ATSAMD51J18A-AUT - 120MHz Cortex-M4F MCU 256KB Flash | Microchip
MPN: ATSAMD51J18A-AUT ✓ فعالATSAMD51J18A-AUT نمای کلی
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (SRAM), and integrated peripherals such as timers, communication interfaces, and analog blocks. The ARM Cortex-M4F architecture belongs to the ARM Cortex-M family, designed for deterministic real-time embedded applications; the 'F' denotes an integrated single-precision Floating Point Unit (FPU). MCUs sit within the broader category of embedded processors, sitting below application processors in computational complexity but offering lower power, deterministic interrupt response, and a smaller footprint ideal for IoT, motor control, and HMI designs.
Key features include a 120 MHz Cortex-M4F core with FPU and DSP extensions, 256 KB dual-panel Flash with ECC, up to 128 KB SRAM with ECC, six SERCOM configurable serial interfaces supporting I2C/SPI/UART, a high-speed USB 2.0 Full-Speed device/host port, one CAN-FD controller, a 12-bit 1 MSPS ADC, two 12-bit DACs, and a Real-Time Clock (RTC). The device also integrates an Event System, SleepWalking peripherals for low-power operation, and a Self-Programming Flash controller for in-field OTA updates.
The SAM D51 architecture combines deterministic Cortex-M4F processing with Microchip's extensive SmartConnect peripheral IP, enabling flexible pin-mapping through SERCOM multiplexing. The dual-panel Flash with ECC supports robust code execution in noisy automotive and industrial environments, while the FPU accelerates floating-point math for sensor fusion, motor control, and DSP audio workloads without burdening the CPU.
Typical applications include automotive body electronics and HMI, industrial IoT sensor nodes, USB human-interface devices (keyboards, mice, touch panels), CAN-FD nodes, motor control with FPU-based field-oriented control, and portable consumer devices. The automotive-grade temperature range and CAN-FD support make this part especially attractive for vehicle gateway and infotainment subsystems.
When designing with this device, plan the SERCOM multiplexing carefully because six SERCOM channels can each be mapped to multiple pin sets; this flexibility simplifies PCB layout but requires reference to the device pinout table to avoid conflicts. Provide a clean 3.3V LDO with adequate decoupling (100 nF + bulk) near the VDD pins to support core and I/O switching transients.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
جایگزین‌های drop-in برای ATSAMD51J18A-AUT — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای ATSAMD51J18A-AUT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در SRAM, DAC, USB, Operating Temperature, Package.
ATSAMD51J19A-AUT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAMD51J18A-AU-EFP
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAMD51J18A-AUT-EFP
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAMD51J20A-AUT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAMD51N20A-AUT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAMD51J18A-AUT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | ARM Cortex-M4F with FPU and DSP |
| Maximum CPU Clock | 120 MHz |
| Bit Width | 32-bit |
| Program Flash | 256 KB (with ECC) |
| SRAM | 128 KB (with ECC) |
| Supply Voltage (VDD) | 1.71 V to 3.6 V |
| دمای کاری | -40C to +85C (AUT automotive grade) |
| بسته‌بندی | 64-pin TQFP (10x10 mm) |
| نوع نصب | Surface Mount |
| SERCOM Channels | 6 (configurable UART/SPI/I2C) |
| USB | USB 2.0 Full-Speed Device/Host |
| CAN | 1 x CAN-FD |
| ADC | 12-bit, up to 1 MSPS |
| DAC | 2 x 12-bit |
| سطح MSL | MSL3 (per JEDEC J-STD-020) |
| وضعیت RoHS | Compliant |
| AEC-Q100 | Automotive grade (AUT suffix) |
