ATSAMD51P19A-AU-EFP - 120MHz Cortex-M4F MCU 512KB Flash TQFP-128
MPN： ATSAMD51P19A-AU-EFP ✓ 啟用中ATSAMD51P19A-AU-EFP 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash and SRAM), and a mix of peripherals such as timers, ADC/DAC, communication interfaces (UART, SPI, I2C, USB, CAN, Ethernet), and GPIO into one package. MCUs are the lowest tier of the embedded processor hierarchy (MCU -> microprocessor -> SoC), and the Cortex-M4F class specifically targets deterministic real-time control with hardware floating-point and DSP extensions. The SAM D51 family sits at the high end of Microchip's Cortex-M4F portfolio, above the SAM D21 and SAM D11 families, and offers substantially more memory, peripherals, and connectivity than lower-tier parts.
Key features of the ATSAMD51P19A-AU-EFP include: ARM Cortex-M4F core with single-precision FPU and DSP extensions, 120 MHz max CPU clock, 512 KB Flash with ECC (Extended Flash Performance variant), 192 KB SRAM, full-speed USB 2.0 with integrated PHY, up to 6 SERCOM serial communication interfaces, 12-bit ADC and DAC, and a 128-pin TQFP footprint. The EFP suffix indicates the Extended Flash Performance temperature/operating profile.
Technically, the SAM D51 architecture uses a 4-layer AHB bus matrix for parallel peripheral DMA, a low-power sleepwalking peripheral event system, and an Event System for inter-peripheral signaling without CPU intervention. The integrated USB 2.0 Full-Speed PHY eliminates external components for USB-device applications, while the 12-bit 1 MSPS ADC enables precision mixed-signal sensing.
Typical applications include industrial IoT edge nodes, USB human-interface devices (HID), motor control (BLDC and FOC), graphical HMI with TFT displays, audio processing with USB streaming, smart energy metering, and wearable medical/fitness devices. The wide peripheral set also suits home automation gateways and connected sensor hubs.
Designers should ensure the PCB provides adequate 3.3V decoupling (100 nF + bulk) near each power pin, route the USB DP/DM pair as a 90-ohm differential, and respect the 128-pin TQFP land pattern. Programming is supported through Microchip's MPLAB X IDE and Atmel Studio, with debug via SWD or JTAG.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the ATSAMD51P19A-AU-EFP for new designs and replacements.
直接替換替代品，適用於 ATSAMD51P19A-AU-EFP — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAMD51P19A-AU-EFP （相同外形與佔位） — 差異在於 Operating Temperature, ADC, SRAM, Package, USB.
ATSAMD51P19A-AUT-EFP
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAMD51P19A-AU
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ATSAMD51P19A-AUT
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ATSAMD51P19A-AFT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD51N20A-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD51N19A-AUT-EFP
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD51P19A-AU-EFP 最大額定值與電氣特性
| Core Processor | ARM Cortex-M4F |
| Core Size | 32-bit |
| Maximum CPU Clock | 120 MHz |
| FPU | Yes (single-precision) |
| DSP Extensions | Yes |
| Program Memory (Flash) | 512 KB (512K x 8) with ECC |
| RAM Size | 192 KB |
| 工作溫度 | -40C to +85C |
| 封裝 | 128-TQFP (14x14 mm) |
| 安裝類型 | Surface Mount |
| USB | USB 2.0 Full-Speed with integrated PHY |
| RoHS 狀態 | Compliant |
| Programming/Debug | SWD, JTAG |
| Lead-Free | Yes |
ATSAMD51P19A-AU-EFP 128-tqfp (14x14 mm) 腳位配置指南
ATSAMD51P19A-AU-EFP（128-tqfp (14x14 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATSAMD51P19A-AU-EFP.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAMD51P19A-AU-EFP 適用於 7 應用s: Industrial IoT Edge Node, USB Human Interface Device (HID), Motor Control (BLDC / FOC), Graphical HMI with TFT Display, Audio Processing with USB Streaming, Smart Energy Metering, Wearable Medical / Fitness Device.
