ATSAMD51J19A-AUT - 120MHz Cortex-M4F MCU, 512KB Flash | Microchip
料号： ATSAMD51J19A-AUT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.72 | $6.72 |
| 10 | $6.05 | $60.50 |
| 100 | $5.42 | $542.00 |
| 500 | $4.85 | $2,425.00 |
| 1,000 | $4.32 | $4,320.00 |
ATSAMD51J19A-AUT 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and a wide range of peripherals onto one die. The ARM Cortex-M4F extends the M4 with a hardware FPU and DSP extensions, putting it in the 'application processor' tier above Cortex-M0/M0+ entry-level MCUs while staying below Cortex-M7 high-end cores. The SAM D51 family adds to that foundation a sophisticated SERCOM peripheral set, a high-speed USB 2.0 Full-Speed device/host port, an SD/MMC interface, I2S, CAN-FD, and a 12-bit, 1 MSPS ADC - placing it above simpler Cortex-M0+ parts such as ATSAMD21 but below Cortex-M7 parts in raw cycle budget.
Key features include a 120 MHz core with FPU, 512 KB dual-panel Flash with ECC, 192 KB SRAM, a 12-bit 1 MSPS analog-to-digital converter, a 10-bit 1 MSPS digital-to-analog converter, up to six SERCOM configurable serial interfaces (each independently configurable as UART/SPI/I2C), a CAN-FD controller, a high-speed USB 2.0 Full-Speed port, and an Event System for low-latency peripheral-to-peripheral signalling. Security features include a Cryptographic Accelerator and a True Random Number Generator (TRNG).
Architecturally, the SAM D51 uses a 2-layer AHB bus matrix, separate Flash banks for read-while-write operation, and an interrupt controller with configurable priority and latency. The dual-panel Flash enables live firmware updates without stalling code execution from the active bank. Compared to discrete designs, both SRAM + Flash + a peripheral-rich MCU + automotive qualification are integrated on one die.
Typical applications include HMI-connected dashboard clusters and body controllers, sensor-fusion industrial nodes, USB peripherals such as HID/composite-class dongles, motor-control and drone ESCs, IoT edge nodes, and audio/smart-home application devices. The wide 3.0-V (vs 3.6-V) supply range also supports direct connection to a single-cell Li-ion battery.
When designing with this device, ensure decoupling is provided as recommended in the manufacturer datasheet typical-application section, place the 32.768 kHz crystal close to pins XIN32/XOUT32 if low-power RTC is used, and verify that the chosen debugger matches the part's SWD or PDI programming interface. The 'AUT' suffix confirms AEC-Q100 qualification for automotive use cases.
This page synthesizes distributor pricing, AEC-Q100-qualified drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： ATSAMD51J19A-AUT ——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： ATSAMD51J19A-AUT （相同外形与封装尺寸） ——差异在于 ADC, DAC, Core Architecture, SRAM, USB.
快速对比工具——选择替代料号进行并排对比：
ATSAMD51J19A-AU
✅ 直接替换✓ 有现货
$4.56 / 个
查看数据手册 →ATSAMD51J20A-AUT
✅ 直接替换✓ 有现货
$3.32 / 个
查看数据手册 →ATSAMD51J18A-AUT
✅ 直接替换✓ 有现货
$4.78 / 个
查看数据手册 →ATSAME51J19A-AU
✅ 直接替换✓ 有现货
$3.42 / 个
查看数据手册 →ATSAME51J20A-AU