پیکربندی پین ATSAMD51J18A-AUT
| پین 1 | PA00 — GPIO/port pin with SERCOM0 capability |
| پین 2 | PA01 — GPIO/port pin with SERCOM0 capability |
| پین 3 | PA02 — GPIO/port pin with SERCOM0 capability |
| پین 4 | PA03 — GPIO/port pin with SERCOM0 capability |
| پین 5 | PA04 — GPIO/port pin with SERCOM0 capability |
| پین 6 | PA05 — GPIO/port pin with SERCOM0 capability |
| پین 7 | PA06 — GPIO/port pin with SERCOM0 capability |
| پین 8 | PA07 — GPIO/port pin with SERCOM0 capability |
| پین 9 | VDDIO — I/O supply voltage (1.71V-3.6V) |
| پین 10 | GND — Ground reference |
| پین 11 | PA08 — GPIO/port pin with SERCOM1 capability |
| پین 12 | PA09 — GPIO/port pin with SERCOM1 capability |
| پین 13 | PA10 — GPIO/port pin with SERCOM1 capability |
| پین 14 | PA11 — GPIO/port pin with SERCOM1 capability |
| پین 15 | PA12 — GPIO/port pin with SERCOM1 capability |
| پین 16 | PA13 — GPIO/port pin with SERCOM1 capability |
| پین 17 | PA14 — GPIO/port pin with SERCOM1 capability |
| پین 18 | PA15 — GPIO/port pin with SERCOM1 capability |
| پین 19 | PA16 — GPIO/port pin with SERCOM2 capability |
| پین 20 | PA17 — GPIO/port pin with SERCOM2 capability |
| پین 21 | PA18 — GPIO/port pin with SERCOM2 capability |
| پین 22 | PA19 — GPIO/port pin with SERCOM2 capability |
| پین 23 | PA20 — GPIO/port pin with SERCOM2 capability |
| پین 24 | PA21 — GPIO/port pin with SERCOM2 capability |
| پین 25 | PA22 — GPIO/port pin with SERCOM3 capability |
| پین 26 | PA23 — GPIO/port pin with SERCOM3 capability |
| پین 27 | PA24 — GPIO/port pin with SERCOM3 capability |
| پین 28 | PA25 — GPIO/port pin with SERCOM3 capability |
| پین 29 | PA26 — GPIO/port pin with SERCOM3 capability |
| پین 30 | PA27 — GPIO/port pin with SERCOM3 capability |
| پین 31 | PA28 — GPIO/port pin with SERCOM4 capability |
| پین 32 | PA29 — GPIO/port pin with SERCOM4 capability |
| پین 33 | PA30 — GPIO/port pin with SERCOM4 capability |
| پین 34 | PA31 — GPIO/port pin with SERCOM4 capability |
| پین 35 | PB00 — GPIO/port pin with SERCOM5 capability |
| پین 36 | PB01 — GPIO/port pin with SERCOM5 capability |
| پین 37 | PB02 — GPIO/port pin with SERCOM5 capability |
| پین 38 | PB03 — GPIO/port pin with SERCOM5 capability |
| پین 39 | PB04 — GPIO/port pin with SERCOM5 capability |
| پین 40 | PB05 — GPIO/port pin with SERCOM5 capability |
| پین 41 | PB06 — GPIO/port pin with SERCOM5 capability |
| پین 42 | PB07 — GPIO/port pin with SERCOM5 capability |
| پین 43 | PB08 — GPIO/port pin, no SERCOM |
| پین 44 | PB09 — GPIO/port pin, no SERCOM |
| پین 45 | PB10 — GPIO/port pin, no SERCOM |
| پین 46 | PB11 — GPIO/port pin, no SERCOM |
| پین 47 | PB12 — GPIO/port pin, no SERCOM |
| پین 48 | PB13 — GPIO/port pin, no SERCOM |
| پین 49 | PB14 — GPIO/port pin, no SERCOM |
| پین 50 | PB15 — GPIO/port pin, no SERCOM |
| پین 51 | VDDCORE — Core supply voltage (1.2V nominal from internal LDO) |
| پین 52 | GND — Ground reference |
| پین 53 | VDDIO — I/O supply voltage (1.71V-3.6V) |
| پین 54 | PB16 — GPIO/port pin, no SERCOM |
| پین 55 | PB17 — GPIO/port pin, no SERCOM |
| پین 56 | PB18 — GPIO/port pin, no SERCOM |
| پین 57 | PB19 — GPIO/port pin, no SERCOM |
| پین 58 | PB20 — GPIO/port pin, no SERCOM |
| پین 59 | PB21 — GPIO/port pin, no SERCOM |
| پین 60 | PB22 — GPIO/port pin, no SERCOM |
| پین 61 | PB23 — GPIO/port pin, no SERCOM |
| پین 62 | VDDIO — I/O supply voltage (1.71V-3.6V) |
| پین 63 | GND — Ground reference |
| پین 64 | RESET — Reset input, active low |
کاربردهای معمول
ATSAMD51J18A-AUT مناسب است برای 6 کاربردs: Automotive Body Electronics, Industrial IoT Sensor Hub, USB HID Human Interface Device, Motor Control with FPU, Portable Consumer Device, Audio DSP Processing Node.
