ATSAMD51P20A-AUT - 120MHz Cortex-M4F MCU 1MB Flash | Microchip
MPN: ATSAMD51P20A-AUT ✓ فعالATSAMD51P20A-AUT نمای کلی
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 architecture adds a single-precision IEEE 754 Floating Point Unit and a DSP instruction set, which accelerates closed-loop control loops and signal-processing tasks. Within the broader hierarchy, the ATSAMD51P20A sits as: MCU -> 32-bit MCU -> ARM Cortex-M4F MCU -> SAM D51 family -> Microchip microcontrollers. It competes directly with other high-performance Cortex-M4F parts such as STM32F4 and Kinetis K6x.
Key features of the ATSAMD51P20A-AUT include 120 MHz CPU clock with FPU, 1 MB dual-panel Flash with ECC, 256 KB SRAM, a 12-bit 1 MSPS ADC with up to 32 channels, two 12-bit DACs, four SERCOM channels (configurable as UART/SPI/I2C), an on-chip high-speed USB 2.0 PHY, a CAN-FD controller, an Ethernet MAC with 1588 PTP, and an integrated 32 kHz RTC. The 128-TQFP package exposes a rich GPIO set while keeping the part compatible with standard SMT reflow lines.
Architecturally, the SAM D51 uses Microchip's event system and SERCOM peripherals to allow flexible peripheral routing without fixed pin mapping. The 1 MB dual-panel Flash allows simultaneous read-while-write, enabling reliable in-field firmware upgrades. The device operates from 1.71V to 3.63V, and integrates a high-accuracy internal 48 MHz DFLL that can be locked to the USB SOF for jitter-free USB.
Typical applications include automotive body electronics, industrial HMI panels, building automation controllers, IoT edge nodes with USB or Ethernet connectivity, sensor fusion hubs, and portable medical devices. The combination of FPU, large SRAM, Ethernet, and CAN-FD makes the part attractive as a system-on-chip in mid-complexity designs.
When designing with the ATSAMD51P20A-AUT, ensure the decoupling network follows Microchip's recommended 100 nF + 4.7 uF per VDD pin, place the 32.768 kHz crystal within 5 mm of the XIN32/XOUT32 pins, and respect the 4-layer PCB layout guideline for the high-speed USB differential pair. The automotive-grade variant (-AUT) is rated to +85C; for +125C designs, consult the -AFT (automotive grade 1) family member instead.
This page synthesizes distributor pricing, parametric comparison with other SAM D51 variants, drop-in alternatives in the same 128-TQFP footprint, and PCB design notes not consolidated in the manufacturer datasheet.
جایگزین‌های drop-in برای ATSAMD51P20A-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 ATSAMD51P20A-AUT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, ADC, DAC, Operating Temperature, Core.
ATSAMD51P20A-AU
