ATSAMD51N19A-AF - 120MHz Cortex-M4F MCU, 512KB Flash | Microchip
MPN: ATSAMD51N19A-AF ✓ Hoạt độngATSAMD51N19A-AF Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals around a common bus. Within the embedded semiconductor taxonomy, MCUs sit below microprocessors (which require external memory) and above basic ASICs in capability. The SAM D51 family is positioned as a high-performance general-purpose MCU, using the ARM Cortex-M4F core with single-precision FPU to accelerate DSP and floating-point control loops. ECC-protected Flash and SRAM target safety-critical and industrial applications where soft-error reliability matters.
Key features of the ATSAMD51N19A-AF include 120 MHz core clock with DSP extensions, 512 KB dual-panel Flash, up to 192 KB SRAM, six SERCOM modules configurable as UART/SPI/I2C, one full-speed USB 2.0 device/host, up to 12-bit 1 MSPS ADC with up to 16 channels, dual 12-bit DACs, four TC capture/compare/PWM channels, and a True Random Number Generator. The device supports 1.62V-3.6V supply and an extended industrial temperature range of -40C to +125C.
Architecturally, the ATSAMD51N19A-AF uses a 5-stage pipeline ARM Cortex-M4F core with single-precision FPU, MPU, and CoreSight debug. The dual-panel Flash allows simultaneous read/write, enabling live firmware updates without CPU stalls. The peripheral event system enables deterministic inter-peripheral signaling without CPU intervention, critical for motor control and power conversion applications.
Typical applications include industrial control (PLC I/O modules, motor drives), IoT edge nodes with secure TLS acceleration, USB peripherals (HID, CDC, composite), human-machine interfaces (HMI) with TFT touch control, audio processing with on-chip DAC, and portable instrumentation. The integrated crypto engine also suits secure-boot and OTA update designs.
When designing with the ATSAMD51N19A-AF, ensure decoupling follows the datasheet reference layout with 100 nF caps at each supply pin and a bulk 4.7 uF cap near the package. The TC and ADC reference grounds must be tied to a low-impedance analog ground plane. Verify the extended temperature option (-AF suffix) matches your application's thermal envelope.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, providing comparison-ready data for sourcing decisions.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD51N19A-AF — 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 ATSAMD51N19A-AF (cùng hình factor và footprint) — khác nhau ở USB, DAC, Operating Temperature, Package, ADC.
ATSAMD51N19A-AFT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J20A-MF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J20A-MFT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J19A-MF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J18A-AU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51G19A-MFT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51N19A-AF Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M4F with FPU |
| Maximum CPU Frequency | 120 MHz |
| Program Flash Memory | 512 KB (dual-panel, with ECC) |
| SRAM | 192 KB (with ECC) |
| Hộp | 100-pin TQFP (14x14 mm) |
| Operating Voltage | 1.62 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +125C (extended) |
| ADC | 12-bit, up to 1 MSPS |
| DAC | Dual 12-bit |
| USB | USB 2.0 Full-Speed device/host |
| SERCOM Modules | 6 (configurable UART/SPI/I2C) |
| Crypto Engine | AES, SHA, TRNG |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (168 hours) |
Cấu hình chân ATSAMD51N19A-AF
