ATSAMD51P20A-AUT - 120MHz Cortex-M4F MCU 1MB Flash | Microchip
N.º da peça: ATSAMD51P20A-AUT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $12.85 | $12,85 |
| 10 | $11.95 | $119,50 |
| 100 | $10.42 | $1.042,00 |
| 500 | $9.18 | $4.590,00 |
| 1.000 | $8.25 | $8.250,00 |
ATSAMD51P20A-AUT Visão geral
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.
Alternativas drop-in para ATSAMD51P20A-AUT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATSAMD51P20A-AUT (mesmo formato e footprint) — diferindo em Package, ADC, DAC, Operating Temperature, Core.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAMD51P20A-AU
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAMD51P20A-AFT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAMD51P19A-AUT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAMD51P19A-AFT
✅ Drop-In✓ Em estoque
$6.18 / unidade
Ver ficha técnica →ATSAMD51N20A-AU
✅ Drop-In✓ Em estoque
$8.49 / unidade
Ver ficha técnica →ATSAMD51P20A-AUT Classificações máximas e características elétricas
| 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 |
| Encapsulamento | 128-TQFP (14 x 14 mm) |
| Contagem de pinos | 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 |
| Faixa de temperatura de operação | -40 C to +85 C (automotive grade) |
| Tipo de montagem | Surface Mount |
| AEC-Q100 Qualification | Yes (automotive grade) |
| Status RoHS | Compliant |
| Nível MSL | 3 (168 hours) |
Configuração de pinos do ATSAMD51P20A-AUT
| Pino 1 | PB09 — GPIO PB09 / SERCOM pad |
| Pino 2 | PB10 — GPIO PB10 / SERCOM pad |
| Pino 3 | PB11 — GPIO PB11 / SERCOM pad |
| Pino 4 | VDDIO — Digital I/O supply voltage |
| Pino 5 | GND — Ground |
| Pino 6 | PA12 — GPIO PA12 / SERCOM pad |
| Pino 7 | PA13 — GPIO PA13 / SERCOM pad |
| Pino 8 | PA14 — GPIO PA14 / SERCOM pad |
| Pino 9 | PA15 — GPIO PA15 / SERCOM pad |
| Pino 10 | PA16 — GPIO PA16 |
| Pino 11 | PA17 — GPIO PA17 |
| Pino 12 | VDDIO — Digital I/O supply voltage |
| Pino 13 | GND — Ground |
| Pino 14 | PA18 — GPIO PA18 |
| Pino 15 | PA19 — GPIO PA19 |
| Pino 16 | PA20 — GPIO PA20 |
| Pino 17 | PA21 — GPIO PA21 |
| Pino 18 | PB12 — GPIO PB12 / SERCOM pad |
| Pino 19 | PB13 — GPIO PB13 / SERCOM pad |
| Pino 20 | PB14 — GPIO PB14 / SERCOM pad |
| Pino 21 | PB15 — GPIO PB15 / SERCOM pad |
| Pino 22 | PA22 — GPIO PA22 |
| Pino 23 | PA23 — GPIO PA23 |
| Pino 24 | PA24 — GPIO PA24 |
| Pino 25 | PA25 — GPIO PA25 |
| Pino 26 | GND — Ground |
| Pino 27 | VDDIO — Digital I/O supply voltage |
| Pino 28 | PB16 — GPIO PB16 |
| Pino 29 | PB17 — GPIO PB17 |
| Pino 30 | PB18 — GPIO PB18 |
| Pino 31 | PB19 — GPIO PB19 |
| Pino 32 | PB20 — GPIO PB20 |
| Pino 33 | PB21 — GPIO PB21 |
| Pino 34 | PA26 — GPIO PA26 |
| Pino 35 | PA27 — GPIO PA27 |
| Pino 36 | PA28 — GPIO PA28 |
| Pino 37 | PA29 — GPIO PA29 |
| Pino 38 | PA30 — GPIO PA30 |
| Pino 39 | PA31 — GPIO PA31 |
| Pino 40 | GND — Ground |
| Pino 41 | VDDIO — Digital I/O supply voltage |
| Pino 42 | PB22 — GPIO PB22 |
| Pino 43 | PB23 — GPIO PB23 |
| Pino 44 | PB24 — GPIO PB24 |
| Pino 45 | PB25 — GPIO PB25 |
| Pino 46 | PB26 — GPIO PB26 |
| Pino 47 | PB27 — GPIO PB27 |
| Pino 48 | PB28 — GPIO PB28 |
| Pino 49 | PB29 — GPIO PB29 |
| Pino 50 | PB30 — GPIO PB30 |
| Pino 51 | PB31 — GPIO PB31 |
| Pino 52 | PC00 — GPIO PC00 |
| Pino 53 | PC01 — GPIO PC01 |
| Pino 54 | PC02 — GPIO PC02 |
| Pino 55 | PC03 — GPIO PC03 |
