ATSAMD51J19A-AFT - 120MHz Cortex-M4F MCU 512KB Flash | Microchip
MPN: ATSAMD51J19A-AFT ✓ Hoạt độngATSAMD51J19A-AFT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals (ADC, DAC, timers, GPIO, communication interfaces) into one IC. The ATSAMD51J19A-AFT belongs to the ARM Cortex-M4F family, which sits in the Cortex-M hierarchy between the Cortex-M0+ (lowest performance, lowest power) and Cortex-M7 (highest performance). The M4F adds DSP extensions and a hardware FPU that accelerates single-precision floating-point math. Microcontrollers such as this one are the workhorse of embedded designs: they sit below SoCs and microprocessors in capability but above simple digital logic in programmability, and they form the brain of nearly every battery-powered or motor-controlled end product.
Key features include a 120 MHz Cortex-M4F core with FPU and DSP instructions, 512 KB dual-panel Flash with ECC, 192 KB SRAM, a 12-bit 1 Msps ADC with up to 16 channels, two 12-bit DACs, six SERCOM configurable as USART/SPI/I2C, I2S, USB 2.0 Full Speed with embedded PHY, a CAN-FD interface, and a 51-pin GPIO count. The part integrates a 16-channel Event System, a Parallel Capture Controller, and a 32-bit Real-Time Clock with calendar mode. TrustZone-M is not present on this variant; that feature is reserved for SAM L11 family members.
Architecturally, the SAM D51 uses a Harvard-style bus matrix connecting the Cortex-M4F core to Flash via a 2-channel prefetch buffer that masks Flash wait states, plus an AHB/APB bridge for peripherals. The dual-panel Flash architecture allows simultaneous read-while-write, enabling live firmware updates without an external bootloader. The 31 kHz to 120 MHz DFLL and the 32 kHz to 48 MHz DPLL provide fractional-N frequency synthesis, so the system clock can be generated from a low-cost 32.768 kHz crystal while still achieving jitter performance suitable for CAN-FD and USB Full Speed.
Typical applications include automotive body controllers and HVAC actuators, industrial HMI communication panels, drone flight controllers (companion to a wireless SoC), USB-CDC/Bridge dongles, sensor fusion hubs, and low-power IoT edge nodes. Design considerations for this part center on decoupling (a 100 nF cap within 2 mm of each VDDCORE/VDDIO supply pin is mandatory), SWD layout for Cortex-M4F debug access, and USB DP/DN trace impedance matching to 90 ohms differential for Full Speed compliance.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD51J19A-AFT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAMD51J19A-AFT (cùng hình factor và footprint) — khác nhau ở DAC, Package, SRAM, Operating Temperature, USB.
ATSAMD51J19A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J18A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J18A-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J18A-AU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J19A-AFT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M4F with FPU and DSP |
| Maximum CPU Clock | 120 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) dual-panel with ECC |
| SRAM | 192 KB |
| Supply Voltage Range | 1.71 V to 3.63 V (3.3 V nominal) |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (automotive grade) |
| Hộp | 64-pin TQFP (10x10 mm) |
| GPIO Count | 51 |
| ADC | 12-bit, up to 16 channels, 1 Msps |
| DAC | Two 12-bit DAC outputs |
| Communication Interfaces | 6x SERCOM (USART/SPI/I2C), I2S, USB 2.0 FS with embedded PHY, CAN-FD |
| Timers/Counters | 5x 16-bit TC, 32-bit RTC with calendar |
| DMA Channels | 32 (separate descriptor RAM) |
| Event System | 16 channels, peripheral-to-peripheral |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| AEC-Q100 | Qualified (automotive grade) |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATSAMD51J19A-AFT
| Chân 1 | PA00 — GPIO/ADC, XIN32 |
| Chân 2 | PA01 — GPIO/ADC, XOUT32 |
| Chân 3 | PA02 — GPIO/AIN0 |
| Chân 4 | PA03 — GPIO/AIN1 |
| Chân 5 | GND — Ground |