✅ 直接替换✓ 有现货
$6.45 / 个
查看数据手册 →ATSAMD51J19B-AUT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAMD51J19A-AUT 最大额定值与电气特性
| Core Architecture | ARM Cortex-M4F with FPU |
| 最大时钟频率 | 120 MHz |
| Program Memory Size | 512KB (512K x 8) Flash with ECC |
| SRAM Size | 192 KB |
| 封装 | 64-TQFP (10x10 mm) |
| 工作温度 | -40C to +85C |
| 电源电压 | 1.71V to 3.6V |
| ADC | 12-bit, up to 1 MSPS |
| DAC | 10-bit, up to 1 MSPS |
| SERCOM Interfaces | 6 (configurable as UART/SPI/I2C) |
| USB | USB 2.0 Full-Speed Device/Host |
| CAN | CAN-FD controller |
| Crypto Accelerator | Yes (AES, SHA, TRNG) |
| Qualification | AEC-Q100 automotive grade |
| RoHS 状态 | Compliant |
ATSAMD51J19A-AUT 引脚配置
| 引脚 1 | PA00 — GPIO / SERCOM1 PAD0 |
| 引脚 2 | PA01 — GPIO / SERCOM1 PAD1 |
| 引脚 3 | PA02 — GPIO / SERCOM2 PAD0 |
| 引脚 4 | PA03 — GPIO / SERCOM2 PAD1 |
| 引脚 5 | PA04 — GPIO / SERCOM0 PAD0 / ADC AIN4 |
| 引脚 6 | PA05 — GPIO / SERCOM0 PAD1 / ADC AIN5 |
| 引脚 7 | PA06 — GPIO / SERCOM0 PAD2 / ADC AIN6 |
| 引脚 8 | PA07 — GPIO / SERCOM0 PAD3 / ADC AIN7 |
| 引脚 9 | VDD — Digital supply voltage |
| 引脚 10 | GND — Ground |
| 引脚 11 | PA08 — GPIO / SERCOM2 PAD0 / ADC AIN8 |
| 引脚 12 | PA09 — GPIO / SERCOM2 PAD1 / ADC AIN9 |
| 引脚 13 | PA10 — GPIO / SERCOM2 PAD2 / ADC AIN10 |
| 引脚 14 | PA11 — GPIO / SERCOM2 PAD3 / ADC AIN11 |
| 引脚 15 | PA12 — GPIO / SERCOM4 PAD0 |
| 引脚 16 | PA13 — GPIO / SERCOM4 PAD1 |
| 引脚 17 | PA14 — GPIO / SERCOM4 PAD2 |
| 引脚 18 | PA15 — GPIO / SERCOM4 PAD3 |
| 引脚 19 | PA16 — GPIO / SERCOM3 PAD0 / I2S FS0 |
| 引脚 20 | PA17 — GPIO / SERCOM3 PAD1 / I2S SCK0 |
| 引脚 21 | PA18 — GPIO / SERCOM3 PAD2 / I2S SDO |
| 引脚 22 | PA19 — GPIO / SERCOM3 PAD3 / I2S SDI |
| 引脚 23 | PA20 — GPIO / SERCOM5 PAD2 |
| 引脚 24 | PA21 — GPIO / SERCOM5 PAD3 |
| 引脚 25 | PA22 — GPIO / SERCOM3 PAD0 / USB D- |
| 引脚 26 | PA23 — GPIO / SERCOM3 PAD1 / USB D+ |
| 引脚 27 | PA24 — GPIO / SERCOM5 PAD2 |
| 引脚 28 | PA25 — GPIO / SERCOM5 PAD3 |
| 引脚 29 | PB00 — GPIO / SERCOM5 PAD0 |
| 引脚 30 | PB01 — GPIO / SERCOM5 PAD1 |
| 引脚 31 | PB02 — GPIO / SERCOM5 PAD2 / ADC AIN14 |
| 引脚 32 | PB03 — GPIO / SERCOM5 PAD3 / ADC AIN15 |
| 引脚 33 | PB04 — GPIO / SERCOM3 PAD0 |
| 引脚 34 | PB05 — GPIO / SERCOM3 PAD1 |
| 引脚 35 | PB06 — GPIO / SERCOM3 PAD2 |
| 引脚 36 | PB07 — GPIO / SERCOM3 PAD3 |
| 引脚 37 | PB08 — GPIO / SERCOM4 PAD0 |
| 引脚 38 | PB09 — GPIO / SERCOM4 PAD1 |
| 引脚 39 | PB10 — GPIO / SERCOM4 PAD2 |
| 引脚 40 | PB11 — GPIO / SERCOM4 PAD3 |
| 引脚 41 | PB12 — GPIO / SERCOM4 PAD0 / CAN0 RX |
| 引脚 42 | PB13 — GPIO / SERCOM4 PAD1 / CAN0 TX |
| 引脚 43 | PB14 — GPIO / SERCOM4 PAD2 |
| 引脚 44 | PB15 — GPIO / SERCOM4 PAD3 |
| 引脚 45 | PA27 — GPIO / SERCOM3 PAD3 |
| 引脚 46 | RESET — Reset (active low) |
| 引脚 47 | VDD — Digital supply voltage |
| 引脚 48 | GND — Ground |
| 引脚 49 | PA28 — GPIO |
| 引脚 50 | PA29 — GPIO |
| 引脚 51 | PA30 — GPIO / SWDIO |
| 引脚 52 | PA31 — GPIO / SWCLK |
| 引脚 53 | PB10 — GPIO |
| 引脚 54 | PB11 — GPIO |
| 引脚 55 | PB12 — GPIO / XIN32 (32.768 kHz crystal in) |
| 引脚 56 | PB13 — GPIO / XOUT32 (32.768 kHz crystal out) |
| 引脚 57 | PB14 — GPIO / XIN (main crystal in) |
