ATSAMD51P19A-AFT - 120MHz Cortex-M4F MCU, 512KB Flash | Microchip
料号： ATSAMD51P19A-AFT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.84 | $9.84 |
| 10 | $8.95 | $89.50 |
| 100 | $7.72 | $772.00 |
| 500 | $6.83 | $3,415.00 |
| 1,000 | $6.18 | $6,180.00 |
ATSAMD51P19A-AFT 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals. The ATSAMD51P19A-AFT extends the baseline Cortex-M4 (an ARM processor with DSP extensions) by adding a single-precision floating-point unit (FPU), making it a Cortex-M4F variant. It sits within the hierarchy: Cortex-M4F -> ARM Cortex-M family -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. The Cortex-M4F core reaches 1.25 DMIPS/MHz with hardware single-precision FP, enabling efficient DSP and audio codec workloads.
Key features include 512 KB Flash with ECC (dual-panel, supporting live update), 192 KB SRAM, a 2 MB embedded SRAM (HSRAM) subsystem with 8 KB tightly-coupled memory, a 12-bit 1 MSPS ADC with up to 16 channels, dual CAN-FD controllers, USB 2.0 Full-Speed with PHY, and SERCOM peripherals configurable as UART/SPI/I2C. A 32-bit audio engine (I2S), 16-bit PWM timers, and an Event System allow deterministic low-latency IO. Cryptographic accelerators for AES, SHA-256, and True Random Number Generator (TRNG) support secure-boot implementations.
The SAM D51 architecture uses Microchip's proprietary embedded Flash technology with cache prefetch to maximize instruction throughput at 120 MHz. The peripheral DMA controller (DMAC) can move data between memory and peripherals without CPU intervention, freeing the M4F core for floating-point math-intensive tasks such as FFT/audio filtering or motor-control PID loops.
Typical applications include smart-home IoT gateways, industrial sensor aggregation nodes, USB Audio Class (UAC) sound cards, BLDC and stepper motor drives with field-oriented control (FOC), secure-connected consumer devices with OTA firmware updates, and human-machine interface (HMI) panels using TFT displays with capacitive touch via the Parallel Capture Interface (PCL). The integrated CAN-FD makes it directly applicable to automotive body and chassis networking subsets, though not AEC-Q100 qualified at the -AFT suffix (industrial -40 to +125C only).
A key design consideration: this 128 TQFP variant is footprint-compatible with the larger-density ATSAMD51P20A and the smaller ATSAMD51P19A - all share the same 14x14 mm TQFP land pattern and pinout, enabling seamless memory migration during board bring-up. Developers should plan for an external 32.768 kHz crystal for RTC accuracy if battery-backed timekeeping is required; the internal 16 MHz DFLL is accurate to about 1% across temperature, suitable for UART baud rates but not for precision RTC.
This page synthesizes distributor pricing, same-package Microchip alternates (ATSAME54P19A-AFT, ATSAME51N19A-AUT), and practical design notes for the ATSAMD51P19A-AFT - supplementing what is found in the manufacturer datasheet alone.
直接替换替代料： ATSAMD51P19A-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： ATSAMD51P19A-AFT （相同外形与封装尺寸） ——差异在于 Package, ADC, Operating Temperature, Core Architecture, MSL Level.