Industrial IoT Edge Node
The ATSAMD51P19A-AU-EFP's 120 MHz Cortex-M4F core, 192 KB SRAM, and ECC-protected 512 KB Flash make it a strong fit for industrial IoT edge nodes aggregating sensor data. Its hardware FPU accelerates edge analytics such as FFT-based vibration analysis and threshold detection, while the -40C to +85C industrial temperature range supports factory-floor deployment. The integrated USB 2.0 Full-Speed PHY enables direct connection to industrial gateways without external components. Place the MCU between the sensor I/O chain and the upstream network processor; decoupling requires 100 nF X7R near each VDD pin plus 10 uF bulk, and the SERCOM interfaces can be software-configured as I2C for sensor hubs or SPI for high-speed ADCs.
推薦
USB Human Interface Device (HID)
With its integrated USB 2.0 Full-Speed PHY and 120 MHz Cortex-M4F core, the ATSAMD51P19A-AU-EFP is well-suited for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices. The 192 KB SRAM comfortably accommodates USB descriptor stacks plus HID report buffers. The integrated PHY eliminates external USB transceivers, reducing BOM cost by $0.30-0.50 compared to MCUs requiring external USB. Route the DP/DM pair as a 90-ohm differential with controlled impedance, and use the SERCOM interfaces for button matrices or capacitive touch scanning upstream of the HID reports.
推薦
Motor Control (BLDC / FOC)
The ATSAMD51P19A-AU-EFP's hardware FPU, 120 MHz clock, and rich timer/PWM peripheral set make it suitable for sensorless BLDC and field-oriented control (FOC) of small to mid-size motors. The Cortex-M4F executes FOC loops within microseconds, while the integrated 12-bit ADC enables back-EMF sensing and current measurement. The 512 KB Flash accommodates full motor-control firmware including state machines, ramp tables, and protection logic. Place shunt resistors on the low-side of each phase leg and connect ADC channels accordingly; the SERCOM interfaces handle encoder feedback or UART-to-host diagnostics, reducing external component count.
推薦
Graphical HMI with TFT Display
Driving small TFT displays for HMI requires an MCU with sufficient RAM for framebuffers and a fast core for graphics rendering; the ATSAMD51P19A-AU-EFP delivers both. Its 192 KB SRAM holds partial framebuffers for 320x240 RGB565 displays, and the 120 MHz Cortex-M4F handles redraws and widget rendering. The integrated USB Full-Speed supports touch-panel data and host commands, while SERCOM interfaces connect to SPI flash for asset images. Use the EBI interface (where available in this family) to offload TFT data lines; configure DMA channels to reduce CPU load during screen updates.
推薦
Audio Processing with USB Streaming
The ATSAMD51P19A-AU-EFP's Cortex-M4F DSP extensions and 192 KB SRAM make it suitable for USB audio streaming applications such as USB headphones, microphones, and audio interfaces at 48 kHz/24-bit. The integrated USB Full-Speed PHY supports USB Audio Class 1.0 without external components. Hardware DSP enables on-the-fly filtering, mixing, and dynamic-range control with negligible CPU overhead. Allocate ~64 KB of SRAM for double-buffered audio I/O; route I2S to external codec via SERCOM in I2S mode, and use the 12-bit DAC for direct headphone amplification in cost-sensitive designs.
推薦
Smart Energy Metering
For smart electricity, gas, or water metering, the ATSAMD51P19A-AU-EFP's Cortex-M4F core enables accurate energy calculation algorithms while its ECC-protected Flash supports secure firmware updates. The 12-bit ADC samples current/voltage with sufficient resolution for class-1 metering accuracy, and the integrated USB PHY supports local configuration interfaces. The wide operating temperature and industrial-grade qualification suit outdoor meter enclosures. Use DMA-driven ADC sampling to offload computation, and route calibration data to the 512 KB Flash's EEPROM emulation region; the SERCOM interfaces handle Modbus, M-Bus, or wireless module connectivity.