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAMD51P20A-AFT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAMD51P19A-AUT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAMD51P19A-AFT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAMD51N20A-AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAMD51P20A-AUT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | ARM Cortex-M4F with FPU |
| Maximum CPU Clock | 120 MHz |
| Flash Memory | 1 MB (1M x 8) with ECC, dual-panel |
| SRAM | 256 KB |
| Operating Voltage Range | 1.71 V to 3.63 V |
| بسته‌بندی | 128-TQFP (14 x 14 mm) |
| تعداد پایه | 128 |
| ADC | 12-bit, up to 1 MSPS |
| DAC | 2 x 12-bit |
| Communication Interfaces | SERCOM (UART/SPI/I2C), USB 2.0 FS, CAN-FD, Ethernet MAC with 1588 PTP |
| محدوده دمای کاری | -40 C to +85 C (automotive grade) |
| نوع نصب | Surface Mount |
| AEC-Q100 Qualification | Yes (automotive grade) |
| وضعیت RoHS | Compliant |
| سطح MSL | 3 (168 hours) |
پیکربندی پین ATSAMD51P20A-AUT
| پین 1 | PB09 — GPIO PB09 / SERCOM pad |
| پین 2 | PB10 — GPIO PB10 / SERCOM pad |
| پین 3 | PB11 — GPIO PB11 / SERCOM pad |
| پین 4 | VDDIO — Digital I/O supply voltage |
| پین 5 | GND — Ground |
| پین 6 | PA12 — GPIO PA12 / SERCOM pad |
| پین 7 | PA13 — GPIO PA13 / SERCOM pad |
| پین 8 | PA14 — GPIO PA14 / SERCOM pad |
| پین 9 | PA15 — GPIO PA15 / SERCOM pad |
| پین 10 | PA16 — GPIO PA16 |
| پین 11 | PA17 — GPIO PA17 |
| پین 12 | VDDIO — Digital I/O supply voltage |
| پین 13 | GND — Ground |
| پین 14 | PA18 — GPIO PA18 |
| پین 15 | PA19 — GPIO PA19 |
| پین 16 | PA20 — GPIO PA20 |
| پین 17 | PA21 — GPIO PA21 |
| پین 18 | PB12 — GPIO PB12 / SERCOM pad |
| پین 19 | PB13 — GPIO PB13 / SERCOM pad |
| پین 20 | PB14 — GPIO PB14 / SERCOM pad |
| پین 21 | PB15 — GPIO PB15 / SERCOM pad |
| پین 22 | PA22 — GPIO PA22 |
| پین 23 | PA23 — GPIO PA23 |
| پین 24 | PA24 — GPIO PA24 |
| پین 25 | PA25 — GPIO PA25 |
| پین 26 | GND — Ground |
| پین 27 | VDDIO — Digital I/O supply voltage |
| پین 28 | PB16 — GPIO PB16 |
| پین 29 | PB17 — GPIO PB17 |
| پین 30 | PB18 — GPIO PB18 |
| پین 31 | PB19 — GPIO PB19 |
| پین 32 | PB20 — GPIO PB20 |
| پین 33 | PB21 — GPIO PB21 |
| پین 34 | PA26 — GPIO PA26 |
| پین 35 | PA27 — GPIO PA27 |
| پین 36 | PA28 — GPIO PA28 |
| پین 37 | PA29 — GPIO PA29 |
| پین 38 | PA30 — GPIO PA30 |
| پین 39 | PA31 — GPIO PA31 |
| پین 40 | GND — Ground |
| پین 41 | VDDIO — Digital I/O supply voltage |
| پین 42 | PB22 — GPIO PB22 |
| پین 43 | PB23 — GPIO PB23 |
| پین 44 | PB24 — GPIO PB24 |
| پین 45 | PB25 — GPIO PB25 |
| پین 46 | PB26 — GPIO PB26 |
| پین 47 | PB27 — GPIO PB27 |
| پین 48 | PB28 — GPIO PB28 |
| پین 49 | PB29 — GPIO PB29 |
| پین 50 | PB30 — GPIO PB30 |
| پین 51 | PB31 — GPIO PB31 |
| پین 52 | PC00 — GPIO PC00 |
| پین 53 | PC01 — GPIO PC01 |
| پین 54 | PC02 — GPIO PC02 |
| پین 55 | PC03 — GPIO PC03 |
| پین 56 | VDDIO — Digital I/O supply voltage |
| پین 57 | GND — Ground |
| پین 58 | PC04 — GPIO PC04 |
| پین 59 | PC05 — GPIO PC05 |
