ATSAMD51J18A-MUT - 120MHz Cortex-M4F MCU, 256KB Flash | Microchip
MPN: ATSAMD51J18A-MUT ✓ Hoạt độngATSAMD51J18A-MUT Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. The SAM D51 family in particular sits within Microchip's high-performance 32-bit MCU portfolio, positioned above the Cortex-M0+ based SAM D20/D21 lines and below the Cortex-M7 based SAME70/SAMS70 families. It targets applications that need DSP-class math throughput, deterministic real-time control, and substantial connectivity without jumping to a Linux-capable application processor.
Key features of the ATSAMD51J18A include the Cortex-M4F core running up to 120 MHz with single-cycle MAC and single-precision FPU, 256 KB dual-panel Flash supporting live updates, 128 KB SRAM with ECC for safety, and a configurable SERCOM peripheral set providing up to six flexible serial interfaces (each can be I2C, SPI, or USART). The device also integrates a 12-bit 1 Msps ADC, two 12-bit DACs, and a high-speed USB 2.0 Full-Speed interface with on-chip PHY. Operating voltage ranges from 1.71 V to 3.6 V, with an industrial temperature grade suitable for commercial and industrial environments.
Typical applications include industrial motor control, human-machine interface (HMI) panels, smart energy metering, USB-C peripherals, audio processing front-ends, and IoT edge nodes. The Cortex-M4F DSP instructions accelerate algorithms such as FFTs, FIR filters, and PID control loops, while the integrated USB and SERCOM peripherals simplify connectivity to sensors, displays, and host systems. The 9x9 mm VQFN footprint with 0.5 mm pitch is compatible with the rest of the SAM D51 64-pin pinout family.
When designing with this MCU, ensure the VDDCORE pin is decoupled per datasheet recommendations and that the on-chip voltage regulator's inductor is correctly selected. Programming is supported through the SWD interface using Microchip's MPLAB X IDE, Atmel Studio legacy projects, and the SAMD51 core support in the Arduino and PlatformIO ecosystems, enabling rapid prototyping.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD51J18A-MUT — 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 ATSAMD51J18A-MUT (cùng hình factor và footprint) — khác nhau ở Package, USB, SRAM, Operating Temperature, SERCOM.
ATSAMD51J19A-MUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J20A-MUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J18A-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J18A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J18A-MUT Tỷ lệ tối đa & tính chất điện
| Series | SAM D51 |
| Core Processor | ARM Cortex-M4F |
| Core Size | 32-Bit |
| Maximum Clock Speed | 120 MHz |
| Program Memory Size | 256 KB (256K x 8) Flash |
| Điện áp cung cấp | 1.71 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Hộp | 64-VQFN (9x9 mm) with EP |
| Kiểu lắp đặt | Surface Mount |
| FPU | Yes (single-precision) |
| DSP Instructions | Yes (single-cycle MAC, SIMD) |
| ADC | 12-bit, up to 1 Msps |
| DAC | 2x 12-bit |
| USB | USB 2.0 Full-Speed with on-chip PHY |
| SERCOM | Up to 6 flexible serial interfaces (I2C/SPI/USART) |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATSAMD51J18A-MUT
| Chân 1 | PA00 — GPIO/SERCOM/I2C |
| Chân 2 | PA01 — GPIO/SERCOM/I2C |
| Chân 3 | PA02 — GPIO/ADC0/AIN[0] |
| Chân 4 | PA03 — GPIO/ADC0/AIN[1] |
