ATSAMD51P20A-AUT - 120MHz Cortex-M4F MCU 1MB Flash | Microchip
MPN: ATSAMD51P20A-AUT ✓ نشطATSAMD51P20A-AUT نظرة عامة
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.
بدائل مباشرة لـ ATSAMD51P20A-AUT — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع ATSAMD51P20A-AUT (نفس عامل الشكل والبصمة) — يختلف في Package, ADC, DAC, Operating Temperature, Core.
ATSAMD51P20A-AU
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ATSAMD51P20A-AFT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ATSAMD51P19A-AUT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ATSAMD51P19A-AFT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATSAMD51N20A-AU
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATSAMD51P20A-AUT الحدود القصوى والخصائص الكهربائية
| 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 |
| العلبة | 128-TQFP (14 x 14 mm) |
| عدد الأطراف | 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 |
| نطاق درجة حرارة التشغيل | -40 C to +85 C (automotive grade) |
| نوع التركيب | Surface Mount |
| AEC-Q100 Qualification | Yes (automotive grade) |
| حالة RoHS | Compliant |
| مستوى MSL | 3 (168 hours) |
تكوين أطراف ATSAMD51P20A-AUT
| دبوس 1 | PB09 — GPIO PB09 / SERCOM pad |
| دبوس 2 | PB10 — GPIO PB10 / SERCOM pad |
| دبوس 3 | PB11 — GPIO PB11 / SERCOM pad |
| دبوس 4 | VDDIO — Digital I/O supply voltage |
| دبوس 5 | GND — Ground |
| دبوس 6 | PA12 — GPIO PA12 / SERCOM pad |
| دبوس 7 | PA13 — GPIO PA13 / SERCOM pad |
| دبوس 8 | PA14 — GPIO PA14 / SERCOM pad |
| دبوس 9 | PA15 — GPIO PA15 / SERCOM pad |
| دبوس 10 | PA16 — GPIO PA16 |
| دبوس 11 | PA17 — GPIO PA17 |
| دبوس 12 | VDDIO — Digital I/O supply voltage |
| دبوس 13 | GND — Ground |
| دبوس 14 | PA18 — GPIO PA18 |
| دبوس 15 | PA19 — GPIO PA19 |
| دبوس 16 | PA20 — GPIO PA20 |
| دبوس 17 | PA21 — GPIO PA21 |
| دبوس 18 | PB12 — GPIO PB12 / SERCOM pad |
| دبوس 19 | PB13 — GPIO PB13 / SERCOM pad |
| دبوس 20 | PB14 — GPIO PB14 / SERCOM pad |
| دبوس 21 | PB15 — GPIO PB15 / SERCOM pad |
| دبوس 22 | PA22 — GPIO PA22 |
| دبوس 23 | PA23 — GPIO PA23 |
| دبوس 24 | PA24 — GPIO PA24 |
| دبوس 25 | PA25 — GPIO PA25 |
| دبوس 26 | GND — Ground |
| دبوس 27 | VDDIO — Digital I/O supply voltage |
| دبوس 28 | PB16 — GPIO PB16 |
| دبوس 29 | PB17 — GPIO PB17 |
| دبوس 30 | PB18 — GPIO PB18 |
| دبوس 31 | PB19 — GPIO PB19 |
| دبوس 32 | PB20 — GPIO PB20 |
| دبوس 33 | PB21 — GPIO PB21 |
| دبوس 34 | PA26 — GPIO PA26 |
| دبوس 35 | PA27 — GPIO PA27 |
| دبوس 36 | PA28 — GPIO PA28 |
| دبوس 37 | PA29 — GPIO PA29 |
| دبوس 38 | PA30 — GPIO PA30 |
| دبوس 39 | PA31 — GPIO PA31 |
| دبوس 40 | GND — Ground |
| دبوس 41 | VDDIO — Digital I/O supply voltage |
| دبوس 42 | PB22 — GPIO PB22 |
| دبوس 43 | PB23 — GPIO PB23 |
| دبوس 44 | PB24 — GPIO PB24 |
| دبوس 45 | PB25 — GPIO PB25 |
| دبوس 46 | PB26 — GPIO PB26 |
| دبوس 47 | PB27 — GPIO PB27 |
| دبوس 48 | PB28 — GPIO PB28 |
| دبوس 49 | PB29 — GPIO PB29 |
| دبوس 50 | PB30 — GPIO PB30 |
| دبوس 51 | PB31 — GPIO PB31 |
| دبوس 52 | PC00 — GPIO PC00 |
| دبوس 53 | PC01 — GPIO PC01 |
| دبوس 54 | PC02 — GPIO PC02 |
| دبوس 55 | PC03 — GPIO PC03 |
| دبوس 56 | VDDIO — Digital I/O supply voltage |
| دبوس 57 | GND — Ground |
| دبوس 58 | PC04 — GPIO PC04 |
| دبوس 59 | PC05 — GPIO PC05 |
| دبوس 60 | PC06 — GPIO PC06 |
| دبوس 61 | PC07 — GPIO PC07 |
