ATSAMD51P20A-AUT - 120MHz Cortex-M4F MCU 1MB Flash | Microchip
MPN: ATSAMD51P20A-AUT ✓ Hoạt độngATSAMD51P20A-AUT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD51P20A-AUT — 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 ATSAMD51P20A-AUT (cùng hình factor và footprint) — khác nhau ở Package, ADC, DAC, Operating Temperature, Core.
ATSAMD51P20A-AU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD51P20A-AFT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD51P19A-AUT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD51P19A-AFT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51N20A-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51P20A-AUT Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 128-TQFP (14 x 14 mm) |
| Số chân | 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 |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (automotive grade) |
| Kiểu lắp đặt | Surface Mount |
| AEC-Q100 Qualification | Yes (automotive grade) |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (168 hours) |
Cấu hình chân ATSAMD51P20A-AUT
| Chân 1 | PB09 — GPIO PB09 / SERCOM pad |
| Chân 2 | PB10 — GPIO PB10 / SERCOM pad |
| Chân 3 | PB11 — GPIO PB11 / SERCOM pad |
| Chân 4 | VDDIO — Digital I/O supply voltage |
| Chân 5 | GND — Ground |
| Chân 6 | PA12 — GPIO PA12 / SERCOM pad |
| Chân 7 | PA13 — GPIO PA13 / SERCOM pad |
| Chân 8 | PA14 — GPIO PA14 / SERCOM pad |
| Chân 9 | PA15 — GPIO PA15 / SERCOM pad |
| Chân 10 | PA16 — GPIO PA16 |
| Chân 11 | PA17 — GPIO PA17 |
| Chân 12 | VDDIO — Digital I/O supply voltage |
| Chân 13 | GND — Ground |
| Chân 14 | PA18 — GPIO PA18 |
| Chân 15 | PA19 — GPIO PA19 |
| Chân 16 | PA20 — GPIO PA20 |
| Chân 17 | PA21 — GPIO PA21 |
| Chân 18 | PB12 — GPIO PB12 / SERCOM pad |
| Chân 19 | PB13 — GPIO PB13 / SERCOM pad |
| Chân 20 | PB14 — GPIO PB14 / SERCOM pad |
| Chân 21 | PB15 — GPIO PB15 / SERCOM pad |
| Chân 22 | PA22 — GPIO PA22 |
| Chân 23 | PA23 — GPIO PA23 |
| Chân 24 | PA24 — GPIO PA24 |
| Chân 25 | PA25 — GPIO PA25 |
| Chân 26 | GND — Ground |
| Chân 27 | VDDIO — Digital I/O supply voltage |
| Chân 28 | PB16 — GPIO PB16 |
| Chân 29 | PB17 — GPIO PB17 |
| Chân 30 | PB18 — GPIO PB18 |
| Chân 31 | PB19 — GPIO PB19 |
| Chân 32 | PB20 — GPIO PB20 |
| Chân 33 | PB21 — GPIO PB21 |
| Chân 34 | PA26 — GPIO PA26 |
| Chân 35 | PA27 — GPIO PA27 |
| Chân 36 | PA28 — GPIO PA28 |
| Chân 37 | PA29 — GPIO PA29 |
| Chân 38 | PA30 — GPIO PA30 |
| Chân 39 | PA31 — GPIO PA31 |
| Chân 40 | GND — Ground |
| Chân 41 | VDDIO — Digital I/O supply voltage |
| Chân 42 | PB22 — GPIO PB22 |
| Chân 43 | PB23 — GPIO PB23 |
| Chân 44 | PB24 — GPIO PB24 |
| Chân 45 | PB25 — GPIO PB25 |
| Chân 46 | PB26 — GPIO PB26 |
| Chân 47 | PB27 — GPIO PB27 |
| Chân 48 | PB28 — GPIO PB28 |
| Chân 49 | PB29 — GPIO PB29 |
| Chân 50 | PB30 — GPIO PB30 |
| Chân 51 | PB31 — GPIO PB31 |
| Chân 52 | PC00 — GPIO PC00 |
| Chân 53 | PC01 — GPIO PC01 |
| Chân 54 | PC02 — GPIO PC02 |
| Chân 55 | PC03 — GPIO PC03 |
| Chân 56 | VDDIO — Digital I/O supply voltage |
| Chân 57 | GND — Ground |
| Chân 58 | PC04 — GPIO PC04 |
| Chân 59 | PC05 — GPIO PC05 |
| Chân 60 | PC06 — GPIO PC06 |
| Chân 61 | PC07 — GPIO PC07 |
