ATSAME51J19A-AU - ARM Cortex-M4F 120MHz 512KB MCU | Microchip
MPN: ATSAME51J19A-AU ✓ Hoạt độngATSAME51J19A-AU Tóm tắt
A 32-bit ARM Cortex-M microcontroller is a system-on-chip combining a processor core, on-chip memory, and peripherals around a unified bus matrix. Within the broader taxonomy it sits under MCU (microcontroller) -> embedded processor -> semiconductor IC. The Cortex-M4F specifically adds DSP extensions and an FPU, letting engineers execute signal-processing and control loops in hardware instead of software emulation, which directly reduces CPU load and improves determinism.
Key features include 120 MHz CPU clock with FPU, 512 KB dual-bank Flash that supports live update, full-speed USB 2.0 device/host, CAN 2.0B and CAN-FD, up to 6 SERCOM channels each configurable as UART/SPI/I2C, a 12-bit ADC up to 1 Msps, a 10-bit DAC, AES/SHA hardware crypto accelerator, and a 2 KB additional user row for EEPROM emulation. Operating voltage is 1.71 V to 3.63 V and junction range is -40 C to +85 C (industrial grade, AU suffix).
Architecturally, the device uses a multi-layer AHB bus matrix connecting the Cortex-M4F core, DMA controller (24 channels), HS USB, and peripherals, allowing concurrent bus-master activity without starvation. The dual-panel Flash with Prefetch and Cache, plus the FPU, deliver >230 CoreMark/MHz-class performance while keeping active current under typical industrial budgets.
Typical applications include industrial control (PLC, motor control), USB peripherals, CAN-FD nodes in automotive and industrial networks, HMI with touch and TFT, smart energy metering, and IoT gateways. Design considerations include mandatory 0.1 uF + 1 uF decoupling near VDD/VSS pairs, exposure-pad grounding for thermal relief, and route the HS USB D+/D- as a 90-ohm differential pair. Pin-compatible same-family options such as ATSAME51J20A (1 MB Flash) allow post-design memory upgrades without PCB rework.
This page synthesizes distributor pricing, same-family drop-in alternatives (ATSAME51J18A-AU, ATSAME51J20A-AU, ATSAMD51J19A-AU, ATSAMDA1F15B-AU), practical design notes, and parametric comparisons that supplement the manufacturer datasheet and distributor listings.
Bộ thay thế dễ dàng lắp đặt cho ATSAME51J19A-AU — 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 ATSAME51J19A-AU (cùng hình factor và footprint) — khác nhau ở ADC, USB, CAN, Flash Memory, Package.
ATSAME51J18A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J20A-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J19A-AUT-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51N20A-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51G19A-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J19A-AU Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M4F with FPU |
| Maximum CPU Frequency | 120 MHz |
| Program Flash | 512 KB (dual-panel, 512K x 8) |
| Operating Voltage | 1.71 V to 3.63 V |
| Hộp | 64-pin TQFP (10x10 mm) |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial, AU) |
| High-Speed USB | USB 2.0 Full-Speed Device/Host |
| CAN | CAN 2.0B and CAN-FD |
| SERCOM Channels | Up to 6 (configurable UART/SPI/I2C) |
| ADC | 12-bit SAR, up to 1 Msps |
| DAC | 10-bit, 1 Msps |
| Crypto Accelerator | AES 256-bit / SHA-256 hardware accelerator |
| DMA Channels | 24 |
| Số chân | 64 |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 |
| Bootloader | On-chip bootloader via UART/USB |
Cấu hình chân ATSAME51J19A-AU
| Chân 1 | VDD — Digital supply voltage |
| Chân 2 | VSS — Digital ground |
| Chân 3 | PA00 — GPIO / XIN |
| Chân 4 | PA01 — GPIO / XOUT |
| Chân 5 | PA02 — GPIO / AIN0 |
| Chân 6 | PA03 — GPIO / AIN1 |
| Chân 7 | PA04 — GPIO / AIN2 / VREF |
| Chân 8 | PA05 — GPIO / AIN3 |
| Chân 9 | PA06 — GPIO / AIN4 |
| Chân 10 | PA07 — GPIO / AIN5 |
| Chân 11 | VDD — Digital supply voltage |
| Chân 12 | VSS — Digital ground |
| Chân 13 | PB00 — GPIO |
| Chân 14 | PB01 — GPIO |
| Chân 15 | PB02 — GPIO / SERCOM5 PAD2 |