| Chân 5 | PA04 — GPIO/ADC0/AIN[2]/VOUT |
| Chân 6 | PA05 — GPIO/ADC0/AIN[3]/VREFA |
| Chân 7 | PA06 — GPIO/ADC0/AIN[4] |
| Chân 8 | PA07 — GPIO/ADC0/AIN[5] |
| Chân 9 | PA08 — GPIO/SERCOM/I2C |
| Chân 10 | PA09 — GPIO/SERCOM/I2C |
| Chân 11 | PA10 — GPIO/SERCOM/I2C |
| Chân 12 | PA11 — GPIO/SERCOM/I2C |
| Chân 13 | VDDIO — I/O supply voltage |
| Chân 14 | GND — Ground |
| Chân 15 | PA12 — GPIO/SERCOM/I2C |
| Chân 16 | PA13 — GPIO/SERCOM/I2C |
| Chân 17 | PA14 — GPIO/SERCOM/I2C |
| Chân 18 | PA15 — GPIO/SERCOM/I2C |
| Chân 19 | PA16 — GPIO/SERCOM/I2C |
| Chân 20 | PA17 — GPIO/SERCOM/I2C |
| Chân 21 | PA18 — GPIO/SERCOM/I2C |
| Chân 22 | PA19 — GPIO/SERCOM/I2C |
| Chân 23 | PA20 — GPIO/SERCOM/I2C |
| Chân 24 | PA21 — GPIO/SERCOM/I2C |
| Chân 25 | PB22 — GPIO/SERCOM/I2C |
| Chân 26 | PB23 — GPIO/SERCOM/I2C |
| Chân 27 | PA24 — GPIO/SERCOM/I2C/TC |
| Chân 28 | PA25 — GPIO/SERCOM/I2C/TC |
| Chân 29 | VDDIO — I/O supply voltage |
| Chân 30 | GND — Ground |
| Chân 31 | PB30 — GPIO/SERCOM/I2C |
| Chân 32 | PB31 — GPIO/SERCOM/I2C |
| Chân 33 | PA27 — GPIO/SERCOM/I2C |
| Chân 34 | PA28 — GPIO/SERCOM/I2C |
| Chân 35 | VREFB — Analog reference B |
| Chân 36 | GND — Ground |
| Chân 37 | PA30 — GPIO/SERCOM/I2C |
| Chân 38 | PA31 — GPIO/SERCOM/I2C |
| Chân 39 | PB00 — GPIO/SERCOM/I2C |
| Chân 40 | PB01 — GPIO/SERCOM/I2C |
| Chân 41 | PB02 — GPIO/SERCOM/I2C/ADC |
| Chân 42 | PB03 — GPIO/SERCOM/I2C/ADC |
| Chân 43 | VDDCORE — Core supply output |
| Chân 44 | GND — Ground |
| Chân 45 | PB04 — GPIO/SERCOM/I2C/ADC |
| Chân 46 | PB05 — GPIO/SERCOM/I2C/ADC |
| Chân 47 | PB06 — GPIO/SERCOM/I2C/ADC |
| Chân 48 | PB07 — GPIO/SERCOM/I2C/ADC |
| Chân 49 | PB08 — GPIO/SERCOM/I2C/ADC |
| Chân 50 | PB09 — GPIO/SERCOM/I2C/ADC |
| Chân 51 | PB10 — GPIO/SERCOM/I2C/ADC |
| Chân 52 | PB11 — GPIO/SERCOM/I2C/ADC |
| Chân 53 | PB12 — GPIO/SERCOM/I2C |
| Chân 54 | PB13 — GPIO/SERCOM/I2C |
| Chân 55 | PB14 — GPIO/SERCOM/I2C |
| Chân 56 | PB15 — GPIO/SERCOM/I2C |
| Chân 57 | VDDIO — I/O supply voltage |
| Chân 58 | GND — Ground |
| Chân 59 | PC16 — GPIO/SERCOM/I2C |
| Chân 60 | PC17 — GPIO/SERCOM/I2C |
| Chân 61 | PC18 — GPIO/SERCOM/I2C |
| Chân 62 | PC19 — GPIO/SERCOM/I2C |
| Chân 63 | VDDIO — I/O supply voltage |
| Chân 64 | RESET — Reset input (active low) |
Ứng dụng tiêu biểu
ATSAMD51J18A-MUT phù hợp cho 7 Áp dụngs: Industrial Motor Control, Human-Machine Interface (HMI) Panels, Smart Energy Metering, USB-C Peripherals and HID Devices, Audio Processing Front-Ends, IoT Edge Nodes and Sensor Hubs, Building Automation Controllers.
Industrial Motor Control
The ATSAMD51J18A-MUT fits industrial motor control because its Cortex-M4F core delivers single-cycle MAC and single-precision FPU instructions needed for field-oriented control (FOC) algorithms on BLDC and PMSM motors. Running at 120 MHz, the MCU can complete a full FOC loop including Park/Clarke transforms and SVM within microseconds. The dual 12-bit DACs generate reference waveforms for inverter control, while the high-speed 12-bit ADC samples phase currents at up to 1 Msps. Hardware PWM timers with complementary outputs drive three-phase MOSFET/IGBT bridges directly. Industrial motor control firmware typically fits within the 256 KB dual-panel Flash, leaving headroom for bootloaders. The 1.71-3.6 V supply range tolerates noisy 24 V industrial buses after regulation.