| Chân 62 | PC08 — GPIO PC08 |
| Chân 63 | PC09 — GPIO PC09 |
| Chân 64 | PC10 — GPIO PC10 |
| Chân 65 | PC11 — GPIO PC11 |
| Chân 66 | PC12 — GPIO PC12 |
| Chân 67 | PC13 — GPIO PC13 |
| Chân 68 | PC14 — GPIO PC14 |
| Chân 69 | PC15 — GPIO PC15 |
| Chân 70 | PC16 — GPIO PC16 |
| Chân 71 | PC17 — GPIO PC17 |
| Chân 72 | PC18 — GPIO PC18 |
| Chân 73 | PC19 — GPIO PC19 |
| Chân 74 | PC20 — GPIO PC20 |
| Chân 75 | PC21 — GPIO PC21 |
| Chân 76 | VDDIO — Digital I/O supply voltage |
| Chân 77 | GND — Ground |
| Chân 78 | PC22 — GPIO PC22 |
| Chân 79 | PC23 — GPIO PC23 |
| Chân 80 | PC24 — GPIO PC24 |
| Chân 81 | PC25 — GPIO PC25 |
| Chân 82 | PC26 — GPIO PC26 |
| Chân 83 | PC27 — GPIO PC27 |
| Chân 84 | PC28 — GPIO PC28 |
| Chân 85 | PA00 — GPIO PA00 / XIN32 |
| Chân 86 | PA01 — GPIO PA01 / XOUT32 |
| Chân 87 | PA02 — GPIO PA02 / ADC AIN0 |
| Chân 88 | PA03 — GPIO PA03 / ADC AIN1 |
| Chân 89 | VDDANA — Analog supply voltage |
| Chân 90 | GNDANA — Analog ground |
| Chân 91 | PA04 — GPIO PA04 / ADC AIN2 / VREF |
| Chân 92 | PA05 — GPIO PA05 / ADC AIN3 |
| Chân 93 | PA06 — GPIO PA06 / ADC AIN4 |
| Chân 94 | PA07 — GPIO PA07 / ADC AIN5 |
| Chân 95 | PA08 — GPIO PA08 / ADC AIN6 |
| Chân 96 | PA09 — GPIO PA09 / ADC AIN7 |
| Chân 97 | VDDIO — Digital I/O supply voltage |
| Chân 98 | GND — Ground |
| Chân 99 | VDDCORE — Core voltage (internal LDO output) |
| Chân 100 | VDDIO — Digital I/O supply voltage |
| Chân 101 | PA10 — GPIO PA10 / ADC AIN8 |
| Chân 102 | PA11 — GPIO PA11 / ADC AIN9 |
| Chân 103 | PB00 — GPIO PB00 |
| Chân 104 | PB01 — GPIO PB01 |
| Chân 105 | PB02 — GPIO PB02 |
| Chân 106 | PB03 — GPIO PB03 |
| Chân 107 | PB04 — GPIO PB04 |
| Chân 108 | PB05 — GPIO PB05 |
| Chân 109 | PB06 — GPIO PB06 |
| Chân 110 | PB07 — GPIO PB07 |
| Chân 111 | PB08 — GPIO PB08 |
| Chân 112 | RESETN — Active-low reset input |
| Chân 113 | SWDIO — Serial Wire Debug I/O |
| Chân 114 | SWCLK — Serial Wire Debug clock |
| Chân 115 | GND — Ground |
| Chân 116 | VDDIO — Digital I/O supply voltage |
| Chân 117 | XIN — Crystal oscillator input |
| Chân 118 | XOUT — Crystal oscillator output |
| Chân 119 | GND — Ground |
| Chân 120 | VDDIO — Digital I/O supply voltage |
| Chân 121 | USB_DP — USB D+ pin |
| Chân 122 | USB_DM — USB D- pin |
| Chân 123 | VDDUSB — USB transceiver supply |
| Chân 124 | GND — Ground |
| Chân 125 | PA00 — GPIO PA00 / XIN32 (alt function) |
| Chân 126 | PA01 — GPIO PA01 / XOUT32 (alt function) |
| Chân 127 | PA02 — GPIO PA02 / DAC VOUT0 |
| Chân 128 | PA03 — GPIO PA03 / DAC VOUT1 |
Ứng dụng tiêu biểu
ATSAMD51P20A-AUT phù hợp cho 7 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD51P20A-AUT — 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 | 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 |
Bảo phân biệt quan trọng
- AEC-Q100 qualification at Grade 2 (+85 C) (vsATSAMD51P20A-AU)
- Higher operating temperature range (+125 C) on the -AFT variant (vsATSAMD51P20A-AFT)
- Smaller Flash and SRAM versus the P20A family (vsATSAMD51P19A-AUT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
AEC-Q100 Grade 2 qualified per Microchip SAM D51 product page. RoHS and REACH compliant per Microchip environmental documentation.
