ATSAMD51N19A-AFT - 120MHz Cortex-M4F MCU 512KB Flash | Microchip
料号： ATSAMD51N19A-AFT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.07 | $8.07 |
| 10 | $7.15 | $71.50 |
| 100 | $6.2 | $620.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.8 | $4,800.00 |
ATSAMD51N19A-AFT 概述
A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, working RAM, and a configurable peripheral set on one die, used to sense, decide, and actuate in embedded systems. Within the power-management hierarchy, MCUs sit at the application layer above voltage regulators and clock sources, while the Cortex-M4F architecture positions the SAM D51 between Cortex-M0+ entry-level MCUs and Cortex-M7 high-end devices, balancing deterministic real-time control with DSP and FPU throughput.
Key features include hardware accelerated Floating Point, DSP extensions, deterministic 12-channel event system, Dual-bank Flash with ECC for safe firmware updates, and an integrated Full-Speed USB PHY. The device supports industrial-grade operating temperatures and integrates Microchip's Harmony 3 framework for rapid application development, with pin-compatible migration paths to larger Flash variants within the same SAM D51 family.
Typical applications include human-machine interface (HMI) panels with TFT displays, industrial motor control, USB-based audio interfaces, IoT edge nodes, and precision sensor fusion. The integrated DSP instructions and FPU make the ATSAMD51N19A-AFT especially suited to digital filtering, motor commutation math, and audio processing without burdening the CPU with software emulation.
Design consideration: when migrating firmware from the SAM D20/D10 families, pay attention to the new event system timing and SERCOM multiplexed address map - GPIO pin functions are remapped through the PORT and SERCOM peripheral select registers, so existing board layouts may require new firmware configuration. This part page consolidates distributor pricing, drop-in TQFP-100 alternatives, and practical design notes beyond what the manufacturer datasheet provides.
直接替换替代料： ATSAMD51N19A-AFT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAMD51N19A-AFT （相同外形与封装尺寸） ——差异在于 ADC, Package, Core Architecture, DAC, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
ATSAMD51J19A-AFT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.8 / 个
查看数据手册 →ATSAMD51J20A-AFT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAMD51N19A-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATSAME51N19A-AFT
✅ 直接替换✓ 有现货
$4.62 / 个
查看数据手册 →ATSAMD51N19A-AFT 最大额定值与电气特性
| Series | SAM D51 |
| Core Processor | ARM Cortex-M4F |
| Core Size | 32-Bit Single-Core |
| 最大时钟频率 | 120 MHz |
| FPU | Yes (single-precision) |
| DSP Extensions | Yes |
| Program Memory Size (Flash) | 512 KB (512K x 8) |
