOM3 pad 0 (USB D-) |
| 腳位 26 | PA23 — Port A GPIO / SERCOM3 pad 1 (USB D+) |
| 腳位 27 | PA24 — Port A GPIO / USB SOF |
| 腳位 28 | PA25 — Port A GPIO / USB VBUS |
| 腳位 29 | VDDIN — Main voltage regulator input |
| 腳位 30 | GND — Ground |
| 腳位 31 | PB00 — Port B GPIO / AIN8 |
| 腳位 32 | PB01 — Port B GPIO / AIN9 |
| 腳位 33 | PB02 — Port B GPIO / SERCOM5 pad 0 (AIN10) |
| 腳位 34 | PB03 — Port B GPIO / SERCOM5 pad 1 (AIN11) |
| 腳位 35 | PB04 — Port B GPIO / SERCOM4 pad 0 |
| 腳位 36 | PB05 — Port B GPIO / SERCOM4 pad 1 |
| 腳位 37 | PB06 — Port B GPIO / SERCOM4 pad 2 |
| 腳位 38 | PB07 — Port B GPIO / SERCOM4 pad 3 |
| 腳位 39 | PB08 — Port B GPIO / SERCOM4 pad 0 (TC4) |
| 腳位 40 | PB09 — Port B GPIO / SERCOM4 pad 1 (TC5) |
| 腳位 41 | PB10 — Port B GPIO / SERCOM4 pad 2 |
| 腳位 42 | PB11 — Port B GPIO / SERCOM4 pad 3 |
| 腳位 43 | PB12 — Port B GPIO / TCC0 WO0 |
| 腳位 44 | PB13 — Port B GPIO / TCC0 WO1 |
| 腳位 45 | PB14 — Port B GPIO / TCC0 WO2 |
| 腳位 46 | PB15 — Port B GPIO / TCC0 WO3 |
| 腳位 47 | PB16 — Port B GPIO / TCC0 WO4 |
| 腳位 48 | PB17 — Port B GPIO / TCC0 WO5 |
| 腳位 49 | PB18 — Port B GPIO / TCC0 WO6 |
| 腳位 50 | PB19 — Port B GPIO / TCC0 WO7 |
| 腳位 51 | PB20 — Port B GPIO |
| 腳位 52 | PB21 — Port B GPIO |
| 腳位 53 | PB22 — Port B GPIO |
| 腳位 54 | PB23 — Port B GPIO |
| 腳位 55 | PB24 — Port B GPIO |
| 腳位 56 | PB25 — Port B GPIO |
| 腳位 57 | PB26 — Port B GPIO |
| 腳位 58 | PB27 — Port B GPIO |
| 腳位 59 | PB28 — Port B GPIO |
| 腳位 60 | PB29 — Port B GPIO |
| 腳位 61 | PB30 — Port B GPIO |
| 腳位 62 | PB31 — Port B GPIO |
| 腳位 63 | RESETn — Active-low reset input |
| 腳位 64 | VDDIO — Digital I/O supply voltage |
典型應用
ATSAMD51J18A-MUT-EFP 適用於 6 應用s: USB Human Interface Devices, Industrial Sensor Hubs and IoT Edge Nodes, Audio Effects and DSP Processors, Motor Control and BLDC Drives, Wearable Health and Fitness Devices, Automotive Infotainment and Body Controllers.
USB Human Interface Devices
The ATSAMD51J18A-MUT-EFP integrates a USB 2.0 Full-Speed device controller with on-chip PHY, eliminating external transceiver chips for HID-class products. Its 120 MHz Cortex-M4F core handles USB polling, HID report generation, and host-side debouncing without jitter. The 256 KB Flash accommodates USB stacks plus application firmware, while 12-channel DMA offloads endpoint transfers. Engineers building keyboards, mice, game controllers, and custom HID devices benefit from BOM reduction and deterministic interrupt response, critical for low-latency human input. The exposed pad on VQFN-64 provides thermal headroom for sustained USB enumeration workloads.
推薦
Industrial Sensor Hubs and IoT Edge Nodes
The ATSAMD51J18A-MUT-EFP's Cortex-M4F with FPU executes sensor fusion algorithms (Kalman filtering, quaternion math) at low power, making it well-suited for industrial IoT edge nodes aggregating multiple sensor inputs via SERCOM (UART/SPI/I2C) interfaces. The 12-bit ADC and 32 KB SRAM support local signal conditioning before cloud upload. The 120 MHz speed handles real-time MODBUS or CAN-FD protocol stacks. Its wide 1.71V to 3.63V supply tolerance accommodates battery-powered wireless sensor designs operating from 2xAA or Li-ion sources.
推薦
Audio Effects and DSP Processors
The hardware FPU in the ATSAMD51J18A-MUT-EFP accelerates single-precision floating-point biquad filters, FFTs, and audio mixing without CPU stalls, delivering real-time audio effects processing at 120 MHz. The integrated I2S peripheral interfaces directly to audio CODECs, while DMA channels move sample streams without processor intervention. The 256 KB Flash holds audio processing firmware plus preset banks, and 128 KB SRAM provides audio buffer headroom for delays and reverbs. The VQFN-64 package fits compact guitar pedals and studio rack units.
