ATSAMD51P20A-AUT - 120MHz Cortex-M4F MCU 1MB Flash | Microchip
MPN: ATSAMD51P20A-AUT ✓ פעילATSAMD51P20A-AUT סקירה
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.
חלופות תחליף ישיר עבור ATSAMD51P20A-AUT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ATSAMD51P20A-AUT (אותו גורם צורה וטביעת רגל) — שונים ב Package, ADC, DAC, Operating Temperature, Core.
ATSAMD51P20A-AU
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ATSAMD51P20A-AFT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ATSAMD51P19A-AUT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ATSAMD51P19A-AFT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAMD51N20A-AU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAMD51P20A-AUT דירוגים מרביים ומאפיינים חשמליים
| 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 |
| מארז | 128-TQFP (14 x 14 mm) |
| מספר פינים | 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 |
| טווח טמפרטורת פעולה | -40 C to +85 C (automotive grade) |
| סוג הרכבה | Surface Mount |
| AEC-Q100 Qualification | Yes (automotive grade) |
| סטטוס RoHS | Compliant |
| רמת MSL | 3 (168 hours) |
תצורת פינים של ATSAMD51P20A-AUT
| פין 1 | PB09 — GPIO PB09 / SERCOM pad |
| פין 2 | PB10 — GPIO PB10 / SERCOM pad |
| פין 3 | PB11 — GPIO PB11 / SERCOM pad |
| פין 4 | VDDIO — Digital I/O supply voltage |
| פין 5 | GND — Ground |
| פין 6 | PA12 — GPIO PA12 / SERCOM pad |
| פין 7 | PA13 — GPIO PA13 / SERCOM pad |
| פין 8 | PA14 — GPIO PA14 / SERCOM pad |
| פין 9 | PA15 — GPIO PA15 / SERCOM pad |
| פין 10 | PA16 — GPIO PA16 |
| פין 11 | PA17 — GPIO PA17 |
| פין 12 | VDDIO — Digital I/O supply voltage |
| פין 13 | GND — Ground |
| פין 14 | PA18 — GPIO PA18 |
| פין 15 | PA19 — GPIO PA19 |
| פין 16 | PA20 — GPIO PA20 |
| פין 17 | PA21 — GPIO PA21 |
| פין 18 | PB12 — GPIO PB12 / SERCOM pad |
| פין 19 | PB13 — GPIO PB13 / SERCOM pad |
| פין 20 | PB14 — GPIO PB14 / SERCOM pad |
| פין 21 | PB15 — GPIO PB15 / SERCOM pad |
| פין 22 | PA22 — GPIO PA22 |
| פין 23 | PA23 — GPIO PA23 |
| פין 24 | PA24 — GPIO PA24 |
| פין 25 | PA25 — GPIO PA25 |
| פין 26 | GND — Ground |
| פין 27 | VDDIO — Digital I/O supply voltage |
| פין 28 | PB16 — GPIO PB16 |
| פין 29 | PB17 — GPIO PB17 |
| פין 30 | PB18 — GPIO PB18 |
| פין 31 | PB19 — GPIO PB19 |
| פין 32 | PB20 — GPIO PB20 |
| פין 33 | PB21 — GPIO PB21 |
| פין 34 | PA26 — GPIO PA26 |
| פין 35 | PA27 — GPIO PA27 |
| פין 36 | PA28 — GPIO PA28 |
| פין 37 | PA29 — GPIO PA29 |
| פין 38 | PA30 — GPIO PA30 |
| פין 39 | PA31 — GPIO PA31 |
| פין 40 | GND — Ground |
| פין 41 | VDDIO — Digital I/O supply voltage |
| פין 42 | PB22 — GPIO PB22 |
| פין 43 | PB23 — GPIO PB23 |
| פין 44 | PB24 — GPIO PB24 |
| פין 45 | PB25 — GPIO PB25 |
| פין 46 | PB26 — GPIO PB26 |
| פין 47 | PB27 — GPIO PB27 |
| פין 48 | PB28 — GPIO PB28 |
| פין 49 | PB29 — GPIO PB29 |
| פין 50 | PB30 — GPIO PB30 |
| פין 51 | PB31 — GPIO PB31 |
| פין 52 | PC00 — GPIO PC00 |
| פין 53 | PC01 — GPIO PC01 |
| פין 54 | PC02 — GPIO PC02 |
| פין 55 | PC03 — GPIO PC03 |
| פין 56 | VDDIO — Digital I/O supply voltage |
| פין 57 | GND — Ground |
| פין 58 | PC04 — GPIO PC04 |
| פין 59 | PC05 — GPIO PC05 |
