ATSAMD51J18A-MU - 120MHz Cortex-M4F MCU, 256KB Flash | Microchip
부품 번호: ATSAMD51J18A-MU ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $4.99 | $4.99 |
| 10 | $4.55 | $45.50 |
| 100 | $4.12 | $412.00 |
| 500 | $3.74 | $1,870.00 |
| 1,000 | $3.42 | $3,420.00 |
ATSAMD51J18A-MU 개요
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one die. The Cortex-M4F family specifically adds a single-precision hardware FPU and DSP extensions, enabling efficient execution of motor-control loops, audio processing, and digital filter algorithms. Within the broader hierarchy, the ATSAMD51J18A-MU sits at: ARM Cortex-M4F core -> Cortex-M4 family -> Cortex-M series -> 32-bit MCU -> embedded microprocessor -> semiconductor IC.
Key features include a 120 MHz Cortex-M4F core with FPU and DSP, 256 KB Flash with ECC, 128 KB SRAM, full-speed USB with embedded PHY, two CAN-FD controllers, up to six SERCOM interfaces configurable as UART/SPI/I2C/LIN, a 12-bit 1 Msps ADC with up to 16 channels, two 12-bit DACs, and an onboard 32 kHz RTC. The SAM D51 series also adds a Peripheral Touch Controller (PTC) supporting capacitive touch and an integrated SDHC card interface for removable storage designs.
The device operates from 1.71 V to 3.63 V, supporting both 1.8 V and 3.3 V system rails without level translation. A built-in 48 MHz DFLL and fractional PLL generate the system clock, while the on-chip Flash has ECC for industrial reliability. The 64-QFN package exposes 51 GPIO and supports industrial temperature grade up to 85 C.
Typical applications include industrial control and HMI panels, USB peripherals such as Human Interface Devices and audio class devices, automotive body and comfort modules (non-safety), IoT sensor hubs, motor control BLDC/PMSM drives, and battery-powered portable instrumentation. The combination of Cortex-M4F DSP performance and CAN-FD makes the SAM D51 well-suited for CAN-based industrial networks.
When designing with this part, allocate at least one full SERCOM channel to the debug UART for field diagnostics, and place a 1 uF X7R decoupling cap within 3 mm of each VDDCORE and VDDIO pin pair. Ensure unused pins are configured as outputs low or inputs with internal pull enabled to minimize current draw in low-power modes.
This page synthesizes distributor pricing, drop-in alternatives from the SAM D51 family, and practical design notes that go beyond the manufacturer datasheet alone.
드롭인 대체품: ATSAMD51J18A-MU — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ATSAMD51J18A-MU (동일 폼 팩터 및 풋프린트) — 차이점: Package, USB, SRAM, DAC, Operating Temperature.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ATSAMD51J19A-MU
✅ 드롭인✓ 재고 있음
$6.1 / 개
데이터시트 보기 →ATSAMD51J20A-MU
✅ 드롭인✓ 재고 있음
$4.75 / 개
데이터시트 보기 →ATSAMD51J18A-MUT
✅ 드롭인✓ 재고 있음
$5.18 / 개
데이터시트 보기 →ATSAMD51G19A-MFT
✅ 드롭인✓ 재고 있음
$4.02 / 개
데이터시트 보기 →ATSAMD51G18A-MFT