快速对比工具——选择替代料号进行并排对比：
ATSAME54P19A-AFT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAMD51P20A-AFT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAMD51P19A-AUT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAMD51P19A-AF
✅ 直接替换📋 参考替代料（不在目录中）
ATSAMD51P19A-CFT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAMD51P19A-AFT 最大额定值与电气特性
| Core Architecture | ARM Cortex-M4F (with FPU) |
| Maximum Clock Speed | 120 MHz |
| Program Memory (Flash) | 512 KB (dual-panel with ECC) |
| SRAM | 192 KB (with 8 KB TCM) |
| Supply Voltage (VDD) | 1.71 V to 3.63 V |
| 工作温度 | -40C to +125C (industrial) |
| 封装 | 128-TQFP (14x14 mm) |
| ADC | 12-bit, 1 MSPS, up to 16 channels |
| DAC | 12-bit, 2 channels |
| USB | USB 2.0 Full-Speed with integrated PHY |
| CAN | 2x CAN-FD controllers |
| SERCOM | Up to 8 SERCOM (UART/SPI/I2C-configurable) |
| Crypto Accelerator | AES, SHA-256, TRNG |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 (168 hours) |
| RoHS 状态 | Compliant |
ATSAMD51P19A-AFT 引脚配置
| 引脚 1 | VDDIO — IO voltage supply |
| 引脚 2 | PA00 — GPIO / SERCOM1.0 / I2S FS0 |
| 引脚 3 | PA01 — GPIO / SERCOM1.1 / I2S SCK0 |
| 引脚 4 | PA02 — GPIO / SERCOM1.2 / ADC AIN0 |
| 引脚 5 | PA03 — GPIO / SERCOM1.3 / ADC AIN1 |
| 引脚 6 | PA04 — GPIO / SERCOM0.0 / ADC AIN2 |
| 引脚 7 | PA05 — GPIO / SERCOM0.1 / ADC AIN3 |
| 引脚 8 | PA06 — GPIO / SERCOM0.2 / ADC AIN4 |
| 引脚 9 | PA07 — GPIO / SERCOM0.3 / ADC AIN5 |
| 引脚 10 | VDDIO — IO voltage supply |
| 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 / CAN0 TX |
| 引脚 17 | PA13 — GPIO / SERCOM4.1 / CAN0 RX |
| 引脚 18 | PA14 — GPIO / SERCOM4.2 |
| 引脚 19 | PA15 — GPIO / SERCOM4.3 |
| 引脚 20 | GND — Ground |
| 引脚 21 | PA16 — GPIO / SERCOM3.0 / I2S FS1 |
| 引脚 22 | PA17 — GPIO / SERCOM3.1 / I2S SCK1 |
| 引脚 23 | PA18 — GPIO / SERCOM3.2 / I2S SD0 |
| 引脚 24 | PA19 — GPIO / SERCOM3.3 / I2S MCK0 |
| 引脚 25 | PA20 — GPIO / SERCOM5.2 |
| 引脚 26 | PA21 — GPIO / SERCOM5.3 |
| 引脚 27 | PA22 — GPIO / SERCOM3.0 |
| 引脚 28 | PA23 — GPIO / SERCOM3.1 |
| 引脚 29 | PA24 — GPIO / SERCOM3.2 / USB_DM |
| 引脚 30 | PA25 — GPIO / SERCOM3.3 / USB_DP |
| 引脚 31 | GND — Ground |
| 引脚 32 | PB00 — GPIO / SERCOM5.0 / ADC AIN8 |
| 引脚 33 | PB01 — GPIO / SERCOM5.1 / ADC AIN9 |
| 引脚 34 | PB02 — GPIO / SERCOM5.2 / ADC AIN10 |
| 引脚 35 | PB03 — GPIO / SERCOM5.3 / ADC AIN11 |
| 引脚 36 | PB04 — GPIO / ADC AIN12 |
| 引脚 37 | PB05 — GPIO / ADC AIN13 |
| 引脚 38 | PB06 — GPIO / ADC AIN14 |
| 引脚 39 | PB07 — GPIO / ADC AIN15 |
| 引脚 40 | PB08 — GPIO / SERCOM4.0 / I2C SDA |
| 引脚 41 | PB09 — GPIO / SERCOM4.1 / I2C SCL |
| 引脚 42 | PB10 — GPIO / SERCOM4.2 |
| 引脚 43 | PB11 — GPIO / SERCOM4.3 |
| 引脚 44 | PB12 — GPIO / SERCOM6.0 |
| 引脚 45 | PB13 — GPIO / SERCOM6.1 |
| 引脚 46 | PB14 — GPIO / SERCOM6.2 |
| 引脚 47 | PB15 — GPIO / SERCOM6.3 |
| 引脚 48 | GND — Ground |