| Pino 56 | VDDIO — Digital I/O supply voltage |
| Pino 57 | GND — Ground |
| Pino 58 | PC04 — GPIO PC04 |
| Pino 59 | PC05 — GPIO PC05 |
| Pino 60 | PC06 — GPIO PC06 |
| Pino 61 | PC07 — GPIO PC07 |
| Pino 62 | PC08 — GPIO PC08 |
| Pino 63 | PC09 — GPIO PC09 |
| Pino 64 | PC10 — GPIO PC10 |
| Pino 65 | PC11 — GPIO PC11 |
| Pino 66 | PC12 — GPIO PC12 |
| Pino 67 | PC13 — GPIO PC13 |
| Pino 68 | PC14 — GPIO PC14 |
| Pino 69 | PC15 — GPIO PC15 |
| Pino 70 | PC16 — GPIO PC16 |
| Pino 71 | PC17 — GPIO PC17 |
| Pino 72 | PC18 — GPIO PC18 |
| Pino 73 | PC19 — GPIO PC19 |
| Pino 74 | PC20 — GPIO PC20 |
| Pino 75 | PC21 — GPIO PC21 |
| Pino 76 | VDDIO — Digital I/O supply voltage |
| Pino 77 | GND — Ground |
| Pino 78 | PC22 — GPIO PC22 |
| Pino 79 | PC23 — GPIO PC23 |
| Pino 80 | PC24 — GPIO PC24 |
| Pino 81 | PC25 — GPIO PC25 |
| Pino 82 | PC26 — GPIO PC26 |
| Pino 83 | PC27 — GPIO PC27 |
| Pino 84 | PC28 — GPIO PC28 |
| Pino 85 | PA00 — GPIO PA00 / XIN32 |
| Pino 86 | PA01 — GPIO PA01 / XOUT32 |
| Pino 87 | PA02 — GPIO PA02 / ADC AIN0 |
| Pino 88 | PA03 — GPIO PA03 / ADC AIN1 |
| Pino 89 | VDDANA — Analog supply voltage |
| Pino 90 | GNDANA — Analog ground |
| Pino 91 | PA04 — GPIO PA04 / ADC AIN2 / VREF |
| Pino 92 | PA05 — GPIO PA05 / ADC AIN3 |
| Pino 93 | PA06 — GPIO PA06 / ADC AIN4 |
| Pino 94 | PA07 — GPIO PA07 / ADC AIN5 |
| Pino 95 | PA08 — GPIO PA08 / ADC AIN6 |
| Pino 96 | PA09 — GPIO PA09 / ADC AIN7 |
| Pino 97 | VDDIO — Digital I/O supply voltage |
| Pino 98 | GND — Ground |
| Pino 99 | VDDCORE — Core voltage (internal LDO output) |
| Pino 100 | VDDIO — Digital I/O supply voltage |
| Pino 101 | PA10 — GPIO PA10 / ADC AIN8 |
| Pino 102 | PA11 — GPIO PA11 / ADC AIN9 |
| Pino 103 | PB00 — GPIO PB00 |
| Pino 104 | PB01 — GPIO PB01 |
| Pino 105 | PB02 — GPIO PB02 |
| Pino 106 | PB03 — GPIO PB03 |
| Pino 107 | PB04 — GPIO PB04 |
| Pino 108 | PB05 — GPIO PB05 |
| Pino 109 | PB06 — GPIO PB06 |
| Pino 110 | PB07 — GPIO PB07 |
| Pino 111 | PB08 — GPIO PB08 |
| Pino 112 | RESETN — Active-low reset input |
| Pino 113 | SWDIO — Serial Wire Debug I/O |
| Pino 114 | SWCLK — Serial Wire Debug clock |
| Pino 115 | GND — Ground |
| Pino 116 | VDDIO — Digital I/O supply voltage |
| Pino 117 | XIN — Crystal oscillator input |
| Pino 118 | XOUT — Crystal oscillator output |
| Pino 119 | GND — Ground |
| Pino 120 | VDDIO — Digital I/O supply voltage |
| Pino 121 | USB_DP — USB D+ pin |
| Pino 122 | USB_DM — USB D- pin |
| Pino 123 | VDDUSB — USB transceiver supply |
| Pino 124 | GND — Ground |
| Pino 125 | PA00 — GPIO PA00 / XIN32 (alt function) |
| Pino 126 | PA01 — GPIO PA01 / XOUT32 (alt function) |
| Pino 127 | PA02 — GPIO PA02 / DAC VOUT0 |
| Pino 128 | PA03 — GPIO PA03 / DAC VOUT1 |
Aplicações típicas
ATSAMD51P20A-AUT é adequado para 7 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAMD51P20A-AUT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- AEC-Q100 qualification at Grade 2 (+85 C) (vs ATSAMD51P20A-AU)
- Higher operating temperature range (+125 C) on the -AFT variant (vs ATSAMD51P20A-AFT)
- Smaller Flash and SRAM versus the P20A family (vs ATSAMD51P19A-AUT)
Notas de projeto
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.
Informações de conformidade
AEC-Q100 Grade 2 qualified per Microchip SAM D51 product page. RoHS and REACH compliant per Microchip environmental documentation.