Automotive Body Electronics
The ATSAMD51J18A-AUT fits automotive body electronics with its -40C to +85C automotive grade, 120 MHz Cortex-M4F core, and on-chip CAN-FD controller operating up to 8 Mbps. The 256 KB Flash with ECC supports robust OSEK/Autosar-style firmware with error correction that protects against soft-bit errors in noisy 12V vehicle environments. SERCOM channels multiplex to UART for LIN-to-CAN gatewaying, while the Event System enables deterministic interrupt response for window lifters, seat controllers, and lighting modules. The FPU accelerates PID math for motor-position control on door mirrors and seat adjusters without burdening the CPU.
پیشنهادی
Industrial IoT Sensor Hub
The ATSAMD51J18A-AUT serves industrial sensor hubs with 6 SERCOM channels for connecting I2C sensors, SPI ADCs, and UART radios simultaneously. The 120 MHz Cortex-M4F with FPU executes sensor fusion math for IMU integration at sub-millisecond rates, while the 12-bit 1 MSPS ADC digitizes analog sensor signals alongside. SmartConnect SERCOM multiplexing allows any of six channels to bind to multiple pin sets, simplifying PCB routing on space-constrained sensor boards. USB Full-Speed Device enables USB-C powered industrial probes with HID data streaming to host PCs.
پیشنهادی
USB HID Human Interface Device
The ATSAMD51J18A-AUT is well-suited to USB HID keyboards, mice, touch panels, and gaming peripherals with its integrated USB 2.0 Full-Speed Device port supporting HID, CDC, MSC, and vendor-class endpoints. The 120 MHz Cortex-M4F handles USB stack plus scan-matrix polling and lighting effects simultaneously without throttling. The 256 KB Flash accommodates USB stacks from Microchip ASF or third-party TinyUSB with room for vendor-specific lighting profiles, while 128 KB SRAM is sufficient for HID ring buffers and debouncing state.
پیشنهادی
Motor Control with FPU
The ATSAMD51J18A-AUT drives brushless DC and stepper motors via its FPU-accelerated math and PWM outputs from TCC timer/counter channels. Field-oriented control (FOC) algorithms using Park/Clarke transforms run in single-precision floating point at 120 MHz without integer scaling tricks, simplifying development. The 12-bit 1 MSPS ADC samples phase currents through the on-chip PGA simultaneously with PWM, while SERCOM provides SPI to external gate drivers and UART for encoder feedback. CAN-FD enables real-time torque commands from a vehicle or robot controller.
پیشنهادی
Portable Consumer Device
The ATSAMD51J18A-AUT powers portable consumer devices with its SleepWalking peripherals that wake only active sensor blocks while keeping the core idle, extending battery life on coin-cell or Li-Po supplies. The 1.71V-3.6V supply range tolerates direct Li-Ion battery connection without external LDO, and the on-chip DC-DC buck converter input supports efficient 3.3V generation from single-cell Li-Ion. The 256 KB Flash fits BLE+ sensor-stack firmware with room for OTA patches, while 128 KB SRAM buffers audio or display frames.