| پین 60 | PC06 — GPIO PC06 |
| پین 61 | PC07 — GPIO PC07 |
| پین 62 | PC08 — GPIO PC08 |
| پین 63 | PC09 — GPIO PC09 |
| پین 64 | PC10 — GPIO PC10 |
| پین 65 | PC11 — GPIO PC11 |
| پین 66 | PC12 — GPIO PC12 |
| پین 67 | PC13 — GPIO PC13 |
| پین 68 | PC14 — GPIO PC14 |
| پین 69 | PC15 — GPIO PC15 |
| پین 70 | PC16 — GPIO PC16 |
| پین 71 | PC17 — GPIO PC17 |
| پین 72 | PC18 — GPIO PC18 |
| پین 73 | PC19 — GPIO PC19 |
| پین 74 | PC20 — GPIO PC20 |
| پین 75 | PC21 — GPIO PC21 |
| پین 76 | VDDIO — Digital I/O supply voltage |
| پین 77 | GND — Ground |
| پین 78 | PC22 — GPIO PC22 |
| پین 79 | PC23 — GPIO PC23 |
| پین 80 | PC24 — GPIO PC24 |
| پین 81 | PC25 — GPIO PC25 |
| پین 82 | PC26 — GPIO PC26 |
| پین 83 | PC27 — GPIO PC27 |
| پین 84 | PC28 — GPIO PC28 |
| پین 85 | PA00 — GPIO PA00 / XIN32 |
| پین 86 | PA01 — GPIO PA01 / XOUT32 |
| پین 87 | PA02 — GPIO PA02 / ADC AIN0 |
| پین 88 | PA03 — GPIO PA03 / ADC AIN1 |
| پین 89 | VDDANA — Analog supply voltage |
| پین 90 | GNDANA — Analog ground |
| پین 91 | PA04 — GPIO PA04 / ADC AIN2 / VREF |
| پین 92 | PA05 — GPIO PA05 / ADC AIN3 |
| پین 93 | PA06 — GPIO PA06 / ADC AIN4 |
| پین 94 | PA07 — GPIO PA07 / ADC AIN5 |
| پین 95 | PA08 — GPIO PA08 / ADC AIN6 |
| پین 96 | PA09 — GPIO PA09 / ADC AIN7 |
| پین 97 | VDDIO — Digital I/O supply voltage |
| پین 98 | GND — Ground |
| پین 99 | VDDCORE — Core voltage (internal LDO output) |
| پین 100 | VDDIO — Digital I/O supply voltage |
| پین 101 | PA10 — GPIO PA10 / ADC AIN8 |
| پین 102 | PA11 — GPIO PA11 / ADC AIN9 |
| پین 103 | PB00 — GPIO PB00 |
| پین 104 | PB01 — GPIO PB01 |
| پین 105 | PB02 — GPIO PB02 |
| پین 106 | PB03 — GPIO PB03 |
| پین 107 | PB04 — GPIO PB04 |
| پین 108 | PB05 — GPIO PB05 |
| پین 109 | PB06 — GPIO PB06 |
| پین 110 | PB07 — GPIO PB07 |
| پین 111 | PB08 — GPIO PB08 |
| پین 112 | RESETN — Active-low reset input |
| پین 113 | SWDIO — Serial Wire Debug I/O |
| پین 114 | SWCLK — Serial Wire Debug clock |
| پین 115 | GND — Ground |
| پین 116 | VDDIO — Digital I/O supply voltage |
| پین 117 | XIN — Crystal oscillator input |
| پین 118 | XOUT — Crystal oscillator output |
| پین 119 | GND — Ground |
| پین 120 | VDDIO — Digital I/O supply voltage |
| پین 121 | USB_DP — USB D+ pin |
| پین 122 | USB_DM — USB D- pin |
| پین 123 | VDDUSB — USB transceiver supply |
| پین 124 | GND — Ground |
| پین 125 | PA00 — GPIO PA00 / XIN32 (alt function) |
| پین 126 | PA01 — GPIO PA01 / XOUT32 (alt function) |
| پین 127 | PA02 — GPIO PA02 / DAC VOUT0 |
| پین 128 | PA03 — GPIO PA03 / DAC VOUT1 |
کاربردهای معمول
ATSAMD51P20A-AUT مناسب است برای 7 کاربردs: Automotive Body Electronics Modules, Industrial HMI Panels, Building Automation Controllers, IoT Edge Gateways with USB or Ethernet, Sensor Fusion Hubs, Portable Medical Devices, Audio Processing and Synthesis.
