ATSAMD51N19A-AF - 120MHz Cortex-M4F MCU, 512KB Flash | Microchip
MPN: ATSAMD51N19A-AF ✓ פעילATSAMD51N19A-AF סקירה
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.
חלופות תחליף ישיר עבור ATSAMD51N19A-AF — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ATSAMD51N19A-AF (אותו גורם צורה וטביעת רגל) — שונים ב USB, DAC, Operating Temperature, Package, ADC.
ATSAMD51N19A-AFT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAMD51J20A-MF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAMD51J20A-MFT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAMD51J19A-MF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAMD51J18A-AU-EFP
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAMD51G19A-MFT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAMD51N19A-AF דירוגים מרביים ומאפיינים חשמליים
| 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) |
| מארז | 100-pin TQFP (14x14 mm) |
| Operating Voltage | 1.62 V to 3.6 V |
| טמפרטורת פעולה | -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 |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant |
| רמת MSL | 3 (168 hours) |
תצורת פינים של ATSAMD51N19A-AF
| פין 1 | VDDIO — Digital I/O supply voltage |
| פין 2 | PA00 — I/O line A00 (GPIO, analog) |
| פין 3 | PA01 — I/O line A01 (GPIO, analog) |
| פין 4 | PA02 — I/O line A02 (GPIO, analog) |
| פין 5 | PA03 — I/O line A03 (GPIO, analog) |
| פין 6 | GND — Ground |
| פין 7 | PA04 — I/O line A04 (GPIO, analog) |
| פין 8 | PA05 — I/O line A05 (GPIO, analog) |
| פין 9 | PA06 — I/O line A06 (GPIO, analog) |
| פין 10 | PA07 — I/O line A07 (GPIO, analog) |
| פין 11 | VDDIO — Digital I/O supply voltage |
| פין 12 | PA08 — SERCOM0/PAD0 or GPIO |
| פין 13 | PA09 — SERCOM0/PAD1 or GPIO |
| פין 14 | PA10 — SERCOM0/PAD2 or GPIO |
| פין 15 | PA11 — SERCOM0/PAD3 or GPIO |
| פין 16 | PA12 — SERCOM1/PAD0 or GPIO |
| פין 17 | PA13 — SERCOM1/PAD1 or GPIO |
| פין 18 | PA14 — SERCOM1/PAD2 or GPIO |
| פין 19 | PA15 — SERCOM1/PAD3 or GPIO |
| פין 20 | GND — Ground |
| פין 21 | PA16 — SERCOM2/PAD0 or GPIO |
| פין 22 | PA17 — SERCOM2/PAD1 or GPIO |
| פין 23 | PA18 — SERCOM2/PAD2 or GPIO |
| פין 24 | PA19 — SERCOM2/PAD3 or GPIO |
| פין 25 | PA20 — SERCOM3/PAD0 or GPIO |
| פין 26 | PA21 — SERCOM3/PAD1 or GPIO |
| פין 27 | PA22 — SERCOM3/PAD2 or GPIO |
| פין 28 | PA23 — SERCOM3/PAD3 or GPIO |
| פין 29 | PA24 — USB DP or GPIO |
| פין 30 | PA25 — USB DM or GPIO |
| פין 31 | VDDIO — Digital I/O supply voltage |
| פין 32 | GND — Ground |
| פין 33 | PB00 — I/O line B00 (GPIO, analog) |
| פין 34 | PB01 — I/O line B01 (GPIO, analog) |
| פין 35 | PB02 — SERCOM4/PAD0 or GPIO |
| פין 36 | PB03 — SERCOM4/PAD1 or GPIO |
| פין 37 | PB04 — SERCOM4/PAD2 or GPIO |
| פין 38 | PB05 — SERCOM4/PAD3 or GPIO |
| פין 39 | PB06 — SERCOM5/PAD0 or GPIO |
| פין 40 | PB07 — SERCOM5/PAD1 or GPIO |
| פין 41 | PB08 — SERCOM5/PAD2 or GPIO |
| פין 42 | PB09 — SERCOM5/PAD3 or GPIO |
| פין 43 | GND — Ground |
| פין 44 | PB10 — I/O line B10 (GPIO, analog) |
| פין 45 | PB11 — I/O line B11 (GPIO, analog) |