| Chân 1 | VDDIO — Digital I/O supply voltage |
| Chân 2 | PA00 — I/O line A00 (GPIO, analog) |
| Chân 3 | PA01 — I/O line A01 (GPIO, analog) |
| Chân 4 | PA02 — I/O line A02 (GPIO, analog) |
| Chân 5 | PA03 — I/O line A03 (GPIO, analog) |
| Chân 6 | GND — Ground |
| Chân 7 | PA04 — I/O line A04 (GPIO, analog) |
| Chân 8 | PA05 — I/O line A05 (GPIO, analog) |
| Chân 9 | PA06 — I/O line A06 (GPIO, analog) |
| Chân 10 | PA07 — I/O line A07 (GPIO, analog) |
| Chân 11 | VDDIO — Digital I/O supply voltage |
| Chân 12 | PA08 — SERCOM0/PAD0 or GPIO |
| Chân 13 | PA09 — SERCOM0/PAD1 or GPIO |
| Chân 14 | PA10 — SERCOM0/PAD2 or GPIO |
| Chân 15 | PA11 — SERCOM0/PAD3 or GPIO |
| Chân 16 | PA12 — SERCOM1/PAD0 or GPIO |
| Chân 17 | PA13 — SERCOM1/PAD1 or GPIO |
| Chân 18 | PA14 — SERCOM1/PAD2 or GPIO |
| Chân 19 | PA15 — SERCOM1/PAD3 or GPIO |
| Chân 20 | GND — Ground |
| Chân 21 | PA16 — SERCOM2/PAD0 or GPIO |
| Chân 22 | PA17 — SERCOM2/PAD1 or GPIO |
| Chân 23 | PA18 — SERCOM2/PAD2 or GPIO |
| Chân 24 | PA19 — SERCOM2/PAD3 or GPIO |
| Chân 25 | PA20 — SERCOM3/PAD0 or GPIO |
| Chân 26 | PA21 — SERCOM3/PAD1 or GPIO |
| Chân 27 | PA22 — SERCOM3/PAD2 or GPIO |
| Chân 28 | PA23 — SERCOM3/PAD3 or GPIO |
| Chân 29 | PA24 — USB DP or GPIO |
| Chân 30 | PA25 — USB DM or GPIO |
| Chân 31 | VDDIO — Digital I/O supply voltage |
| Chân 32 | GND — Ground |
| Chân 33 | PB00 — I/O line B00 (GPIO, analog) |
| Chân 34 | PB01 — I/O line B01 (GPIO, analog) |
| Chân 35 | PB02 — SERCOM4/PAD0 or GPIO |
| Chân 36 | PB03 — SERCOM4/PAD1 or GPIO |
| Chân 37 | PB04 — SERCOM4/PAD2 or GPIO |
| Chân 38 | PB05 — SERCOM4/PAD3 or GPIO |
| Chân 39 | PB06 — SERCOM5/PAD0 or GPIO |
| Chân 40 | PB07 — SERCOM5/PAD1 or GPIO |
| Chân 41 | PB08 — SERCOM5/PAD2 or GPIO |
| Chân 42 | PB09 — SERCOM5/PAD3 or GPIO |
| Chân 43 | GND — Ground |
| Chân 44 | PB10 — I/O line B10 (GPIO, analog) |
| Chân 45 | PB11 — I/O line B11 (GPIO, analog) |
| Chân 46 | PB12 — TC0/WO0 or GPIO |
| Chân 47 | PB13 — TC0/WO1 or GPIO |
| Chân 48 | PB14 — TC1/WO0 or GPIO |
| Chân 49 | PB15 — TC1/WO1 or GPIO |
| Chân 50 | PB16 — TC2/WO0 or GPIO |
| Chân 51 | PB17 — TC2/WO1 or GPIO |
| Chân 52 | VDDIO — Digital I/O supply voltage |
| Chân 53 | PB18 — I/O line B18 (GPIO, analog) |
| Chân 54 | PB19 — I/O line B19 (GPIO, analog) |
| Chân 55 | PB20 — I/O line B20 (GPIO, analog) |
| Chân 56 | PB21 — I/O line B21 (GPIO, analog) |
| Chân 57 | PB22 — I/O line B22 (GPIO, analog) |
| Chân 58 | PB23 — I/O line B23 (GPIO, analog) |
| Chân 59 | PB24 — I/O line B24 (GPIO, analog) |
| Chân 60 | PB25 — I/O line B25 (GPIO, analog) |
| Chân 61 | PC00 — I/O line C00 (GPIO, analog) |
| Chân 62 | PC01 — I/O line C01 (GPIO, analog) |
| Chân 63 | PC02 — I/O line C02 (GPIO, analog) |
| Chân 64 | PC03 — I/O line C03 (GPIO, analog) |
| Chân 65 | VDDCORE — Core voltage output (LDO) |
| Chân 66 | GND — Ground |
| Chân 67 | VDDIN — Main voltage regulator input |
| Chân 68 | PC04 — I/O line C04 (GPIO, analog) |
| Chân 69 | PC05 — I/O line C05 (GPIO, analog) |
| Chân 70 | PC06 — I/O line C06 (GPIO, analog) |
| Chân 71 | PC07 — I/O line C07 (GPIO, analog) |
| Chân 72 | PC08 — SERCOM6/PAD0 or GPIO |
| Chân 73 | PC09 — SERCOM6/PAD1 or GPIO |
| Chân 74 | PC10 — SERCOM6/PAD2 or GPIO |
| Chân 75 | PC11 — SERCOM6/PAD3 or GPIO |
| Chân 76 | PC12 — SERCOM7/PAD0 or GPIO |
| Chân 77 | PC13 — SERCOM7/PAD1 or GPIO |
| Chân 78 | PC14 — SERCOM7/PAD2 or GPIO |
| Chân 79 | PC15 — SERCOM7/PAD3 or GPIO |
| Chân 80 | GND — Ground |
| Chân 81 | PC16 — I/O line C16 (GPIO, analog) |
| Chân 82 | PC17 — I/O line C17 (GPIO, analog) |