Được đề xuất
Human-Machine Interface (HMI) Panels
The ATSAMD51J18A-MUT powers HMI panels requiring a responsive graphical user interface plus real-time control. The Cortex-M4F DSP accelerates image decoding and on-the-fly transformations, while six flexible SERCOMs interface to TFT displays, touch controllers, and external memory. Hardware USB 2.0 Full-Speed with on-chip PHY enables panel configuration and firmware update from a host PC without an external PHY chip. The 64-VQFN 9x9 mm footprint suits compact panel layouts, and the industrial temperature grade ensures operation in factory environments. Designers pair the MCU with an external QSPI Flash and a small TFT-LCD, leaving the 256 KB internal Flash for the RTOS, GUI framework, and application logic.
Được đề xuất
Smart Energy Metering
The ATSAMD51J18A-MUT suits smart energy meters requiring accurate power measurement and secure communication. The 12-bit 1 Msps ADC samples voltage and current waveforms simultaneously, while the Cortex-M4F DSP computes RMS, active/reactive power, and harmonics in real time. The dual-panel Flash with ECC supports secure firmware update mechanisms mandated by metering standards. Hardware AES/SHA accelerators (when enabled via fuses) protect communication over the meter's mesh or PLC link. SERCOMs connect to metrology front-ends, real-time clocks, and wireless modules. The industrial temperature range and 1.71-3.6 V supply accommodate harsh electrical environments with surge protection on the input rail.
Được đề xuất
USB-C Peripherals and HID Devices
The ATSAMD51J18A-MUT integrates USB 2.0 Full-Speed with on-chip PHY, eliminating the need for an external PHY chip in HID, audio, or CDC peripherals. The Cortex-M4F core handles USB protocol stacks, HID report synthesis, and any DSP needed for audio input/output devices. Six SERCOMs connect to sensors, buttons, encoders, and external SPI Flash for firmware storage. Designers can build USB-C keyboards, mice, audio interfaces, or vendor-class devices without an external USB PHY, simplifying BOM and shrinking PCB area. The 120 MHz clock and 256 KB Flash accommodate USB stacks plus application code with room for bootloader and DFU modes.
Được đề xuất
Audio Processing Front-Ends
The ATSAMD51J18A-MUT is well suited for audio processing applications such as digital mixers, effect pedals, and USB audio interfaces. The Cortex-M4F FPU executes biquad filters, FFTs, and dynamics processing at sample rates up to 48 kHz with headroom. Dual 12-bit DACs drive line outputs, while the 12-bit ADC captures line or microphone inputs. SERCOMs interface to I2S codecs for higher-fidelity 24-bit paths, and the I2S peripheral in the SAM D51 family can be configured via the peripheral multiplexing scheme. USB 2.0 Full-Speed with on-chip PHY enables class-compliant USB audio without an external PHY, reducing BOM cost in low-latency streaming scenarios.
Được đề xuất
IoT Edge Nodes and Sensor Hubs
The ATSAMD51J18A-MUT serves as a sensor hub in IoT edge nodes where local DSP preprocessing reduces uplink bandwidth. The Cortex-M4F performs on-device anomaly detection or feature extraction before forwarding summaries via Wi-Fi, BLE, or LoRa companion modules. Six flexible SERCOMs handle I2C sensors, SPI displays, and UART modules, while USB enables local configuration. The 1.71-3.6 V supply range supports battery-powered operation with DC-DC efficiency. Industrial temperature grade enables outdoor or factory deployments. Designers can run a lightweight RTOS such as FreeRTOS or Zephyr on the M51 for deterministic sensor fusion, while the 256 KB Flash holds the OS plus application logic.