| دبوس 62 | PC08 — GPIO PC08 |
| دبوس 63 | PC09 — GPIO PC09 |
| دبوس 64 | PC10 — GPIO PC10 |
| دبوس 65 | PC11 — GPIO PC11 |
| دبوس 66 | PC12 — GPIO PC12 |
| دبوس 67 | PC13 — GPIO PC13 |
| دبوس 68 | PC14 — GPIO PC14 |
| دبوس 69 | PC15 — GPIO PC15 |
| دبوس 70 | PC16 — GPIO PC16 |
| دبوس 71 | PC17 — GPIO PC17 |
| دبوس 72 | PC18 — GPIO PC18 |
| دبوس 73 | PC19 — GPIO PC19 |
| دبوس 74 | PC20 — GPIO PC20 |
| دبوس 75 | PC21 — GPIO PC21 |
| دبوس 76 | VDDIO — Digital I/O supply voltage |
| دبوس 77 | GND — Ground |
| دبوس 78 | PC22 — GPIO PC22 |
| دبوس 79 | PC23 — GPIO PC23 |
| دبوس 80 | PC24 — GPIO PC24 |
| دبوس 81 | PC25 — GPIO PC25 |
| دبوس 82 | PC26 — GPIO PC26 |
| دبوس 83 | PC27 — GPIO PC27 |
| دبوس 84 | PC28 — GPIO PC28 |
| دبوس 85 | PA00 — GPIO PA00 / XIN32 |
| دبوس 86 | PA01 — GPIO PA01 / XOUT32 |
| دبوس 87 | PA02 — GPIO PA02 / ADC AIN0 |
| دبوس 88 | PA03 — GPIO PA03 / ADC AIN1 |
| دبوس 89 | VDDANA — Analog supply voltage |
| دبوس 90 | GNDANA — Analog ground |
| دبوس 91 | PA04 — GPIO PA04 / ADC AIN2 / VREF |
| دبوس 92 | PA05 — GPIO PA05 / ADC AIN3 |
| دبوس 93 | PA06 — GPIO PA06 / ADC AIN4 |
| دبوس 94 | PA07 — GPIO PA07 / ADC AIN5 |
| دبوس 95 | PA08 — GPIO PA08 / ADC AIN6 |
| دبوس 96 | PA09 — GPIO PA09 / ADC AIN7 |
| دبوس 97 | VDDIO — Digital I/O supply voltage |
| دبوس 98 | GND — Ground |
| دبوس 99 | VDDCORE — Core voltage (internal LDO output) |
| دبوس 100 | VDDIO — Digital I/O supply voltage |
| دبوس 101 | PA10 — GPIO PA10 / ADC AIN8 |
| دبوس 102 | PA11 — GPIO PA11 / ADC AIN9 |
| دبوس 103 | PB00 — GPIO PB00 |
| دبوس 104 | PB01 — GPIO PB01 |
| دبوس 105 | PB02 — GPIO PB02 |
| دبوس 106 | PB03 — GPIO PB03 |
| دبوس 107 | PB04 — GPIO PB04 |
| دبوس 108 | PB05 — GPIO PB05 |
| دبوس 109 | PB06 — GPIO PB06 |
| دبوس 110 | PB07 — GPIO PB07 |
| دبوس 111 | PB08 — GPIO PB08 |
| دبوس 112 | RESETN — Active-low reset input |
| دبوس 113 | SWDIO — Serial Wire Debug I/O |
| دبوس 114 | SWCLK — Serial Wire Debug clock |
| دبوس 115 | GND — Ground |
| دبوس 116 | VDDIO — Digital I/O supply voltage |
| دبوس 117 | XIN — Crystal oscillator input |
| دبوس 118 | XOUT — Crystal oscillator output |
| دبوس 119 | GND — Ground |
| دبوس 120 | VDDIO — Digital I/O supply voltage |
| دبوس 121 | USB_DP — USB D+ pin |
| دبوس 122 | USB_DM — USB D- pin |
| دبوس 123 | VDDUSB — USB transceiver supply |
| دبوس 124 | GND — Ground |
| دبوس 125 | PA00 — GPIO PA00 / XIN32 (alt function) |
| دبوس 126 | PA01 — GPIO PA01 / XOUT32 (alt function) |
| دبوس 127 | PA02 — GPIO PA02 / DAC VOUT0 |
| دبوس 128 | PA03 — GPIO PA03 / DAC VOUT1 |
التطبيقات النموذجية
ATSAMD51P20A-AUT مناسب لـ 7 التطبيقs: 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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ ATSAMD51P20A-AUT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | 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 |
أبرز الفروقات
- AEC-Q100 qualification at Grade 2 (+85 C) (مقابلATSAMD51P20A-AU)
- Higher operating temperature range (+125 C) on the -AFT variant (مقابلATSAMD51P20A-AFT)
- Smaller Flash and SRAM versus the P20A family (مقابلATSAMD51P19A-AUT)
ملاحظات التصميم
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.
معلومات الامتثال
AEC-Q100 Grade 2 qualified per Microchip SAM D51 product page. RoHS and REACH compliant per Microchip environmental documentation.