| Chân 16 | PB03 — GPIO / SERCOM5 PAD3 |
| Chân 17 | PB04 — GPIO / SERCOM5 PAD0 |
| Chân 18 | PB05 — GPIO / SERCOM5 PAD1 |
| Chân 19 | PB06 — GPIO |
| Chân 20 | PB07 — GPIO |
| Chân 21 | PB08 — GPIO |
| Chân 22 | PB09 — GPIO |
| Chân 23 | PA08 — GPIO / I2S MCK0 |
| Chân 24 | PA09 — GPIO / I2S MCK1 |
| Chân 25 | PA10 — GPIO |
| Chân 26 | PA11 — GPIO |
| Chân 27 | VDDIO — I/O supply voltage |
| Chân 28 | VSSIO — I/O ground |
| Chân 29 | PA12 — GPIO / CAN0 RX |
| Chân 30 | PA13 — GPIO / CAN0 TX |
| Chân 31 | PA14 — GPIO |
| Chân 32 | PA15 — GPIO |
| Chân 33 | PA16 — GPIO |
| Chân 34 | PA17 — GPIO |
| Chân 35 | PA18 — GPIO |
| Chân 36 | PA19 — GPIO |
| Chân 37 | PA20 — GPIO |
| Chân 38 | PA21 — GPIO |
| Chân 39 | PA22 — GPIO |
| Chân 40 | PA23 — GPIO |
| Chân 41 | PA24 — GPIO / USB D- |
| Chân 42 | PA25 — GPIO / USB D+ |
| Chân 43 | VBUS — USB VBUS sense |
| Chân 44 | VDD — Digital supply voltage |
| Chân 45 | VSS — Digital ground |
| Chân 46 | PA26 — GPIO |
| Chân 47 | PA27 — GPIO |
| Chân 48 | PA28 — GPIO |
| Chân 49 | PA29 — GPIO |
| Chân 50 | PA30 — GPIO / SWCLK |
| Chân 51 | PA31 — GPIO / SWDIO |
| Chân 52 | RESET — Reset input, active-low |
| Chân 53 | VDDIO — I/O supply voltage |
| Chân 54 | VSSIO — I/O ground |
| Chân 55 | PB10 — GPIO |
| Chân 56 | PB11 — GPIO |
| Chân 57 | PB12 — GPIO |
| Chân 58 | PB13 — GPIO |
| Chân 59 | PB14 — GPIO |
| Chân 60 | PB15 — GPIO |
| Chân 61 | PB16 — GPIO |
| Chân 62 | PB17 — GPIO |
| Chân 63 | PB18 — GPIO |
| Chân 64 | PB19 — GPIO |
Ứng dụng tiêu biểu
ATSAME51J19A-AU phù hợp cho 6 Áp dụngs: Industrial Control and PLC, USB Peripherals and HID Devices, CAN-FD Automotive and Industrial Networks, Human-Machine Interface (HMI) with Touch and TFT, Smart Energy Metering, IoT Gateway and Edge Connectivity.
Industrial Control and PLC
The ATSAME51J19A-AU fits industrial control and PLC applications because its 120 MHz Cortex-M4F with FPU executes PID loops and IEC 61131-3 logic with deterministic latency. The 512 KB dual-panel Flash supports large ladder-logic and Modbus libraries, while 24 DMA channels offload sensor-streaming without CPU stalls. Industrial temperature range -40 C to +85 C, full-speed USB for HMI panels, and SERCOM channels configurable as RS-485/RS-232 via external transceivers meet the typical I/O density and isolation requirements of a 32-point PLC node.
Được đề xuất
USB Peripherals and HID Devices
The ATSAME51J19A-AU integrates a USB 2.0 Full-Speed device/host port with internal PHY, eliminating external transceivers for HID keyboards, custom input devices, and instrumentation peripherals. The 120 MHz Cortex-M4F runs USB stacks plus real-time signal processing with low latency, while 192 KB SRAM buffers USB isochronous endpoints. Pin-compatible same-family upgrades (ATSAMD51J19A-AU) add Ethernet when the device graduates from USB to networked use, without PCB rework.
Được đề xuất
CAN-FD Automotive and Industrial Networks
The ATSAME51J19A-AU provides CAN 2.0B and CAN-FD controllers matched to an external CAN-FD transceiver for in-vehicle and industrial network nodes. Its 120 MHz Cortex-M4F processes CAN-FD payloads (up to 64-byte frames) faster than legacy 8/16-bit MCUs, while the dual-panel Flash supports live firmware update over CAN for safety-critical body and chassis modules. The 64-pin TQFP and SERCOM flexibility enable same-hardware reuse across CAN, LIN, and sensor actuator daughter-boards.
Được đề xuất
Human-Machine Interface (HMI) with Touch and TFT
For HMI panels, the ATSAME51J19A-AU drives a TFT LCD through the EBI or SERCOM-based SPI/QSPI interface and supports capacitive touch via the on-chip Peripheral Touch Controller (PTC). The 120 MHz Cortex-M4F with FPU renders GUIs and runs LVGL-style graphics smoothly, while AES-256/SHA-256 hardware acceleration secures touch and user credentials. The 64-pin TQFP footprint leaves enough GPIO for backlight PWM, buzzer, and rotary encoder inputs typical in a 3.5-inch industrial HMI.