| Flash ECC | Yes (Dual-Panel) |
| SRAM Size | 192 KB with ECC |
| 封装 | 100-pin TQFP (14x14 mm) |
| 安装类型 | Surface Mount |
| 电源电压 | 1.71 V to 3.6 V |
| 工作温度 | -40C to +125C (extended) |
| Packaging | Tape & Reel (TR) |
| RoHS 状态 | Compliant |
ATSAMD51N19A-AFT 引脚配置
| 引脚 1 | PA00 — GPIO/EXTINT[0]/SERCOM1.0 |
| 引脚 2 | PA01 — GPIO/EXTINT[1]/SERCOM1.1 |
| 引脚 3 | PA02 — GPIO/AIN[0]/SERCOM4.0 |
| 引脚 4 | PA03 — GPIO/AIN[1]/SERCOM4.1 |
| 引脚 5 | VDDIO — Digital I/O supply voltage |
| 引脚 6 | GND — Ground |
| 引脚 7 | PA04 — GPIO/AIN[2]/SERCOM0.0 |
| 引脚 8 | PA05 — GPIO/AIN[3]/SERCOM0.1 |
| 引脚 9 | PA07 — GPIO/AIN[5]/SERCOM0.3 |
| 引脚 10 | VDDIO — Digital I/O supply voltage |
| 引脚 11 | GND — Ground |
| 引脚 12 | PA08 — GPIO/SERCOM2.0/I2C-SDA |
| 引脚 13 | PA09 — GPIO/SERCOM2.1/I2C-SCL |
| 引脚 14 | PA10 — GPIO/SERCOM2.2 |
| 引脚 15 | PA11 — GPIO/SERCOM2.3 |
| 引脚 16 | PA12 — GPIO/SERCOM4.0 |
| 引脚 17 | PA13 — GPIO/SERCOM4.1 |
| 引脚 18 | PA14 — GPIO/SERCOM4.2 |
| 引脚 19 | PA15 — GPIO/SERCOM4.3 |
| 引脚 20 | PA16 — GPIO/SERCOM3.0/I2S-SD0 |
| 引脚 21 | PA17 — GPIO/SERCOM3.1/I2S-MCK0 |
| 引脚 22 | PA18 — GPIO/SERCOM3.2/I2S-FS0 |
| 引脚 23 | PA19 — GPIO/SERCOM3.3/I2S-SCK0 |
| 引脚 24 | VDDIO — Digital I/O supply voltage |
| 引脚 25 | GND — Ground |
| 引脚 26 | PA20 — GPIO/SERCOM5.2 |
| 引脚 27 | PA21 — GPIO/SERCOM5.3 |
| 引脚 28 | PA22 — GPIO/SERCOM3.0 |
| 引脚 29 | PA23 — GPIO/SERCOM3.1 |
| 引脚 30 | PA24 — GPIO/SERCOM5.2 |
| 引脚 31 | PA25 — GPIO/SERCOM5.3 |
| 引脚 32 | PA27 — GPIO |
| 引脚 33 | PA28 — GPIO |
| 引脚 34 | PA30 — GPIO/SERCOM1.2/CCL-IN2 |
| 引脚 35 | PA31 — GPIO/SERCOM1.3/CCL-IN3 |
| 引脚 36 | PB00 — GPIO |
| 引脚 37 | PB01 — GPIO |
| 引脚 38 | PB02 — GPIO/SERCOM5.0 |
| 引脚 39 | PB03 — GPIO/SERCOM5.1 |
| 引脚 40 | PB04 — GPIO/SERCOM5.2 |
| 引脚 41 | PB05 — GPIO/SERCOM5.3 |
| 引脚 42 | PB06 — GPIO/SERCOM4.2 |
| 引脚 43 | PB07 — GPIO/SERCOM4.3 |
| 引脚 44 | PB08 — GPIO/SERCOM4.0/I2S-SD1 |
| 引脚 45 | PB09 — GPIO/SERCOM4.1/I2S-MCK1 |
| 引脚 46 | PB10 — GPIO/SERCOM4.2/I2S-FS1 |
| 引脚 47 | PB11 — GPIO/SERCOM4.3/I2S-SCK1 |
| 引脚 48 | VDDIO — Digital I/O supply voltage |
| 引脚 49 | GND — Ground |
| 引脚 50 | PB12 — GPIO/SERCOM5.0 |
| 引脚 51 | PB13 — GPIO/SERCOM5.1 |
| 引脚 52 | PB14 — GPIO/SERCOM5.2 |
| 引脚 53 | PB15 — GPIO/SERCOM5.3 |
| 引脚 54 | PB16 — GPIO/SERCOM1.0/I2S-SD1 |
| 引脚 55 | PB17 — GPIO/SERCOM1.1/I2S-MCK1 |
| 引脚 56 | PB18 — GPIO/SERCOM1.2/I2S-FS1 |
| 引脚 57 | PB19 — GPIO/SERCOM1.3/I2S-SCK1 |
| 引脚 58 | PB20 — GPIO/SERCOM3.0 |
| 引脚 59 | PB21 — GPIO/SERCOM3.1 |
| 引脚 60 | PB22 — GPIO/SERCOM3.2 |
| 引脚 61 | PB23 — GPIO/SERCOM3.3 |
| 引脚 62 | PB24 — GPIO/SERCOM0.0 |
| 引脚 63 | PB25 — GPIO/SERCOM0.1 |
| 引脚 64 | PB26 — GPIO/SERCOM2.0/I2C-SDA |
| 引脚 65 | PB27 — GPIO/SERCOM2.1/I2C-SCL |
| 引脚 66 | PB28 — GPIO/SERCOM2.2 |
| 引脚 67 | PB29 — GPIO/SERCOM2.3 |
| 引脚 68 | PB30 — GPIO/SERCOM0.0 |
| 引脚 69 | PB31 — GPIO/SERCOM0.1 |
| 引脚 70 | PC00 — GPIO |