推薦
Wearable Medical / Fitness Device
The ATSAMD51P19A-AU-EFP's low-power sleep modes and hardware FOC support biometric signal processing in wearable medical and fitness devices. The integrated USB Full-Speed PHY enables charging-crate data sync without external components, and the 192 KB SRAM accommodates biosignal buffers for ECG, PPG, or motion data. The Cortex-M4F DSP extensions accelerate FFT-based heart-rate variability analysis. Configure the Event System to wake the CPU from sleep on sensor interrupts, minimizing average power consumption; route analog sensor outputs to the 12-bit ADC for direct digitization, and use SERCOM interfaces for BLE module connectivity.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAMD51P19A-AU-EFP — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAMD51P19A-AUT-EFP | ATSAMD51P19A-AU | ATSAMD51N20A-AU | ATSAMD51N19A-AUT-EFP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| 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 |
| Flash Memory | 512 KB with ECC | 512 KB with ECC | 512 KB with ECC | 1 MB with ECC | 1 MB with ECC |
| SRAM Size | 192 KB | 192 KB | 192 KB | 256 KB | 256 KB |
| Core / Clock | Cortex-M4F / 120 MHz | Cortex-M4F / 120 MHz | Cortex-M4F / 120 MHz | Cortex-M4F / 120 MHz | Cortex-M4F / 120 MHz |
| EFP Suffix | Yes (Extended Flash Performance) | Yes | No | No | Yes |
| Packaging Format | Tray (AU) | Tape & Reel (AUT) | Tray (AU) | Tray (AU) | Tape & Reel (AUT) |
| Pin Count | 128 | 128 | 128 | 128 | 128 |
| USB PHY | Integrated Full-Speed | Integrated Full-Speed | Integrated Full-Speed | Integrated Full-Speed + HS | Integrated Full-Speed + HS |
主要差異化特點
- Extended Flash Performance (EFP) variant (對比ATSAMD51P19A-AU (non-EFP))
- Drop-in scalability to 1 MB Flash / 256 KB SRAM (對比ATSAMD51P19A-AU (same Flash density))
- Integrated USB 2.0 Full-Speed PHY (對比Other Cortex-M4F MCUs requiring external USB PHY)
設計說明
Decouple each VDD pin with a 100 nF X7R ceramic placed within 3 mm of the pin, and add a single 10 uF bulk capacitor on each power rail (VDD, VDDIO, VDDCORE). According to the SAM D51 datasheet, VDDCORE requires an additional 1 uF decoupling capacitor. Bulk capacitors should be low-ESR ceramic types; tantalum is generally avoided for VDDCORE due to high transient currents.
The 128-TQFP package has 0.4 mm pitch and 14x14 mm body. Follow Microchip's recommended land pattern with solder mask-defined (SMD) pads to reduce solder bridging. Route the USB DP/DM pair as a 90-ohm differential with matched length to within 150 mils; place the common-mode choke and ESD protection array within 10 mm of the connector. If the device has an exposed thermal pad, solder it to a continuous ground pour for thermal dissipation.
Three common pitfalls: (1) Forgetting to configure the NVMCTRL peripheral for ECC before writing to Flash can lead to silent corruption; (2) USB VBUS sense must be enabled in the SYSCTRL to detect attach/detach reliably; (3) The GCLK generators must be configured before SERCOM peripherals to avoid peripheral startup failures. Always use Microchip's MPLAB Harmony configurator to set clock and peripheral trees to avoid these traps.
合規資訊
RoHS compliant per Microchip product page; lead-free TQFP package. AEC-Q100 not qualified - for automotive applications consider SAM RH71 or SAM V71 families. Halogen-free status not explicitly stated in provided data.