Được đề xuất
Smart Energy Metering
The ATSAME51J19A-AU is well suited to single-phase and poly-phase smart meters because its 12-bit 1 Msps ADC samples voltage and current with high accuracy, the FPU computes FFT-based harmonic analysis, and AES-256 secures DLMS/COSEM or proprietary communication. Its 1.71 V to 3.63 V supply range handles direct battery backup, while industrial temperature range -40 C to +85 C meets outdoor enclosure requirements. Same-footprint upgrade to ATSAME51J20A-AU accommodates more metering firmware features without board respin.
Được đề xuất
IoT Gateway and Edge Connectivity
The ATSAME51J19A-AU serves as an edge-of-network bridge because it integrates Cortex-M6 with crypto, dual-panel Flash for OTA, USB device for commissioning, and CAN-FD plus Ethernet via the pin-compatible ATSAMD51J19A-AU upgrade. Its 120 MHz core and 192 KB SRAM run lightweight TLS, MQTT, and LwIP stacks without external memory, and the 64-pin TQFP keeps the BOM small for compact gateways. The pin-compatible J20A variant adds headroom for LWM2M or Matter protocol stacks on the same PCB.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAME51J19A-AU — 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 | ATSAME51J18A-AU | ATSAME51J20A-AU | ATSAMD51J19A-AU | ATSAME51N20A-AU | ATSAME51G19A-MU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 48-pin QFN (7x7 mm) |
| Core / Max Frequency | 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 | 256 KB | 1 MB | 512 KB | 1 MB | 512 KB |
| USB | FS Device/Host | FS Device/Host | FS Device/Host | FS Device/Host | FS Device/Host | FS Device/Host |
| CAN-FD | Yes | Yes | Yes | Yes | Yes | Yes |
| Ethernet MAC | No | No | No | Yes (GMAC) | No | No |
| Operating Voltage | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V | 1.71 V to 3.63 V |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
| Approx. Unit Price @ 1k (USD) | 3.86 | 3.45 | 4.10 | 4.25 | 4.50 | 3.95 |
Bảo phân biệt quan trọng
- Dual-panel 512 KB Flash supports live firmware update without downtime (vsATSAME51J18A-AU)
- Same-family drop-in upgrade path to Ethernet MAC and upgraded crypto (vsATSAMD51J19A-AU)
- Higher pin count and more I/O than 48-pin QFN alternative (vsATSAME51G19A-MU)
- Crypto accelerator reduces TLS handshake latency versus software-only stacks (vsATSAMD51J19A-AU (firmware-only crypto))
Ghi chú thiết kế
Place a 1 uF X7R ceramic plus 0.1 uF X7R decoupling cap within 2 mm of every VDD/VSS pin pair. The 120 MHz Cortex-M4F core creates 200 mA-class dynamic current spikes; a 10 uF bulk capacitor near the regulator and a ferrite bead between analog and digital rails further reduce switching noise coupling into the 12-bit ADC.
Route the USB D+/D- pair as a 90-ohm differential with matched length to within 150 mil; place the 27-ohm series resistors near the MCU, and add a common-mode choke for ESD immunity. Keep the differential pair away from the CAN-FD and SERCOM switching traces. The 64-pin TQFP (10x10 mm) layout benefits from a continuous ground pour beneath the exposed pad row and stitching vias every 10 mm.
Assign pin functions before layout: reserve PA24/PA25 for USB, PB12/PB13 or PA12/PA13 for CAN-FD, and PA30/PA31 for SWD. Lock these pins in the Atmel Start / MPLAB X project so subsequent peripheral additions do not violate USB impedance or CAN bus timing constraints.
The dual-panel Flash appears as a single contiguous region in the linker script but writes must target an inactive bank before swapping. Configure FCR.CTRLA.WP and NVMCTRL.CTRLB carefully and avoid bank-switch operations while interrupts reference code in the inactive bank. Forgetting to disable interrupts during bank swap is the most common cause of bootloader stalls in production firmware.
Estimated: at full 120 MHz core activity and 3.63 V supply, internal current is roughly 30-40 mA, giving 100-150 mW dissipation. With the 64-pin TQFP theta_JA of approximately 55 C/W on a 2-layer 1-oz board, junction rise is around 8 C above ambient, well within the -40 C to +85 C industrial range. Improving to a 4-layer board lowers theta_JA below 35 C/W for safety margin in enclosed enclosures.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose ATSAMx51xxx-MUT or ATSAMx51xxx-AUT automotive variants for AEC-Q100 Grade 1/2.