| Chân 6 | VDDIO — I/O supply (1.71V-3.63V) |
| Chân 7 | PA04 — GPIO/AIN2 |
| Chân 8 | PA05 — GPIO/AIN3 |
| Chân 9 | PA06 — GPIO/AIN4 |
| Chân 10 | PA07 — GPIO/AIN5 |
| Chân 11 | PA08 — GPIO/AIN6, NMI |
| Chân 12 | PA09 — GPIO/AIN7 |
| Chân 13 | PA10 — GPIO/AIN8 |
| Chân 14 | PA11 — GPIO/AIN9 |
| Chân 15 | VDDIO — I/O supply |
| Chân 16 | GND — Ground |
| Chân 17 | PB10 — GPIO |
| Chân 18 | PB11 — GPIO |
| Chân 19 | PB12 — GPIO |
| Chân 20 | PB13 — GPIO |
| Chân 21 | PB14 — GPIO |
| Chân 22 | PB15 — GPIO |
| Chân 23 | PA12 — GPIO |
| Chân 24 | PA13 — GPIO |
| Chân 25 | PA14 — GPIO |
| Chân 26 | PA15 — GPIO |
| Chân 27 | PA16 — GPIO |
| Chân 28 | PA17 — GPIO |
| Chân 29 | PA18 — GPIO |
| Chân 30 | PA19 — GPIO |
| Chân 31 | PA20 — GPIO |
| Chân 32 | PA21 — GPIO |
| Chân 33 | PA22 — GPIO |
| Chân 34 | PA23 — GPIO |
| Chân 35 | PA24 — GPIO |
| Chân 36 | PA25 — GPIO |
| Chân 37 | GND — Ground |
| Chân 38 | VDDIO — I/O supply |
| Chân 39 | PA26 — GPIO |
| Chân 40 | PA27 — GPIO |
| Chân 41 | PA28 — GPIO |
| Chân 42 | PA29 — GPIO |
| Chân 43 | PA30 — GPIO |
| Chân 44 | PA31 — GPIO |
| Chân 45 | PB16 — GPIO |
| Chân 46 | PB17 — GPIO |
| Chân 47 | PB18 — GPIO |
| Chân 48 | PB19 — GPIO |
| Chân 49 | PB20 — GPIO |
| Chân 50 | PB21 — GPIO |
| Chân 51 | PB22 — GPIO |
| Chân 52 | PB23 — GPIO |
| Chân 53 | PB24 — GPIO |
| Chân 54 | PB25 — GPIO |
| Chân 55 | PB26 — GPIO |
| Chân 56 | PB27 — GPIO |
| Chân 57 | PB28 — GPIO |
| Chân 58 | PB29 — GPIO |
| Chân 59 | PB30 — GPIO |
| Chân 60 | PB31 — GPIO |
| Chân 61 | NRST — Reset (active low) |
| Chân 62 | SWDIO — Serial Wire Debug I/O |
| Chân 63 | SWCLK — Serial Wire Debug Clock |
| Chân 64 | VDDIO — I/O supply |
Ứng dụng tiêu biểu
ATSAMD51J19A-AFT phù hợp cho 6 Áp dụngs: Automotive Body Control Modules, Industrial HMI Communication Panels, Drone Flight Controller Companion, USB-to-CAN/CAN-FD Bridge Dongle, Sensor Fusion Hubs, IoT Edge Node with USB Connectivity.
Automotive Body Control Modules
The ATSAMD51J19A-AFT fits automotive BCMs because its AEC-Q100 qualification, -40 C to +125 C operating range, and 120 MHz Cortex-M4F core with DSP extensions accelerate CAN-FD message handling and low-latency GPIO control. Its 512 KB Flash supports AUTOSAR-compatible applications with room for bootloader and CAN stack, and the embedded USB 2.0 Full Speed with PHY enables diagnostic interfaces (UDS over USB) without external transceivers. The dual-panel Flash with ECC allows read-while-write OTA updates critical for end-of-line vehicle firmware refresh. Place the part on the BCM PCB near a TJA1057T CAN-FD transceiver and add a 32.768 kHz crystal on XIN32/XOUT32 for RTC and CAN-FD timing.
Được đề xuất
Industrial HMI Communication Panels
The ATSAMD51J19A-AFT serves industrial HMI touch panels where its 120 MHz Cortex-M4F + FPU accelerates vector graphics rendering for small TFT displays while the integrated 12-bit ADC samples touch-screen analog front-ends. Its USB 2.0 Full Speed PHY allows field firmware updates via USB stick, and the two 12-bit DACs drive audio feedback for alarm tones. The 192 KB SRAM is enough for double-buffered 320x240 LCD framebuffers without external SDRAM. Add an external W25Q SPI Flash for font/glyph storage and pair with an ILI9341 TFT controller over SPI for full HMI capability.
Được đề xuất
Drone Flight Controller Companion
The ATSAMD51J19A-AFT powers hobbyist and prosumer drone flight controllers where its 120 MHz Cortex-M4F + DSP runs PID loops at 8 kHz and a Kalman filter for IMU fusion in real time. The 192 KB SRAM supports double-buffered IMU reads at 1 kHz with state vectors held in RAM, while the dual-panel Flash supports in-field PID gain tuning without bootloader risk. Six SERCOM channels let you connect GPS (UART), ESC telemetry (UART), compass (I2C), barometer (I2C), optical flow (SPI), and a wireless SoC for control link. Add an MPU-6000 IMU over SPI and a BMP280 barometer over I2C for full 6-DoF + altitude flight control.