| Chân 83 | PC18 — I/O line C18 (GPIO, analog) |
| Chân 84 | PC19 — I/O line C19 (GPIO, analog) |
| Chân 85 | PC20 — I/O line C20 (GPIO, analog) |
| Chân 86 | PC21 — I/O line C21 (GPIO, analog) |
| Chân 87 | PC22 — I/O line C22 (GPIO, analog) |
| Chân 88 | PC23 — I/O line C23 (GPIO, analog) |
| Chân 89 | PD00 — I/O line D00 (GPIO, analog) |
| Chân 90 | PD01 — I/O line D01 (GPIO, analog) |
| Chân 91 | PD02 — I/O line D02 (GPIO, analog) |
| Chân 92 | PD03 — I/O line D03 (GPIO, analog) |
| Chân 93 | PD04 — I/O line D04 (GPIO, analog) |
| Chân 94 | PD05 — I/O line D05 (GPIO, analog) |
| Chân 95 | PD06 — I/O line D06 (GPIO, analog) |
| Chân 96 | PD07 — I/O line D07 (GPIO, analog) |
| Chân 97 | PD08 — I/O line D08 (GPIO, analog) |
| Chân 98 | PD09 — I/O line D09 (GPIO, analog) |
| Chân 99 | RESET_N — Active-low reset input |
| Chân 100 | VDDIO — Digital I/O supply voltage |
Ứng dụng tiêu biểu
ATSAMD51N19A-AF phù hợp cho 6 Áp dụngs: Industrial Control (PLC I/O Modules, Motor Drives), IoT Edge Nodes with TLS Acceleration, USB Peripherals (HID, CDC, Composite), Human-Machine Interfaces (HMI) with TFT Touch, Audio Processing with On-Chip DAC, Portable Instrumentation and Data Loggers.
Industrial Control (PLC I/O Modules, Motor Drives)
The ATSAMD51N19A-AF fits industrial PLC and motor-drive applications thanks to its 120 MHz Cortex-M4F core, hardware FPU for field-oriented control, and 192 KB SRAM for control-loop buffers. Its six SERCOM modules can drive UART to operator panels, SPI to gate drivers, and I2C to sensor chains simultaneously. The 12-bit 1 MSPS ADC samples current and voltage feedback accurately, while dual 12-bit DACs generate analog reference signals. Extended -40C to +125C temperature range tolerates factory-floor thermal stress. The integrated crypto engine supports signed firmware for functional-safety designs.
Được đề xuất
IoT Edge Nodes with TLS Acceleration
The ATSAMD51N19A-AF suits secure IoT edge nodes because the on-chip crypto engine accelerates AES-128/256 and SHA-2, offloading TLS handshakes from the CPU. The USB 2.0 Full-Speed interface enables direct tethering to gateways, while SERCOM ports interface LoRa, Wi-Fi, or BLE modules. 192 KB SRAM hosts TLS session buffers and MQTT payload queues without external memory. The dual-panel Flash supports secure over-the-air firmware updates. Operating from 1.62V to 3.6V permits direct Li-ion battery connection.
Được đề xuất
USB Peripherals (HID, CDC, Composite)
The ATSAMD51N19A-AF is ideal for USB peripherals due to its integrated USB 2.0 Full-Speed controller with on-chip transceiver. The Microchip ASF and MPLAB Harmony stacks provide ready-to-use HID, CDC, MSD, and composite class drivers. Cortex-M4F at 120 MHz handles protocol stack and application logic without external MCU support. 512 KB Flash stores composite descriptor tables plus application code. The 100-pin TQFP gives ample I/O for buttons, LEDs, and downstream SPI peripherals in human-interface devices.
Được đề xuất
Human-Machine Interfaces (HMI) with TFT Touch
The ATSAMD51N19A-AF drives TFT-LCD HMI panels with its high-speed SERCOM channels connecting to SPI-based display controllers. The Cortex-M4F core renders graphics via lightweight LVGL or emWin stacks in 192 KB SRAM. 12-bit ADC reads resistive touch coordinates accurately. The crypto engine secures HMI passwords and operator credentials. Extended temperature range supports outdoor kiosk and industrial panel deployments. Multiple TC channels generate PWM backlight dimming and buzzer tones.