| פין 60 | PC06 — GPIO PC06 |
| פין 61 | PC07 — GPIO PC07 |
| פין 62 | PC08 — GPIO PC08 |
| פין 63 | PC09 — GPIO PC09 |
| פין 64 | PC10 — GPIO PC10 |
| פין 65 | PC11 — GPIO PC11 |
| פין 66 | PC12 — GPIO PC12 |
| פין 67 | PC13 — GPIO PC13 |
| פין 68 | PC14 — GPIO PC14 |
| פין 69 | PC15 — GPIO PC15 |
| פין 70 | PC16 — GPIO PC16 |
| פין 71 | PC17 — GPIO PC17 |
| פין 72 | PC18 — GPIO PC18 |
| פין 73 | PC19 — GPIO PC19 |
| פין 74 | PC20 — GPIO PC20 |
| פין 75 | PC21 — GPIO PC21 |
| פין 76 | VDDIO — Digital I/O supply voltage |
| פין 77 | GND — Ground |
| פין 78 | PC22 — GPIO PC22 |
| פין 79 | PC23 — GPIO PC23 |
| פין 80 | PC24 — GPIO PC24 |
| פין 81 | PC25 — GPIO PC25 |
| פין 82 | PC26 — GPIO PC26 |
| פין 83 | PC27 — GPIO PC27 |
| פין 84 | PC28 — GPIO PC28 |
| פין 85 | PA00 — GPIO PA00 / XIN32 |
| פין 86 | PA01 — GPIO PA01 / XOUT32 |
| פין 87 | PA02 — GPIO PA02 / ADC AIN0 |
| פין 88 | PA03 — GPIO PA03 / ADC AIN1 |
| פין 89 | VDDANA — Analog supply voltage |
| פין 90 | GNDANA — Analog ground |
| פין 91 | PA04 — GPIO PA04 / ADC AIN2 / VREF |
| פין 92 | PA05 — GPIO PA05 / ADC AIN3 |
| פין 93 | PA06 — GPIO PA06 / ADC AIN4 |
| פין 94 | PA07 — GPIO PA07 / ADC AIN5 |
| פין 95 | PA08 — GPIO PA08 / ADC AIN6 |
| פין 96 | PA09 — GPIO PA09 / ADC AIN7 |
| פין 97 | VDDIO — Digital I/O supply voltage |
| פין 98 | GND — Ground |
| פין 99 | VDDCORE — Core voltage (internal LDO output) |
| פין 100 | VDDIO — Digital I/O supply voltage |
| פין 101 | PA10 — GPIO PA10 / ADC AIN8 |
| פין 102 | PA11 — GPIO PA11 / ADC AIN9 |
| פין 103 | PB00 — GPIO PB00 |
| פין 104 | PB01 — GPIO PB01 |
| פין 105 | PB02 — GPIO PB02 |
| פין 106 | PB03 — GPIO PB03 |
| פין 107 | PB04 — GPIO PB04 |
| פין 108 | PB05 — GPIO PB05 |
| פין 109 | PB06 — GPIO PB06 |
| פין 110 | PB07 — GPIO PB07 |
| פין 111 | PB08 — GPIO PB08 |
| פין 112 | RESETN — Active-low reset input |
| פין 113 | SWDIO — Serial Wire Debug I/O |
| פין 114 | SWCLK — Serial Wire Debug clock |
| פין 115 | GND — Ground |
| פין 116 | VDDIO — Digital I/O supply voltage |
| פין 117 | XIN — Crystal oscillator input |
| פין 118 | XOUT — Crystal oscillator output |
| פין 119 | GND — Ground |
| פין 120 | VDDIO — Digital I/O supply voltage |
| פין 121 | USB_DP — USB D+ pin |
| פין 122 | USB_DM — USB D- pin |
| פין 123 | VDDUSB — USB transceiver supply |
| פין 124 | GND — Ground |
| פין 125 | PA00 — GPIO PA00 / XIN32 (alt function) |
| פין 126 | PA01 — GPIO PA01 / XOUT32 (alt function) |
| פין 127 | PA02 — GPIO PA02 / DAC VOUT0 |
| פין 128 | PA03 — GPIO PA03 / DAC VOUT1 |
יישומים טיפוסיים
ATSAMD51P20A-AUT מתאים עבור 7 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ATSAMD51P20A-AUT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- AEC-Q100 qualification at Grade 2 (+85 C) (לעומתATSAMD51P20A-AU)
- Higher operating temperature range (+125 C) on the -AFT variant (לעומתATSAMD51P20A-AFT)
- Smaller Flash and SRAM versus the P20A family (לעומתATSAMD51P19A-AUT)
הערות תכנון
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.
מידע על תאימות
AEC-Q100 Grade 2 qualified per Microchip SAM D51 product page. RoHS and REACH compliant per Microchip environmental documentation.