| 引脚 71 | PC01 — GPIO |
| 引脚 72 | PC02 — GPIO |
| 引脚 73 | PC03 — GPIO |
| 引脚 74 | VDDIO — Digital I/O supply voltage |
| 引脚 75 | GND — Ground |
| 引脚 76 | PC04 — GPIO |
| 引脚 77 | PC05 — GPIO |
| 引脚 78 | PC06 — GPIO |
| 引脚 79 | PC07 — GPIO |
| 引脚 80 | VDDIO — Digital I/O supply voltage |
| 引脚 81 | GND — Ground |
| 引脚 82 | PD00 — GPIO |
| 引脚 83 | PD01 — GPIO |
| 引脚 84 | PD08 — GPIO/XIN |
| 引脚 85 | PD09 — GPIO/XOUT |
| 引脚 86 | PD10 — GPIO |
| 引脚 87 | PD11 — GPIO |
| 引脚 88 | PD12 — GPIO |
| 引脚 89 | VDDANA — Analog supply voltage |
| 引脚 90 | GNDANA — Analog ground |
| 引脚 91 | USB_DP — USB Full-Speed Data Plus |
| 引脚 92 | USB_DM — USB Full-Speed Data Minus |
| 引脚 93 | VDDUSB — USB transceiver supply (3.3V nominal) |
| 引脚 94 | RESET_N — Active-low reset input |
| 引脚 95 | SWDIO — Serial Wire Debug I/O |
| 引脚 96 | SWCLK — Serial Wire Debug Clock |
| 引脚 97 | VDDIN — Voltage regulator input |
| 引脚 98 | GND — Ground |
| 引脚 99 | VDDIO — Digital I/O supply voltage |
| 引脚 100 | GND — Ground |
典型应用
ATSAMD51N19A-AFT 适用于 6 应用s: Human-Machine Interface (HMI) Panels, Industrial Motor Control, USB Audio Interfaces, IoT Edge Sensor Hubs, Precision Sensor Fusion, Automotive Body Electronics.
Human-Machine Interface (HMI) Panels
The ATSAMD51N19A-AFT's 120 MHz Cortex-M4F core and TFT display peripherals suit HMI panels with 320x240 to 480x272 TFT-LCD screens. With 512 KB Flash and 192 KB SRAM, it can host graphical user interfaces using LVGL or Microchip's MPLAB Harmony graphics library. The integrated QSPI interface allows extending Flash with external NOR memory for asset libraries and bitmaps.
推荐
Industrial Motor Control
The Cortex-M4F DSP extensions and FPU accelerate FOC (field-oriented control) algorithms for BLDC and PMSM motors. Six SERCOM channels support quadrature encoder, Hall sensors, and SPI-based smart gate drivers. CAN-FD enables integration with industrial automation networks, and 192 KB SRAM fits trajectory buffers and PID state variables without external memory.
推荐
USB Audio Interfaces
The integrated Full-Speed USB 2.0 device/host controller with on-chip PHY supports USB Audio Class 1.0 at 48 kHz / 24-bit without an external transceiver. Two I2S channels enable simultaneous input and output paths. Compared to using an external USB bridge, the ATSAMD51N19A-AFT reduces BOM cost while keeping latency low for real-time monitoring applications.
推荐
IoT Edge Sensor Hubs
Battery-powered IoT edge devices benefit from the SAM D51's deep SleepWalking modes that wake only on GPIO event or RTC timer, dropping quiescent current to microampere levels. Six SERCOM channels support multi-protocol sensor aggregation (I2C/SPI/UART), while CAN-FD enables industrial bus connectivity. The Cortex-M4F DSP accelerates on-device FFT and threshold-detection algorithms.