| 引脚 49 | PB16 — GPIO / SERCOM7.0 / TC4 WO0 |
| 引脚 50 | PB17 — GPIO / SERCOM7.1 / TC4 WO1 |
| 引脚 51 | PB18 — GPIO / SERCOM7.2 |
| 引脚 52 | PB19 — GPIO / SERCOM7.3 |
| 引脚 53 | PB20 — GPIO / SERCOM3.0 |
| 引脚 54 | PB21 — GPIO / SERCOM3.1 |
| 引脚 55 | PB22 — GPIO / SERCOM3.2 |
| 引脚 56 | PB23 — GPIO / SERCOM3.3 |
| 引脚 57 | PC00 — GPIO / SERCOM6.0 |
| 引脚 58 | PC01 — GPIO / SERCOM6.1 |
| 引脚 59 | PC02 — GPIO / SERCOM6.2 |
| 引脚 60 | PC03 — GPIO / SERCOM6.3 |
| 引脚 61 | PC04 — GPIO / SERCOM7.0 |
| 引脚 62 | PC05 — GPIO / SERCOM7.1 |
| 引脚 63 | PC06 — GPIO / SERCOM7.2 |
| 引脚 64 | PC07 — GPIO / SERCOM7.3 |
| 引脚 65 | VDDIO — IO voltage supply |
| 引脚 66 | PC08 — GPIO |
| 引脚 67 | PC09 — GPIO |
| 引脚 68 | PC10 — GPIO |
| 引脚 69 | PC11 — GPIO |
| 引脚 70 | PC12 — GPIO |
| 引脚 71 | PC13 — GPIO |
| 引脚 72 | PC14 — GPIO |
| 引脚 73 | PC15 — GPIO |
| 引脚 74 | PC16 — GPIO |
| 引脚 75 | PC17 — GPIO |
| 引脚 76 | PC18 — GPIO |
| 引脚 77 | PC19 — GPIO |
| 引脚 78 | PC20 — GPIO |
| 引脚 79 | PC21 — GPIO |
| 引脚 80 | GND — Ground |
| 引脚 81 | PD00 — GPIO |
| 引脚 82 | PD01 — GPIO |
| 引脚 83 | PD02 — GPIO |
| 引脚 84 | PD03 — GPIO |
| 引脚 85 | PD04 — GPIO |
| 引脚 86 | PD05 — GPIO |
| 引脚 87 | PD06 — GPIO |
| 引脚 88 | PD07 — GPIO |
| 引脚 89 | PD08 — GPIO |
| 引脚 90 | PD09 — GPIO |
| 引脚 91 | PD10 — GPIO |
| 引脚 92 | PD11 — GPIO |
| 引脚 93 | PD12 — GPIO |
| 引脚 94 | PD13 — GPIO |
| 引脚 95 | PD14 — GPIO |
| 引脚 96 | PD15 — GPIO |
| 引脚 97 | PD16 — GPIO |
| 引脚 98 | PD17 — GPIO |
| 引脚 99 | PD18 — GPIO |
| 引脚 100 | PD19 — GPIO |
| 引脚 101 | VDDCORE — Core voltage supply (1.2V) |
| 引脚 102 | VDDIO — IO voltage supply |
| 引脚 103 | RESETn — Reset input, active low |
| 引脚 104 | SWDIO — SWD data (debug) |
| 引脚 105 | SWCLK — SWD clock (debug) |
| 引脚 106 | XTAL32K_IN — 32.768 kHz crystal input |
| 引脚 107 | XTAL32K_OUT — 32.768 kHz crystal output |
| 引脚 108 | XTAL_IN — Main crystal input |
| 引脚 109 | XTAL_OUT — Main crystal output |
| 引脚 110 | VSW — Internal DCDC switching node |
| 引脚 111 | VDDIO — IO voltage supply |
| 引脚 112 | AUX — AUX power pin |
| 引脚 113 | PD20 — GPIO |
| 引脚 114 | PD21 — GPIO |
| 引脚 115 | GND — Ground |
| 引脚 116 | PA27 — GPIO / SERCOM0.3 |
| 引脚 117 | PA28 — GPIO / SERCOM0.0 |
| 引脚 118 | PA29 — GPIO / SERCOM0.1 |
| 引脚 119 | PA30 — GPIO / SERCOM0.2 |
| 引脚 120 | PA31 — GPIO / SERCOM0.3 |
| 引脚 121 | PB24 — GPIO / SERCOM0.0 |
| 引脚 122 | PB25 — GPIO / SERCOM0.1 |
| 引脚 123 | PB26 — GPIO / SERCOM0.2 |
| 引脚 124 | PB27 — GPIO / SERCOM0.3 |
| 引脚 125 | PC22 — GPIO |
| 引脚 126 | PC23 — GPIO |
| 引脚 127 | GND — Ground |
| 引脚 128 | VDDPLL — PLL analog supply |
典型应用
ATSAMD51P19A-AFT 适用于 6 应用s: USB Audio Class (UAC) Sound Card, Industrial Sensor Aggregation / IoT Gateway, BLDC Motor Field-Oriented Control (FOC), HMI Panel with TFT Touch Display, Secure-Connected Consumer Device with OTA, Portable Data Acquisition / Test Instrument.