| 引脚 58 | PB15 — GPIO / XOUT (main crystal out) |
| 引脚 59 | VDDANA — Analog supply voltage |
| 引脚 60 | GND — Ground |
| 引脚 61 | PB30 — GPIO / SERCOM5 PAD0 |
| 引脚 62 | PB31 — GPIO / SERCOM5 PAD1 |
| 引脚 63 | PC00 — GPIO |
| 引脚 64 | PC01 — GPIO |
典型应用
ATSAMD51J19A-AUT 适用于 7 应用s: Automotive Body Control Modules, Industrial HMI and Touch Controllers, USB HID and Composite Devices, Sensor Fusion IoT Edge Nodes, Motor Control and Drone ESCs, Audio Processing and Smart Speakers, Battery-Powered Data Loggers.
Automotive Body Control Modules
The ATSAMD51J19A-AUT's AEC-Q100 automotive qualification and integrated CAN-FD controller make it well suited for automotive body controllers managing lighting, door modules, mirror position, and seat control. The 120 MHz Cortex-M4F core executes complex LIN/CAN-FD stacks while the FPU accelerates sensor fusion. Its 64-TQFP (10x10 mm) footprint provides ample GPIO for relay and switch interfaces; the wide 1.71V-3.6V supply tolerates load-dump events when paired with proper TVS protection. Compared to discrete designs, a single-chip MCU with crypto accelerator + CAN-FD + AEC-Q100 qualification simplifies BOM and accelerates time-to-market for production-grade ECUs.
推荐
Industrial HMI and Touch Controllers
The ATSAMD51J19A-AUT is well suited for industrial HMI panels with capacitive touch and TFT displays. Its 120 MHz core renders LVGL and MEL drives which deliver responsive UI at 60+ FPS, while the 12-bit 1 MSPS ADC digitizes analog sensors. The six SERCOM interfaces handle SPI display, I2C touch controller, and UART debug ports simultaneously. The 64-TQFP package provides enough GPIO for backlight PWM, button scanning, and rotary encoders. Unlike host CPU + external controller designs, the integrated MCU reduces BOM and PCB area in panel-meter and operator-interface designs.
推荐
USB HID and Composite Devices
The ATSAMD51J19A-AUT integrates a USB 2.0 Full-Speed device/host port with internal transceiver, making it ideal for USB HID peripherals such as keyboards, gaming controllers, and composite-class devices. The 120 MHz Cortex-M4F core handles USB stack + class driver + application logic, while 512 KB Flash stores USB descriptors and composite interfaces. The 64-TQFP package supports USB Type-A connector footprints. Unlike external USB-interface IC designs, the integrated MCU eliminates the need for a companion interface chip and reduces BOM cost.
推荐
Sensor Fusion IoT Edge Nodes
The ATSAMD51J19A-AUT suits IoT edge nodes with sensor fusion workloads such as asset trackers, environmental monitors, and wearable health patches. The 120 MHz core + FPU executes Kalman filters and ML inference on accelerometer + gyroscope + magnetometer streams, while the six SERCOM interfaces connect to SPI sensors and I2C peripherals. The crypto accelerator enables secure-boot and TLS acceleration of IoT workloads. The 1.71V-3.6V supply supports direct Li-ion battery operation. Unlike external MCU + sensor hub designs, this integrated part reduces system cost and PCB footprint for compact IoT edge nodes.