| פין 46 | PB12 — TC0/WO0 or GPIO |
| פין 47 | PB13 — TC0/WO1 or GPIO |
| פין 48 | PB14 — TC1/WO0 or GPIO |
| פין 49 | PB15 — TC1/WO1 or GPIO |
| פין 50 | PB16 — TC2/WO0 or GPIO |
| פין 51 | PB17 — TC2/WO1 or GPIO |
| פין 52 | VDDIO — Digital I/O supply voltage |
| פין 53 | PB18 — I/O line B18 (GPIO, analog) |
| פין 54 | PB19 — I/O line B19 (GPIO, analog) |
| פין 55 | PB20 — I/O line B20 (GPIO, analog) |
| פין 56 | PB21 — I/O line B21 (GPIO, analog) |
| פין 57 | PB22 — I/O line B22 (GPIO, analog) |
| פין 58 | PB23 — I/O line B23 (GPIO, analog) |
| פין 59 | PB24 — I/O line B24 (GPIO, analog) |
| פין 60 | PB25 — I/O line B25 (GPIO, analog) |
| פין 61 | PC00 — I/O line C00 (GPIO, analog) |
| פין 62 | PC01 — I/O line C01 (GPIO, analog) |
| פין 63 | PC02 — I/O line C02 (GPIO, analog) |
| פין 64 | PC03 — I/O line C03 (GPIO, analog) |
| פין 65 | VDDCORE — Core voltage output (LDO) |
| פין 66 | GND — Ground |
| פין 67 | VDDIN — Main voltage regulator input |
| פין 68 | PC04 — I/O line C04 (GPIO, analog) |
| פין 69 | PC05 — I/O line C05 (GPIO, analog) |
| פין 70 | PC06 — I/O line C06 (GPIO, analog) |
| פין 71 | PC07 — I/O line C07 (GPIO, analog) |
| פין 72 | PC08 — SERCOM6/PAD0 or GPIO |
| פין 73 | PC09 — SERCOM6/PAD1 or GPIO |
| פין 74 | PC10 — SERCOM6/PAD2 or GPIO |
| פין 75 | PC11 — SERCOM6/PAD3 or GPIO |
| פין 76 | PC12 — SERCOM7/PAD0 or GPIO |
| פין 77 | PC13 — SERCOM7/PAD1 or GPIO |
| פין 78 | PC14 — SERCOM7/PAD2 or GPIO |
| פין 79 | PC15 — SERCOM7/PAD3 or GPIO |
| פין 80 | GND — Ground |
| פין 81 | PC16 — I/O line C16 (GPIO, analog) |
| פין 82 | PC17 — I/O line C17 (GPIO, analog) |
| פין 83 | PC18 — I/O line C18 (GPIO, analog) |
| פין 84 | PC19 — I/O line C19 (GPIO, analog) |
| פין 85 | PC20 — I/O line C20 (GPIO, analog) |
| פין 86 | PC21 — I/O line C21 (GPIO, analog) |
| פין 87 | PC22 — I/O line C22 (GPIO, analog) |
| פין 88 | PC23 — I/O line C23 (GPIO, analog) |
| פין 89 | PD00 — I/O line D00 (GPIO, analog) |
| פין 90 | PD01 — I/O line D01 (GPIO, analog) |
| פין 91 | PD02 — I/O line D02 (GPIO, analog) |
| פין 92 | PD03 — I/O line D03 (GPIO, analog) |
| פין 93 | PD04 — I/O line D04 (GPIO, analog) |
| פין 94 | PD05 — I/O line D05 (GPIO, analog) |
| פין 95 | PD06 — I/O line D06 (GPIO, analog) |
| פין 96 | PD07 — I/O line D07 (GPIO, analog) |
| פין 97 | PD08 — I/O line D08 (GPIO, analog) |
| פין 98 | PD09 — I/O line D09 (GPIO, analog) |
| פין 99 | RESET_N — Active-low reset input |
| פין 100 | VDDIO — Digital I/O supply voltage |
יישומים טיפוסיים
ATSAMD51N19A-AF מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ATSAMD51N19A-AF — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Highest memory density in TQFP-100 SAM D51 family at 512 KB Flash + 192 KB SRAM (לעומתATSAMD51J18A-AU)
- Extended -40C to +125C industrial temperature range (לעומתATSAMD51J18A-AU)
- Tray packaging optimized for prototyping and low-volume assembly (לעומתATSAMD51N19A-AFT)
הערות תכנון
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.
מידע על תאימות
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.