Được đề xuất
USB-to-CAN/CAN-FD Bridge Dongle
The ATSAMD51J19A-AFT enables compact USB-to-CAN-FD diagnostic dongles thanks to its USB 2.0 Full Speed with embedded PHY and CAN-FD peripheral. The 120 MHz Cortex-M4F + FPU offloads CAN-FD framing from the host PC while 512 KB Flash stores slcan/python-can firmware and a CDC-ACM device stack. 192 KB SRAM buffers CAN-FD frames at 5 Mbit/s. Place the part next to a TJA1057T CAN-FD transceiver on a 2-layer PCB and route DP/DN as a 90 ohm differential pair - the design fits in a 30x40 mm USB stick enclosure.
Được đề xuất
Sensor Fusion Hubs
The ATSAMD51J19A-AFT is ideal for IoT sensor fusion hubs because its Cortex-M4F + DSP extensions handle 9-DoF sensor fusion (accelerometer + gyro + magnetometer) at low latency, and its 12-bit 1 Msps ADC samples up to 16 analog sensors. Six SERCOM ports enable simultaneous SPI, I2C, and UART sensor connectivity while USB 2.0 Full Speed PHY carries data to a host PC. The dual-panel Flash supports over-the-air firmware updates for evolving sensor algorithms. Pair with an LSM9DS1 IMU and a VL53L1X time-of-flight sensor to build a robotics-grade fusion node.
Được đề xuất
IoT Edge Node with USB Connectivity
The ATSAMD51J19A-AFT powers low-power IoT edge nodes needing local sensor processing plus USB-CDC debugging. Its 120 MHz Cortex-M4F + FPU executes TinyML inference models (CMSIS-NN) while the 192 KB SRAM holds activation buffers. The integrated USB 2.0 Full Speed PHY eliminates external transceiver cost and board area. Sleep current drops below 10 uA in STANDBY with RTC running on the 32.768 kHz crystal, suitable for battery-powered edge nodes with years of standby life. Pair with an ESP32-C3 wireless companion over UART for cloud connectivity.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD51J19A-AFT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAMD51J19A-AUT | ATSAMD51J18A-AUT | ATSAMD51J18A-MU | ATSAMD51J18A-AU-EFP | ATSAMD51G19A-MFT |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 48-TQFP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz | Cortex-M4F, 120 MHz |
| Flash | 512 KB | 512 KB | 256 KB (-50%) | 256 KB (-50%) | 256 KB (-50%) | 512 KB |
| SRAM | 192 KB | 192 KB | 128 KB | 128 KB | 128 KB | 192 KB |
| AEC-Q100 | Qualified | Qualified | Qualified | Not qualified (industrial) | Not qualified (industrial) | Not qualified (industrial) |
| USB 2.0 FS PHY | Embedded | Embedded | Embedded | Embedded | Embedded | Embedded |
| GPIO Count | 51 | 51 | 51 | 51 | 51 | ~38 (48-TQFP has fewer pins) |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Bảo phân biệt quan trọng
- Dual-panel Flash with read-while-write ECC (vsATSAMD51J18A-AUT)
- AEC-Q100 automotive qualification vs industrial grade (vsATSAMD51J18A-MU)
- 64-pin TQFP vs 48-pin TQFP for higher GPIO count (vsATSAMD51G19A-MFT)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor within 2 mm of every VDDIO and VDDCORE pin. Per the SAM D51 datasheet DS60001579F, VDDIO and VDDCORE must each have at least one bulk 4.7 uF ceramic. The 32.768 kHz crystal on XIN32/XOUT32 must be placed within 5 mm of the IC with short traces to minimize load capacitance mismatch. SWDIO and SWCLK traces should be no longer than 100 mm and route away from noisy switching nodes.
Route USB DP/DN as a 90 ohm differential pair with length matching within 150 mil. Per the SAM D51 datasheet, USB Full Speed signaling requires the impedance-controlled differential pair to maintain signal integrity. Add a common-mode choke near the USB connector and ensure the ground reference under the DP/DN pair is uninterrupted. Add 15 kohm pull-down resistors on both DP and DN if the design is bus-powered and might be hot-plugged.
Do not skip configuration of the NVM user row before first boot - the SAM D51 may boot in an unknown clock configuration if GCLK0 source is not set. Per the errata documents for SAMD51 silicon revision D, you must set the DPLL multiplier and divider before switching GCLK to DPLL. Estimated: with XOSC32K as reference, GCLK_DPLL_RATIO=599 gives 120 MHz when DPLL_REF=32.768 kHz. Always program the brown-out detector (BODVDD) to its recommended threshold before enabling the regulator.
Estimated: at 120 MHz and 3.3 V, the SAM D51 core dissipates about 120 mW typical and up to 300 mW peak under heavy DMA/CPU load. The 64-TQFP package has a theta_JA of approximately 45 C/W (4-layer PCB), giving a junction temperature rise of 5.4 C typical and 13.5 C peak above ambient - well within the 125 C automotive limit. No heatsink required for typical operating conditions.
Thông tin tuân thủ
AEC-Q100 qualified per Microchip automotive grade certification. RoHS and REACH compliant per DigiKey product attributes. Lead-free and halogen-free confirmed by Microchip product family documentation.