USB Audio Class (UAC) Sound Card
The ATSAMD51P19A-AFT is a strong fit for USB Audio Class (UAC) sound cards because its 120 MHz Cortex-M4F core sustains 48 kHz / 24-bit stereo processing with margin for FX. The integrated USB 2.0 Full-Speed controller with on-chip PHY eliminates the need for an external transceiver, while the I2S peripheral streams audio to an external DAC such as the S/PDIF output stage. The 192 KB SRAM (plus 8 KB TCM) provides comfortable buffering for double-buffered audio frames, and the DMA controller offloads USB-to-I2S transfers, freeing the M4F core for DSP filtering and volume control.
推荐
Industrial Sensor Aggregation / IoT Gateway
For industrial sensor aggregation, the ATSAMD51P19A-AFT integrates dual CAN-FD controllers for chassis-level networking, 12-bit 1 MSPS ADC channels for analog sensor sampling, and up to eight SERCOM peripherals configurable as UART, SPI, or I2C for digital sensor interfacing. The 120 MHz M4F allows aggregation of multiple sensor streams with on-the-fly FFT or moving-average filtering before forwarding through CAN or USB. Hardware AES/SHA/TRNG supports OTA firmware integrity verification at the edge. The 128-TQFP exposes ample GPIO for parallel display or keypad IO on industrial HMI panels.
推荐
BLDC Motor Field-Oriented Control (FOC)
The ATSAMD51P19A-AFT fits BLDC motor FOC drives because the Cortex-M4F single-precision FPU executes the Park/Clarke transforms and PID loops at 120 MHz with deterministic cycle time, supported by 16-bit PWM timers with complementary outputs and dead-time insertion. The 12-bit 1 MSPS ADC synchronizes with PWM for back-EMF and phase-current sensing, while the Event System routes fault signals with deterministic sub-microsecond latency. Dual CAN-FD serves industrial drive buses like CANopen. The 192 KB SRAM holds observed current/voltage tables for diagnostics, and the AES engine secures motor parameter write access.
推荐
HMI Panel with TFT Touch Display
The ATSAMD51P19A-AFT drives TFT LCDs with capacitive touch via the Parallel Capture Interface (PCL) and SMC, while the Cortex-M4F core runs LVGL/Embedded Wizard graphics libraries at 120 MHz for responsive UI rendering. The integrated 2 MB HSRAM subsystem (selectable 384 KB) supplies enough framebuffer memory for 480x272 RGB565 frames without external SRAM. USB Full-Speed enables HID touch-class HID interfacing and firmware DFU updates. Hardware SHA-256 verifies signed GUI assets at boot, supporting tamper-resistant HMI deployments in industrial controllers and medical instrument panels.
推荐
Secure-Connected Consumer Device with OTA
The ATSAMD51P19A-AFT supports secure consumer products with over-the-air (OTA) firmware updates through its hardware AES-256, SHA-256, and True Random Number Generator. The 512 KB dual-panel Flash allows live firmware swap without external EEPROM emulation: one panel executes while the other downloads and verifies a new image. Wi-Fi companion modules (e.g., ATWINC3400) interface via SPI to one of the SERCOM peripherals. The Cortex-M4F core handles TLS handshake acceleration and application logic. The 128 TQFP keeps the design single-sided, suitable for wearable enclosures.
推荐
Portable Data Acquisition / Test Instrument
In portable data acquisition and bench instruments, the ATSAMD51P19A-AFT combines a 120 MHz Cortex-M4F core (with FPU for FIR/IIR filtering), 12-bit 1 MSPS ADC with up to 16 channels, and a high-speed USB 2.0 Full-Speed device interface for streaming captures to a host PC. The 192 KB SRAM and SERCOM peripherals allow simultaneous analog sampling, GPS time-tagging, and SD-card storage of acquisition runs. Hardware AES can encrypt sensitive captured data at rest. The industrial -40C to +125C temperature range and 128-TQFP footprint suit handheld bench instruments fielded in lab or production environments.