✅ 드롭인✓ 재고 있음
$3.55 / 개
데이터시트 보기 →ATSAMD51J18A-MU 최대 정격 & 전기적 특성
| Core Architecture | ARM Cortex-M4F with FPU and DSP |
| Maximum CPU Clock | 120 MHz |
| Program Flash | 256 KB (256K x 8) |
| SRAM | 128 KB |
| 패키지 | 64-pin QFN (9x9 mm) with exposed pad |
| Operating Voltage | 1.71 V to 3.63 V |
| GPIO Count | 51 |
| ADC | 12-bit, up to 1 Msps, up to 16 channels |
| DAC | Two 12-bit DACs |
| USB | Full-speed USB 2.0 with on-chip PHY |
| CAN | Two CAN-FD controllers |
| SERCOM | Up to 6 configurable SERCOM (UART/SPI/I2C/LIN) |
| Touch Peripheral | Peripheral Touch Controller (PTC) |
| 동작 온도 | -40 C to +85 C (industrial grade) |
| RoHS 상태 | Compliant |
ATSAMD51J18A-MU 핀 구성
| 핀 1 | PA00 — GPIO / XIN32 (32.768 kHz crystal input) |
| 핀 2 | PA01 — GPIO / XOUT32 (32.768 kHz crystal output) |
| 핀 3 | PA02 — GPIO / AIN0 (ADC analog input 0) |
| 핀 4 | PA03 — GPIO / AIN1 / VREFA (ADC reference) |
| 핀 5 | GND — Ground |
| 핀 6 | VDDIO — I/O supply voltage (1.71-3.63 V) |
| 핀 7 | PA04 — GPIO / AIN2 |
| 핀 8 | PA05 — GPIO / AIN3 |
| 핀 9 | PA06 — GPIO / AIN4 |
| 핀 10 | PA07 — GPIO / AIN5 |
| 핀 11 | PA08 — GPIO / AIN6 / SERCOM0 PAD0 |
| 핀 12 | PA09 — GPIO / AIN7 / SERCOM0 PAD1 |
| 핀 13 | PA10 — GPIO / AIN8 / SERCOM0 PAD2 |
| 핀 14 | PA11 — GPIO / AIN9 / SERCOM0 PAD3 |
| 핀 15 | VDDCORE — Internal 1.2 V regulator output (decoupling) |
| 핀 16 | GND — Ground |
| 핀 17 | PA12 — GPIO / SERCOM1 PAD0 |
| 핀 18 | PA13 — GPIO / SERCOM1 PAD1 |
| 핀 19 | PA14 — GPIO / SERCOM1 PAD2 |
| 핀 20 | PA15 — GPIO / SERCOM1 PAD3 |
| 핀 21 | PA16 — GPIO / SERCOM2 PAD0 / I2S FS |
| 핀 22 | PA17 — GPIO / SERCOM2 PAD1 / I2S SCK |
| 핀 23 | PA18 — GPIO / SERCOM2 PAD2 / I2S MCK |
| 핀 24 | PA19 — GPIO / SERCOM2 PAD3 / I2S SDO |
| 핀 25 | PA20 — GPIO / SERCOM3 PAD0 |
| 핀 26 | PA21 — GPIO / SERCOM3 PAD1 |
| 핀 27 | PA22 — GPIO / SERCOM3 PAD2 |
| 핀 28 | PA23 — GPIO / SERCOM3 PAD3 |
| 핀 29 | PA24 — GPIO / USB DM (USB data minus) |
| 핀 30 | PA25 — GPIO / USB DP (USB data plus) |
| 핀 31 | GND — Ground |
| 핀 32 | VDDIO — I/O supply voltage |
| 핀 33 | PA27 — GPIO |
| 핀 34 | PA28 — GPIO |
| 핀 35 | RESET — Active-low reset input |
| 핀 36 | SWDIO — Serial Wire Debug I/O |
| 핀 37 | SWCLK — Serial Wire Debug clock |
| 핀 38 | PB02 — GPIO / SERCOM4 PAD0 |
| 핀 39 | PB03 — GPIO / SERCOM4 PAD1 |
| 핀 40 | PB04 — GPIO / SERCOM4 PAD2 |
| 핀 41 | PB05 — GPIO / SERCOM4 PAD3 |
| 핀 42 | PB06 — GPIO / SERCOM5 PAD0 |
| 핀 43 | PB07 — GPIO / SERCOM5 PAD1 |
| 핀 44 | PB08 — GPIO / SERCOM5 PAD2 |
| 핀 45 | PB09 — GPIO / SERCOM5 PAD3 / I2S SDI |
| 핀 46 | PB10 — GPIO |
| 핀 47 | PB11 — GPIO |
| 핀 48 | PB12 — GPIO |
| 핀 49 | PB13 — GPIO |
| 핀 50 | PB14 — GPIO |
| 핀 51 | PB15 — GPIO |
| 핀 52 | PB16 — GPIO |
| 핀 53 | PB17 — GPIO |
| 핀 54 | PB22 — GPIO |
| 핀 55 | PB23 — GPIO |
| 핀 56 | PB30 — GPIO |
| 핀 57 | PB31 — GPIO |
| 핀 58 | VDDIO — I/O supply voltage |
| 핀 59 | GND — Ground |