Automotive Body Electronics Modules
The ATSAMD51P20A-AUT fits automotive body controllers (BCM, HVAC, lighting modules) thanks to its AEC-Q100 qualification and integrated CAN-FD peripheral. The 120 MHz Cortex-M4F with FPU handles CAN-FD message parsing at 2 Mbps while running real-time body-control logic without CPU overload. The 1 MB dual-panel Flash supports read-while-write OTA firmware updates over CAN or UDS, a key requirement for modern BCM designs. Its 12-bit 1 MSPS ADC reads multiple sensor inputs (temperature, current, position) for closed-loop body-control loops. The -AUT grade meets -40 C to +85 C ambient requirements typical for body module locations.
پیشنهادی
Industrial HMI Panels
The ATSAMD51P20A-AUT drives industrial HMI panels with TFT LCD controllers, capacitive touch interfaces, and real-time Ethernet connectivity. The integrated TFT controller supports resolutions up to 800x480 with 24-bit color, eliminating the need for an external graphics controller and reducing BOM cost. The 120 MHz Cortex-M4F executes LVGL or emWin graphics libraries at 60 FPS while leaving CPU headroom for protocol handling. Ethernet MAC with 1588 PTP enables precise time synchronization for industrial protocols such as EtherCAT, PROFINET, or Modbus TCP. The 1 MB Flash stores full font tables and graphics assets.
پیشنهادی
Building Automation Controllers
The ATSAMD51P20A-AUT acts as the central controller in building automation systems, managing HVAC, lighting, access control, and energy metering over RS-485, CAN, or Ethernet. The 6 SERCOM channels provide flexible UART/SPI/I2C configuration for connecting multiple sensor and actuator buses simultaneously. The 256 KB SRAM handles Modbus and BACnet message buffers, while the 1 MB Flash supports full protocol stacks plus application firmware. The Cortex-M4F FPU executes floating-point control loops for HVAC damper and valve positioning. AEC-Q100 qualification supports installations in harsh environments such as mechanical rooms or outdoor enclosures.
پیشنهادی
IoT Edge Gateways with USB or Ethernet
The ATSAMD51P20A-AUT serves as a USB or Ethernet-attached IoT edge gateway, aggregating sensor data from local peripherals and publishing it to the cloud via MQTT or HTTP. The on-chip USB 2.0 Full-Speed PHY directly connects to a USB Type-C connector without external components, simplifying the BOM. The integrated Ethernet MAC with 1588 PTP provides deterministic wired connectivity for industrial IoT deployments. The Cortex-M4F with FPU runs TinyML inference models (TensorFlow Lite Micro) at the edge, enabling local anomaly detection before cloud upload. The 1 MB dual-panel Flash allows A/B firmware partitions for safe OTA updates.
پیشنهادی
Sensor Fusion Hubs
The ATSAMD51P20A-AUT acts as a sensor fusion hub combining IMU, pressure, temperature, and humidity sensors via multiple I2C/SPI buses. The Cortex-M4F with FPU and DSP extensions runs sensor fusion algorithms (Madgwick, Mahony, or custom Kalman filters) at 1 kHz update rates with low latency. The 12-bit 1 MSPS ADC samples analog sensors alongside digital sensor data via the SERCOM peripherals. The 256 KB SRAM buffers sensor history for short-term trend analysis. The automotive qualification allows deployment in vehicle sensor clusters and ADAS development platforms.
پیشنهادی
Portable Medical Devices
The ATSAMD51P20A-AUT fits portable medical monitoring devices such as pulse oximeters, blood pressure monitors, and portable ECGs. The Cortex-M4F DSP instructions accelerate FFT-based heart-rate variability analysis and digital filter computations for ECG signal conditioning. The 12-bit ADC captures bioelectric signals with sufficient resolution for diagnostic-grade measurements. The low-power sleep modes (down to 5 uA in retention) extend battery life in portable form factors. The 1 MB Flash stores calibration data and waveform history for review. Automotive-grade qualification indirectly supports IEC 60601 documentation requirements via Microchip's safety documentation library.