Được đề xuất
Audio Processing with On-Chip DAC
The ATSAMD51N19A-AF delivers up to 16-bit audio quality through its dual 12-bit DACs at 1 MSPS, sufficient for voice prompts, alert tones, and simple waveform synthesis. Cortex-M4F DSP extensions accelerate FFT and biquad filtering in real time. SERCOM channels drive external I2S codecs for higher-fidelity paths. 192 KB SRAM buffers multi-second audio chunks without external memory. The USB Full-Speed interface streams 16 kHz audio to host PCs.
Được đề xuất
Portable Instrumentation and Data Loggers
The ATSAMD51N19A-AF fits portable instruments because its Cortex-M4F core processes sensor data, the 12-bit ADC digitizes multiple channels at 1 MSPS, and 192 KB SRAM stores acquisition buffers. USB Full-Speed enables real-time data streaming to a host PC. The 1.62V-3.6V supply range supports direct Li-ion battery operation with no external LDO. The crypto engine secures proprietary measurement data on removable media via SD-card interface.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD51N19A-AF — 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 | ATSAMD51N19A-AFT | ATSAMD51J20A-MF | ATSAMD51J19A-MF | ATSAMD51J18A-AU | ATSAMD51G19A-MFT |
|---|---|---|---|---|---|---|
| Package | TQFP-100 (14x14 mm) | TQFP-100 (14x14 mm) - same | LQFP-100 - same footprint family | QFN-64 (not pin-compatible) | LQFP-100 - same footprint family | QFN-48 (not pin-compatible) |
| 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 | 1024 KB | 512 KB | 256 KB | 512 KB |
| SRAM | 192 KB | 192 KB | 256 KB | 192 KB | 128 KB | 192 KB |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +125C |
| USB | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed |
| Crypto Engine | AES, SHA, TRNG | AES, SHA, TRNG | AES, SHA, TRNG | AES, SHA, TRNG | AES, SHA, TRNG | AES, SHA, TRNG |
Bảo phân biệt quan trọng
- Highest memory density in TQFP-100 SAM D51 family at 512 KB Flash + 192 KB SRAM (vsATSAMD51J18A-AU)
- Extended -40C to +125C industrial temperature range (vsATSAMD51J18A-AU)
- Tray packaging optimized for prototyping and low-volume assembly (vsATSAMD51N19A-AFT)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor within 2 mm of every VDDIO and VDDIN pin, plus one bulk 4.7 uF ceramic near the package. The internal LDO that generates VDDCORE requires a 1 uF low-ESR output cap on the VDDCORE pin. Routing the analog supply AVVDD through a ferrite bead from VDDIN isolates ADC noise; failure to do this can couple switching noise into ADC measurements and reduce effective ENOB.
The TQFP-100 package has a theta_JA around 50 C/W on a standard 4-layer JEDEC test board. At full CPU load running 120 MHz with all peripherals active, typical dissipation is around 200 mW, yielding a 10C rise above ambient. For industrial -40C to +125C operation, ensure ambient does not push junction above 125C. Wide copper pours beneath exposed pads and on inner layers reduce theta_JA to around 30 C/W.
The ATSAMD51N19A-AF pinout follows the SAM D51 family convention with PAxx/ PBxx/ PCxx/ PDxx ports grouped together and SERCOM alternate functions color-mapped in the datasheet. Maintain continuous ground plane under the MCU to provide low-impedance return paths for SERCOM and USB signals. Route USB DP/DM as a 90 ohm differential pair with length matching within 2 mm. Place the 32.768 kHz crystal within 5 mm of the XIN32/XOUT32 pins to minimize parasitic capacitance.
Do not skip configuring the NVMCTRL peripheral to enable dual-panel Flash and ECC; if left at default single-panel mode, write performance is reduced and ECC errors trigger unwanted NMI. To use USB, the VBUS pin must see 5V through a 10k pull-up divider, and the UDIV clock must be sourced from DFLL or PLL - not from the untrimmed 48 MHz RC. The crypto engine requires the ICache and DMA to be enabled to reach its AES throughput targets.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - for automotive ASIL designs, contact Microchip about ATSAME54/ATSAMV71 AEC-Q100 variants. MSL-3 moisture sensitivity level per JEDEC J-STD-020.