推荐
推荐产品汇总
工程参考数据： ATSAMD51P19A-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 | ATSAME54P19A-AFT | ATSAMD51P20A-AFT | ATSAMD51P19A-AUT | ATSAMD51P19A-AF | ATSAMD51P19A-CFT |
|---|---|---|---|---|---|---|
| Package | 128-TQFP (14x14) | 128-TQFP (14x14) - same | 128-TQFP (14x14) - same | 128-TQFP (14x14) - same | 128-TQFP (14x14) - same | 128-TQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 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) | ARM Cortex-M4F (120 MHz) |
| Flash | 512 KB | 512 KB (1 MB family option) | 1 MB | 512 KB | 512 KB | 512 KB |
| SRAM | 192 KB | 256 KB | 192 KB | 192 KB | 192 KB | 192 KB |
| Operating Temperature | -40C to +125C (industrial) | -40C to +125C | -40C to +125C | -40C to +85C (commercial) | -40C to +125C | -40C to +125C |
| CAN-FD | 2 controllers | 1 controller | 2 controllers | 2 controllers | 2 controllers | 2 controllers |
| USB FS | Yes (integrated PHY) | Yes (integrated PHY) | Yes (integrated PHY) | Yes (integrated PHY) | Yes (integrated PHY) | Yes (integrated PHY) |
| Ethernet MAC | No | Yes (10/100) | No | No | No | No |
| 1-Piece Price (USD, as of 2026-09-21) | 9.84 | 10.20 (approx) | 10.85 (approx) | 9.84 (same die, reel) | 9.95 (tray variant) | 10.10 (approx) |
关键差异点
- Native dual CAN-FD + USB Audio + Ethernet-class peripheral set （对比 ATSAME54P19A-AFT)
- 512 KB Flash single-panel density sweet spot （对比 ATSAMD51P20A-AFT)
- Industrial -40C to +125C temperature grade with T&R option （对比 ATSAMD51P19A-AUT)
设计说明
The ATSAMD51P19A-AFT integrates a 1.2V internal DCDC regulator (VSW pin 110) that converts VDDIO 3.3V to VDDCORE. Place a 4.7uF ceramic capacitor as close as possible to VSW and a 1uF ceramic on VDDCORE (pin 101) to comply with the regulator stability requirements. For noise-sensitive analog workloads (e.g., driving the 12-bit ADC), enable the internal DFLL bypass or feed the ADC with a dedicated low-noise LDO such as the MCP1711 to reach datasheet SNR figures.
Route the USB_DP (PA25) and USB_DM (PA24) lines as a 90-ohm differential pair on the top layer, with the pair length matched within 150 mil. Place the ESD protection diode (e.g., PRTR5V0U2X) within 5 mm of the USB connector. Keep the 32.768 kHz crystal traces short and symmetric, surrounded by a ground pour to minimize load capacitance drift that affects RTC accuracy. Avoid routing high-current switching traces under the crystal.
Estimated: at 120 MHz with active M4F core, all peripherals enabled, and CAN-FD transceivers driven at 5 Mbps, the VDDCORE current peaks near 80 mA. With only the onboard DCDC supplying 1.2V from 3.3V, the input-side current peaks near 30 mA (efficiency ~85%) - the 4.7uF ceramic at VSW must handle this ripple without significant voltage droop. Also note: the NMI pin is multiplexed and must not be left floating at boot or the bootloader may mis-behave; tie NMI to VDDIO through a 100k pull-up if unused.
At 120 MHz continuous operation with all peripherals active, junction-to-ambient thermal resistance (theta_JA) for the 128-TQFP is approximately 32 C/W on a 4-layer JEDEC PCB. At 25C ambient, junction temperature rises by an estimated 0.75 C per mW above ambient - within the industrial -40 to +125C spec for typical workloads. For high-utilization use, ensure at least 1 square inch of unbroken ground copper beneath the TQFP thermal pad region to keep junction rise below 30C.
合规信息
AEC-Q100 not qualified - the standard -AFT suffix is industrial temperature, not automotive. For body/chassis CAN-FD applications, verify AEC-Q100 qualification with the specific ordering code (no -Q1 suffix on this MPN).