پیشنهادی
Audio Processing and Synthesis
The ATSAMD51P20A-AUT supports audio processing applications such as digital effects pedals, synthesizers, and audio mixers. The I2S peripheral interfaces directly to 24-bit audio codecs at sample rates up to 192 kHz without external logic. The Cortex-M4F FPU executes audio DSP algorithms (biquad filters, FFT, convolution reverb) in real time across multiple audio channels. The 256 KB SRAM buffers audio frames at low latency. The 1 MB Flash stores wavetables and preset banks for synthesizer applications. The automotive qualification supports installations in vehicle infotainment and active-noise-cancellation systems.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ATSAMD51P20A-AUT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ATSAMD51P20A-AU | ATSAMD51P20A-AFT | ATSAMD51P19A-AUT | ATSAMD51P19A-AFT | ATSAMD51N20A-AU |
|---|---|---|---|---|---|---|
| Package | 128-TQFP (14x14 mm) | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Clock | 120 MHz Cortex-M4F | 120 MHz Cortex-M4F | 120 MHz Cortex-M4F | 120 MHz Cortex-M4F | 120 MHz Cortex-M4F | 120 MHz Cortex-M4F |
| Flash | 1 MB | 1 MB | 1 MB | 512 KB | 512 KB | 1 MB |
| SRAM | 256 KB | 256 KB | 256 KB | 192 KB | 192 KB | 256 KB |
| AEC-Q100 Grade | Yes (Grade 2, +85 C) | No (industrial only) | Yes (Grade 1, +125 C) | Yes (Grade 2, +85 C) | Yes (Grade 1, +125 C) | No (industrial only) |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C |
| USB PHY | Yes (FS/HS on selected pins) | Yes | Yes | Yes | Yes | Yes |
| CAN-FD | Yes | Yes | Yes | Yes | Yes | Yes |
| Approx. Unit Price (qty 1000) | $8.25 | $7.50 | $9.20 | $7.10 | $8.05 | $7.85 |
تفاوت‌های کلیدی
- AEC-Q100 qualification at Grade 2 (+85 C) (در مقابلATSAMD51P20A-AU)
- Higher operating temperature range (+125 C) on the -AFT variant (در مقابلATSAMD51P20A-AFT)
- Smaller Flash and SRAM versus the P20A family (در مقابلATSAMD51P19A-AUT)
یادداشت‌های طراحی
Place a 100 nF 0402 ceramic decoupling capacitor within 2 mm of every VDDIO pin, and a single 4.7 uF X5R bulk capacitor near the regulator output for the VDDANA rail. The VDDCORE pin should connect to the internal LDO output and require its own 1 uF decoupling cap. The USB VDDUSB pin requires an additional 1 uF cap. Following this decoupling strategy keeps the 120 MHz core's switching noise below the ADC noise floor.
For USB 2.0 Full-Speed signaling, route the USB_DP and USB_DM pair as a 90-ohm differential with length matching within 150 mil and a maximum length of 50 mm. Use a 4-layer PCB with a continuous ground plane below the USB traces. Place the 22-ohm source-series termination resistors within 5 mm of the ATSAMD51 USB pins. These guidelines ensure USB compliance with the Full-Speed signal-integrity eye pattern.
The ATSAMD51P20A-AUT's SERCOM peripheral is highly flexible, but each SERCOM instance requires explicit pin-mux configuration in the MUX register before first use - a common pitfall for engineers migrating from fixed-pin peripherals. The 32.768 kHz crystal must be placed within 5 mm of the XIN32/XOUT32 pins (PA00/PA01) with a grounded guard ring, or RTC accuracy degrades significantly. Always configure the brown-out detector (BOD) at startup before any flash writes to prevent data corruption.
Estimated: At 120 MHz core clock with all peripherals active, the ATSAMD51P20A-AUT draws approximately 70 mA at 3.3 V (230 mW). The 128-TQFP package has a theta_JA of approximately 50 C/W on a 4-layer JEDEC test board, giving a junction-to-ambient rise of about 12 C. Within the automotive -40 C to +85 C range, no heatsink is required for this dissipation level, but the PCB copper pour around the thermal pad region of the package should be maximized for margin.
اطلاعات انطباق
AEC-Q100 Grade 2 qualified per Microchip SAM D51 product page. RoHS and REACH compliant per Microchip environmental documentation.