| 핀 60 | VDDIN — Main supply input to internal regulator |
| 핀 61 | PA30 — GPIO / SWO (trace) |
| 핀 62 | PA31 — GPIO |
| 핀 63 | GND — Ground |
| 핀 64 | EP — Exposed pad (must be soldered to central GND copper pour) |
일반적인 애플리케이션
ATSAMD51J18A-MU 적합 용도: 6 애플리케이션s: Industrial HMI and Control Panels, USB Audio Class Devices and Headsets, BLDC/PMSM Motor Control, IoT Sensor Hubs and Edge Nodes, Automotive Body and Comfort Modules, Portable Test and Measurement.
Industrial HMI and Control Panels
The ATSAMD51J18A-MU's 120 MHz Cortex-M4F core, 51 GPIO, and six SERCOM channels (UART/SPI/I2C) make it a strong fit for industrial HMI panels driving TFT displays and reading keypad/encoder inputs. The 12-bit ADC with up to 16 channels handles analog sensor inputs for pressure, flow, or temperature, while two CAN-FD controllers connect to industrial CANopen or DeviceNet backbones. Per the SAM D51 datasheet, an external QSPI Flash can be memory-mapped over SERCOM for large UI assets.
추천
USB Audio Class Devices and Headsets
The full-speed USB 2.0 with embedded PHY and two 12-bit DACs make the ATSAMD51J18A-MU well suited for USB audio class 1.0/2.0 headsets and USB microphones. The Cortex-M4F DSP engine handles sample-rate conversion, EQ, and noise suppression in real time, while the I2S peripheral streams to external codecs for higher fidelity. According to Microchip application notes, the integrated PTC can implement capacitive touch controls without external ICs.
추천
BLDC/PMSM Motor Control
The TCC (Timer/Counter for Control) units on the ATSAMD51J18A-MU generate complementary PWM with dead-time insertion and hardware fault shutdown - essential for safe 3-phase inverter drive of BLDC and PMSM motors. The Cortex-M4F DSP extensions accelerate field-oriented control (FOC) math, while the 1 Msps ADC samples phase currents synchronously to the PWM. According to the SAM D51 datasheet, the SERCOM-based encoder interface reads quadrature encoders without an external decoder IC.
추천
IoT Sensor Hubs and Edge Nodes
The ATSAMD51J18A-MU's 256 KB Flash supports full TLS stacks plus application code for IoT edge nodes aggregating sensor data over I2C/SPI. The 128 KB SRAM holds TCP/IP buffers and JSON payloads, while six SERCOM channels expand into multiple sensor buses. Per the datasheet, the low-power Sleep and Standby modes retain SRAM at under 100 uA, ideal for battery-powered environmental monitors.
추천
Automotive Body and Comfort Modules
The ATSAMD51J18A-MU industrial grade variant handles non-safety automotive body controllers - window lifters, seat controls, climate panel UI - by virtue of its CAN-FD controllers and LIN-capable SERCOM. The Cortex-M4F DSP runs audio chime synthesis for warning chimes. According to Microchip documentation, automotive-grade variants in the SAM D51 family (with -AUT suffix) carry AEC-Q100 qualification for in-cabin use.