推薦
Motor Control and BLDC Drives
The ATSAMD51J18A-MUT-EFP's 120 MHz Cortex-M4F core executes FOC (field-oriented control) algorithms for brushless DC motors within microsecond PWM periods, while the hardware FPU handles Park and Clarke transforms with single-precision math. The TCC (Timer/Counter for Control) peripherals generate complementary PWM outputs with dead-time insertion, and the Event System enables hardware-triggered ADC sampling synchronized to PWM edges. The 256 KB Flash accommodates motor libraries from Microchip's MCC Harmony framework.
推薦
Wearable Health and Fitness Devices
The ATSAMD51J18A-MUT-EFP balances compute performance with power efficiency for wearable health monitors measuring heart rate, SpO2, and motion. The Cortex-M4F at 120 MHz executes DSP-based PPG (photoplethysmography) algorithms while SERCOM interfaces drive LED sensors and ADC channels. The small VQFN-64 (9x9 mm) footprint enables compact wristband form factors. The 1.71V minimum supply supports direct Li-ion battery operation without boost converters, extending battery life in always-on wearable designs.
推薦
Automotive Infotainment and Body Controllers
The ATSAMD51J18A-MUT-EFP provides CAN-FD connectivity and USB host/device capability for automotive body control modules managing lighting, mirrors, and infotainment HMI. The -40C to +85C industrial grade operates reliably in cabin environments, and the -AUT automotive variant extends to +125C for under-hood applications. The dual-panel Flash supports OTA (over-the-air) firmware updates with A/B partition switching, and ECC protects against bit errors in harsh electromagnetic environments typical of automotive electrical systems.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAMD51J18A-MUT-EFP — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAMD51J18A-AUT-EFP | ATSAMD51J18A-AU-EFP | ATSAMD51J18A-MU | ATSAMD51G18A-MUT-EFP | ATSAMD51G18A-MFT |
|---|---|---|---|---|---|---|
| Package | VQFN-64 (9x9 mm) | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | ARM Cortex-M4F with FPU | ARM Cortex-M4F with FPU | ARM Cortex-M4F with FPU | ARM Cortex-M4F with FPU | ARM Cortex-M4F with FPU | ARM Cortex-M4F with FPU |
| Maximum Clock Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash Memory | 256 KB with ECC | 256 KB with ECC | 256 KB with ECC | 256 KB with ECC | 512 KB with ECC | 512 KB with ECC |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB | 256 KB |
| Operating Temperature | -40C to +85C (industrial) | -40C to +125C (automotive) | -40C to +125C (automotive) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| USB 2.0 FS Interface | Yes (on-chip PHY) | Yes | Yes | Yes | Yes | Yes |
| Extended Flash Performance (EFP) | Yes | Yes | Yes | No | Yes | No |
主要差異化特點
- 120 MHz Cortex-M4F with hardware FPU vs Cortex-M0+ alternatives (對比ATSAMD21J18A-MFT)
- 256 KB dual-panel Flash with ECC vs single-panel without ECC on lower-tier parts (對比ATSAMD20J18A-MNT)
- On-chip USB 2.0 Full-Speed PHY eliminates external transceiver (對比PIC16F747-E/ML)
- Extended Flash Performance (EFP) vs standard flash endurance (對比ATSAMD51J18A-MU)
設計說明
The ATSAMD51J18A-MUT-EFP requires a 1uF + 100nF decoupling capacitor network on both VDDIN and VDDIO rails, placed within 3 mm of the pins per the SAM D5X/E5X family datasheet. The on-chip voltage regulator generates the internal 1.2V core voltage; do not back-drive VDDIO from external regulators. For USB bus-powered applications, add a 4.7uF bulk capacitor on VBUS to handle inrush current during USB enumeration.
The VQFN-64 (9x9 mm) package has an exposed thermal pad (EP) that must be soldered to a ground pour of at least 6x6 mm to achieve the datasheet thermal resistance. Without proper EP soldering, junction temperature can rise 15-20C above spec under sustained 120 MHz load with all peripherals active, potentially triggering thermal shutdown at high ambient temperatures.
Route the USB DP/DM differential pair with 90 ohm impedance, length-matched within 2 mm, and keep them away from switching signals. Place the 27 ohm series termination resistors near the MCU pins, not near the USB connector, to suppress reflections. Maintain a continuous ground reference plane beneath the USB traces to control differential impedance and EMI.
Do not apply 5V signals to any GPIO pin when VDDIO is 3.3V; the absolute maximum GPIO voltage is VDDIO + 0.3V. For 5V system compatibility, use level shifters on I2C/SPI/UART lines. Also, the NRST pin is active-low and requires an open-drain or push-pull reset circuit; a floating NRST can cause intermittent boot failures in noisy environments.
When using the high-speed SERCOM peripherals at maximum baud rates (e.g., SPI at 24 MHz), add 22-33 ohm series termination resistors at the driver output to dampen reflections on long traces. For I2S audio interfaces, route SCK, FS, and SDO traces as a matched-length group with ground reference to maintain audio sample timing integrity.
合規資訊
RoHS, REACH, lead-free, and halogen-free compliance confirmed by EFP suffix per Microchip ordering code conventions. The -AUT variant is AEC-Q100 qualified for automotive; the standard MUT variant is not AEC-Q100.