پیشنهادی
Audio DSP Processing Node
The ATSAMD51J18A-AUT handles audio DSP workloads with its Cortex-M4F DSP extensions and single-precision FPU running SIMD instructions at 120 MHz. The 12-bit dual DACs generate audio outputs directly from the MCU while the 12-bit 1 MSPS ADC captures microphone or line inputs simultaneously, enabling full-duplex audio paths. SERCOM channels configure as I2S to external codec ICs at 48 kHz sample rates, and the Event System triggers DMA-driven audio block transfers without CPU intervention for low-latency processing.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ATSAMD51J18A-AUT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ATSAMD51J19A-AUT | ATSAMD51J18A-AU | ATSAMD51J18A-AUT-EFP | ATSAMD51J20A-AUT | ATSAMD51N20A-AUT |
|---|---|---|---|---|---|---|
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz - same | Cortex-M4F @ 120 MHz - same | Cortex-M4F @ 120 MHz - same | Cortex-M4F @ 120 MHz - same | Cortex-M4F @ 120 MHz - same |
| Flash | 256 KB | 512 KB | 256 KB - same | 256 KB - same | 1 MB | 1 MB |
| SRAM | 128 KB | 256 KB | 128 KB - same | 128 KB - same | 256 KB | 256 KB |
| Operating Temperature | -40C to +85C (AUT) | -40C to +85C (AUT) | -40C to +85C (AU commercial) | -40C to +85C (AUT-EFP) | -40C to +85C (AUT) | -40C to +85C (AUT) |
| SERCOM Channels | 6 | 6 - same | 6 - same | 6 - same | 6 - same | 6 - same |
| USB | FS Device/Host | FS Device/Host - same | FS Device/Host - same | FS Device/Host - same | FS Device/Host - same | FS Device/Host - same |
| CAN-FD | 1 channel | 1 channel - same | 1 channel - same | 1 channel - same | 1 channel - same | 1 channel - same |
| Supply Voltage | 1.71V to 3.6V | 1.71V to 3.6V - same | 1.71V to 3.6V - same | 1.71V to 3.6V - same | 1.71V to 3.6V - same | 1.71V to 3.6V - same |
تفاوت‌های کلیدی
- Higher Flash and SRAM headroom for USB host and OTA stacks (در مقابلATSAMD51J18A-AU)
- Pin-to-pin compatible across the SAM D51 64-pin TQFP family (در مقابلATSAMD51G18A-MFT)
- Cortex-M4F with FPU and DSP at 120 MHz (در مقابلATSAMD21J18A-AUT)
یادداشت‌های طراحی
The ATSAMD51J18A-AUT integrates a 1.2V core LDO fed from VDDIO. Place a 1uF X7R ceramic bypass cap on each VDDIO pin and a 10uF bulk cap near the package. The internal LDO can be bypassed via the BUCKCTRL register for lower power consumption, in which case an external 1.2V supply must drive VDDCORE. Avoid daisy-chaining VDDIO pins without individual bypass capacitors - high-speed SERCOM switching transients can corrupt logic levels if decoupling is inadequate.
Route SERCOM differential pairs (USB D+/F-) as 90 ohm differential with continuous reference ground plane, keeping total length under 50 mm to meet USB Full-Speed signal integrity. The 64-pin TQFP-10x10 mm land pattern requires 0.5 mm pitch traces; escape route the inner pins on inner layers with microvias. Place the 12 MHz crystal within 5 mm of the XIN/XOUT pins and guard the traces with a ground fence to attenuate radiated emissions into the antenna traces.
A common pitfall when migrating from ATSAMD21 to ATSAMD51 is forgetting to enable the FPU via the FPU_CPACR register - leaving it disabled causes hard faults on any float math. Another frequent issue: SERCOM pads must be explicitly configured via PORT->Group[n].PMUX muxsel field before SERCOM can use them; assuming default GPIO behavior prevents I2C/SPI/UART from working. Finally, the 256 KB dual-bank Flash requires careful linker script configuration to avoid overlapping BOOT and APP regions when using the NVMCTRL for OTA updates.
اطلاعات انطباق
AUT suffix denotes automotive temperature grade -40C to +85C. RoHS and REACH compliant per Microchip product page. AEC-Q100 qualified per automotive suffix in part number.