추천
Portable Test and Measurement
The 120 MHz Cortex-M4F with FPU enables real-time DSP for portable oscilloscopes, data loggers, and signal analyzers built on the ATSAMD51J18A-MU. The 1 Msps 12-bit ADC captures waveforms while the 256 KB Flash stores firmware with calibration tables. The integrated USB device port streams acquired data to a host PC, and the SDHC interface logs directly to removable SD cards without an external bridge IC.
추천
추천 제품 요약
엔지니어링 참조 데이터: ATSAMD51J18A-MU — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ATSAMD51J19A-MU | ATSAMD51J20A-MU | ATSAMD51J18A-MUT | ATSAMD51G19A-MFT | ATSAMD51G18A-MFT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - 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 | ARM Cortex-M4F @ 120 MHz |
| Flash | 256 KB | 512 KB | 1 MB | 256 KB | 512 KB | 256 KB |
| SRAM | 128 KB | 192 KB | 256 KB | 128 KB | 192 KB | 128 KB |
| USB | Full-speed USB 2.0 with PHY | Full-speed USB 2.0 with PHY | Full-speed USB 2.0 with PHY | Full-speed USB 2.0 with PHY | Full-speed USB 2.0 with PHY | Full-speed USB 2.0 with PHY |
| CAN-FD Controllers | 2 | 2 | 2 | 2 | 2 | 2 |
| Operating Voltage | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V |
| GPIO Count | 51 | 51 | 51 | 51 | Reduced (G-series subset) | Reduced (G-series subset) |
주요 차별점
- Dual CAN-FD controllers integrated (vs ATSAMD51G18A-MFT)
- Double Flash with same footprint (vs ATSAMD51J19A-MU)
- Full peripheral set in industrial temp grade (vs ATSAMD51J18A-MUT)
설계 노트
Place a 1 uF X7R ceramic decoupling capacitor within 3 mm of every VDDCORE pin and a 100 nF cap within 3 mm of every VDDIO pin. According to the SAM D51 datasheet, the on-chip 1.2 V regulator supplies VDDCORE and requires at least 1 uF of bulk decoupling plus a 100 nF high-frequency bypass. Estimated: at 120 MHz with 1.8 V supply and full GPIO toggle, typical core current is approximately 25-30 mA - the regulator must handle this transient without sagging.
The 64-QFN exposed pad (EP) must be soldered to a central ground copper pour of at least 25 mm^2 to provide the thermal path for the package. According to the SAM D51 datasheet, thermal resistance theta_JA on a 2-layer JEDEC test board is approximately 31 C/W. Estimated: at full 120 MHz with 3.3 V supply the device typically dissipates 200-300 mW, so the junction-to-ambient rise is roughly 6-10 C above ambient under normal operating conditions - well within the 85 C industrial limit.
Route the SWDIO and SWCLK traces as a 2-wire debug bus with at least 4x ground isolation from adjacent switching signals. According to Microchip application notes, keep the SWD pair length-matched and avoid running them parallel to the USB DP/DM differential pair. Place a 10 kOhm pull-up on SWDIO and 100 kOhm pull-down on RESET for reliable debug-port re-entry.
Do not leave unused GPIO as floating inputs - configure them as outputs low or inputs with the internal pull-up enabled. According to the SAM D51 datasheet, floating CMOS inputs can draw several hundred microamps per pin from the input buffer and may cause spurious NMI or interrupt wakeups. Also, ensure the NVMCTRL row-write operations are performed with interrupts disabled to avoid mid-write corruption of Flash with ECC enabled.
The USB DP/DM differential pair must be routed with 90 ohm differential impedance and trace length matching within 0.15 mm. According to the USB 2.0 specification and Microchip USB design notes, place the 22 ohm series source termination resistors close to the MCU pins and keep the DP/DM traces no longer than 50 mm on FR-4. A common-mode choke near the connector improves conducted emissions immunity.
규정 준수 정보
RoHS and REACH compliant per LCSC product listing. Industrial temperature grade -40 C to +85 C. For AEC-Q100 qualified automotive variant, use the -AUT suffix part (ATSAMD51J18A-AUT).