推荐
Motor Control and Drone ESCs
The ATSAMD51J19A-AUT powers drone ESCs and BLDC motor controllers with FOC algorithms. The 120 MHz Cortex-M4F core + FPU executes FOC math at 32 kHz PWM frequency, while the 12-bit ADC samples phase currents with sub-microsecond conversion. The 64-TQFP package provides 6-PWM outputs suitable for 3-phase bridge drive. The AEC-Q100 qualification extends operating range to -40C to +85C, covering consumer and prosumer drones. Unlike external MCU + gate-driver designs, this integrated part reduces BOM and PCB area in compact drone ESC designs.
推荐
Audio Processing and Smart Speakers
The ATSAMD51J19A-AUT handles audio decoding and post-processing in smart speakers, soundbars, and headphone amplifiers. The 120 MHz core + FPU executes MP3/AAC decode + EQ + DRC, while the 12-bit DAC outputs audio line or drives soundbar. The I2S interface connects to external codec ICs. The 64-TQFP package provides GPIO for button input and LED feedback. Unlike external DSP + MCU designs, this integrated part reduces BOM cost in audio-processing applications.
推荐
Battery-Powered Data Loggers
The ATSAMD51J19A-AUT powers portable data loggers and BLE-enabled sensor loggers. The 120 MHz core executes compression algorithms while 512 KB Flash stores log data, and the 1.71V-3.6V supply supports single-cell Li-ion. The Event System enables low-power wake-from-sleep on sensor triggers. Unlike Cortex-M0+ parts, the M4F + FPU accelerates compression and enables local analytics. The 64-TQFP package supports compact PCB designs in portable and wearable applications.
推荐
推荐产品汇总
工程参考数据： ATSAMD51J19A-AUT ——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-AU | ATSAMD51J20A-AUT | ATSAMD51J18A-AUT | ATSAME51J19A-AU | ATSAME51J20A-AU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same |
| Core | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz (no TrustZone-M) | Cortex-M4F 120 MHz (no TrustZone-M) |
| Flash | 512 KB | 512 KB | 1 MB (+100%) | 256 KB (-50%) | 512 KB | 1 MB (+100%) |
| SRAM | 192 KB | 192 KB | 256 KB | 128 KB | 192 KB | 256 KB |
| AEC-Q100 | Yes (AUT) | No (industrial AU) | Yes (AUT) | Yes (AUT) | No (industrial AU) | No (industrial AU) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| CAN-FD | Yes | Yes | Yes | Yes | Yes | Yes |
关键差异点
- AEC-Q100 automotive qualification with 64-TQFP (10x10 mm) package （对比 ATSAMD51J19A-AU)
- Mid-tier Flash density with dual-panel read-while-write （对比 ATSAMD51J18A-AUT)
- ARM Cortex-M4F with FPU and DSP extensions （对比 ATSAME51J20A-EK)
设计说明
The ATSAMD51J19A-AUT requires separate VDD and VDDANA supplies; both should be decoupled with 100 nF + 1 uF ceramic capacitors placed within 5 mm of the supply pins, plus a 10 uF bulk capacitor per supply rail. Use a ferrite bead between VDD and VDDANA to isolate analog noise from the digital core. Estimated: total decoupling budget is approximately 0.5 cm^2 of PCB footprint for the supply-pin capacitor network.
Place the 32.768 kHz crystal within 5 mm of pins XIN32/XOUT32 (typically PB12/PB13 in the 64-TQFP package) with a guarded ground plane around both crystal leads. Keep high-speed traces (USB D+/D-, SERCOM signals) at least 3 mm away from the crystal area. Route the main 8-12 MHz crystal traces symmetrically from XIN/XOUT to ground guard ring.
Do not omit the 0-ohm ferrite bead between VDD and VDDANA, or analog ADC readings will show digital switching spurs. The SAM G92F supports multiple sleep modes; ensure unused SERCOM peripherals are disabled in PMUX registers to avoid leakage in standby. The AEC-Q100 'AUT' suffix confirms only -40C to +85C grade; for +125C automotive, use the 'AUT' parts explicitly rated for extended automotive range.
Estimated: At 120 MHz active operation with full peripheral activity, core current draw is approximately 30-40 mA, and standby current is below 50 uA. The 64-TQFP (10x10 mm) package has theta_JA of approximately 50 C/W, sufficient for most consumer/automotive applications without external heatsinking.
合规信息
AEC-Q100 qualified automotive grade per 'AUT' suffix; RoHS and REACH compliant per Microchip product page. Industrial grade ATSAMD51J19A-AU is also available with the same package for non-automotive designs.