Được đề xuất
Building Automation Controllers
The ATSAMD51J18A-MUT is a strong fit for building automation controllers (BACnet, Modbus, KNX gateways) needing deterministic networking and DSP for sensor filtering. Cortex-M4F DSP executes real-time FFT-based vibration monitoring on HVAC equipment or audio detection for security panels. Six SERCOMs interface to RS-485 transceivers, KNX/TP-UART chips, and I2C environmental sensors simultaneously. Hardware USB supports local commissioning tools, while Flash with ECC ensures firmware integrity over multi-year deployments. The 64-VQFN footprint and industrial temperature grade suit DIN-rail enclosures with constrained ventilation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD51J18A-MUT — 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 | ATSAMD51J19A-MUT | ATSAMD51J20A-MUT | ATSAMD51J18A-MU | ATSAMD51J18A-AUT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (9x9 mm) with EP | 64-VQFN (9x9 mm) with EP - same | 64-VQFN (9x9 mm) with EP - same | 64-VQFN (9x9 mm) with EP - same | 64-VQFN (9x9 mm) with EP - same |
| Core | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz |
| Flash | 256 KB | 512 KB | 1 MB | 256 KB | 256 KB |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (automotive) |
| Packaging Form | Tape & Reel | Tape & Reel | Tape & Reel | Tray | Tape & Reel |
| USB | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY |
| SERCOMs | Up to 6 (I2C/SPI/USART) | Up to 6 (I2C/SPI/USART) | Up to 6 (I2C/SPI/USART) | Up to 6 (I2C/SPI/USART) | Up to 6 (I2C/SPI/USART) |
| ADC / DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC | 12-bit 1 Msps ADC / 2x 12-bit DAC |
Bảo phân biệt quan trọng
- Higher Flash density within same footprint (vsATSAMD51J19A-MUT)
- Pin-compatible upgrade path to 1 MB Flash (vsATSAMD51J20A-MUT)
- Automotive temperature grade option in same package (vsATSAMD51J18A-AUT)
- Tray packaging variant for prototype builds (vsATSAMD51J18A-MU)
Ghi chú thiết kế
The ATSAMD51J18A-MUT requires separate VDDIO and VDDCORE rails. VDDIO can range from 1.71-3.6 V to power I/O and the on-chip voltage regulator. The internal regulator generates VDDCORE (~1.2 V) from VDDIO; place the recommended 1 uF X7R decoupling capacitor on the VDDCORE pin as close as physically possible. Failure to decouple VDDCORE correctly can cause core instability or boot failure. Add a bulk 10 uF + 100 nF pair on VDDIO near the supply pins. For battery-powered designs, use the on-chip Buck regulator mode (configurable via fuses) to improve efficiency at light loads.
Route the 64-VQFN 9x9 mm footprint with 0.5 mm pitch using micro-via-in-pad if the design uses inner-layer fan-out under the exposed pad. The EP must be soldered to a continuous ground plane for thermal dissipation; thermal resistance theta_JA depends heavily on EP solder quality. Use at least 4 ground vias in the EP pad to stitch thermal conductivity. Place the SWD signals (SWDIO, SWCLK, SWO) on accessible test points for programming. Keep the analog reference pins VREFA/VREFB routed away from switching signals to avoid ADC noise coupling.
Three pitfalls deserve attention. First, the SAM D51 SERCOM peripheral multiplexing must be configured via the PORT and PMUX registers; the Arduino 'pin number' abstractions do not always map directly to the data sheet's SERCOM numbering. Second, the USB bus needs a 1.5 kohm pull-up on D+ for Full-Speed enumeration; many development boards include this but custom PCBs must add it. Third, when migrating firmware between J18A and J19A/J20A, the linker script must be updated to reflect the larger Flash; otherwise the bootloader may silently fail to program the upper regions.
Estimated: at maximum 120 MHz CPU activity with all peripherals active, the 64-VQFN EP package can dissipate approximately 200-300 mW continuous before junction temperature becomes a limiting factor. In a typical indoor application with adequate ground plane stitching, the junction temperature rise is minimal. For enclosed housings without airflow, derate the CPU clock to 80 MHz or implement sleep modes to maintain junction temperature within the 125 C maximum. The EP must not be left floating; floating EP causes thermal shutdown under load.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. The standard ATSAMD51J18A-MUT is industrial grade (-40C to +85C); the ATSAMD51J18A-AUT variant is automotive-grade AEC-Q100 qualified. All variants are lead-free and halogen-free per Microchip's environmental compliance documentation.