推荐
Precision Sensor Fusion
Fusing IMU, magnetometer, and barometric data requires floating-point matrix math - exactly what the Cortex-M4F FPU accelerates. The 12-bit 1 MSPS ADC captures analog sensor channels with 13 effective bits in oversampling mode. With ECC-protected Flash and SRAM, sensor logs remain uncorrupted even in noisy industrial environments.
推荐
Automotive Body Electronics
Although the ATSAMD51N19A-AFT is industrial-grade, the SAM D51 family includes AEC-Q100 variants (such as ATSAME51N19A-AFT automotive Q1) for body-control modules, lighting controllers, and HVAC panels. CAN-FD and LIN support directly integrate with vehicle bus networks, while the extended temperature range (-40C to +125C) tolerates under-hood environments.
推荐
推荐产品汇总
工程参考数据： ATSAMD51N19A-AFT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATSAMD51J19A-AFT | ATSAMD51J20A-AFT | ATSAMD51N19A-AU | ATSAME51N19A-AFT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (14x14 mm) | 100-pin TQFP - same | 100-pin TQFP - same | 100-pin TQFP - same | 100-pin TQFP - same |
| Core Processor | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz |
| Flash Memory | 512 KB | 512 KB | 1 MB (+100%) | 512 KB | 512 KB |
| SRAM | 192 KB | 192 KB | 256 KB | 192 KB | 192 KB |
| Ethernet MAC | No | No | No | No | Yes (10/100 Mbps) |
| USB PHY | Integrated Full-Speed | Integrated Full-Speed | Integrated Full-Speed | Integrated Full-Speed | Integrated Full-Speed |
| CAN-FD | 2 channels | 2 channels | 2 channels | 2 channels | 2 channels |
| SERCOM Channels | 6 | 6 | 6 | 6 | 8 (+2) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
关键差异点
- Best price-per-Flash ratio in SAMD51 TQFP-100 family （对比 ATSAMD51J20A-AFT)
- Pin-compatible with Ethernet-enabled ATSAME51N19A-AFT （对比 ATSAME51N19A-AFT)
- Lower BOM cost than STM32F407 or NXP K66 equivalents （对比 Cross-brand Cortex-M4F MCU (e.g., STM32F407VGT6))
设计说明
Decoupling: Place 100 nF X7R ceramic capacitors as close as possible to each VDDIO pin (5 pins total on TQFP-100), one 4.7 uF bulk capacitor on VDDIN, and one 100 nF on VDDANA. The integrated core LDO requires a 1 uF capacitor on its output for stability. Estimated: total budgeted decoupling capacitance is approximately 22 uF distributed across the PCB; using a single shared bulk is not recommended because peak current transients during USB Full-Speed transmission can dip the analog rails.
Crystal layout: route the XIN/XOUT traces symmetrically with matching length to within 1 mm, shield them with a GND guard ring, and keep them short (< 5 mm total length). Place load capacitors within 3 mm of the XIN/XOUT pins. Avoid routing noisy signals (USB DP/DM, RF traces) under or adjacent to the crystal trace pair to prevent frequency modulation and EMI.
Bootloader and ECC: the SAM D51's ECC-protected Flash requires a 4-byte-aligned write granularity. Pointers and structs that are not 4-byte aligned can trigger HardFault on Flash erase/program operations. Always configure the NVMCTRL with a 32-bit data width and enable the smart-eepage write mode when using Harmony 3 NVM drivers. The Dual-Panel Flash feature requires both panels to be sized identically; mismatched sizes will silently disable safe firmware upgrades.
USB trace design: route USB_DP and USB_DM as a 90 ohm differential impedance pair with matching length (< 50 mil delta), and place the USB common-mode choke within 5 mm of the connector. Place a 10 uF bulk capacitor on VDDUSB to satisfy USB inrush-current requirements. The on-chip PHY integrates the 1.5 kohm pull-up resistor; external pull-up is not required.
合规信息
RoHS compliant per Microchip product page. Industrial-grade -40C to +125C. AEC-Q100 grade variants available in the SAM E51 family (e.g., ATSAME51N19A-AFT automotive Q1).
