ATSAME51N19A-AU - 120MHz Cortex-M4F MCU, 512KB Flash | Microchip
N.º da peça: ATSAME51N19A-AU ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $7.77 | $7,77 |
| 10 | $6.94 | $69,40 |
| 100 | $6.21 | $621,00 |
| 500 | $5.55 | $2.775,00 |
| 1.000 | $4.98 | $4.980,00 |
ATSAME51N19A-AU Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash for code, SRAM for data), and a rich set of peripherals (timers, ADC/DAC, communication interfaces, GPIOs). MCUs sit within the embedded computing hierarchy: MCU -> embedded processor -> semiconductor IC. The Cortex-M4F core specifically adds a single-precision Floating Point Unit and DSP extensions, making it well-suited for signal processing and motor control. The ATSAME51N19A-AU uses the ARM Cortex-M4F architecture, the industry-standard 32-bit core for high-performance embedded designs.
Key features include 120 MHz CPU clock, 512 KB Flash with ECC, 192 KB SRAM, a high-speed 16-bit ADC, USB 2.0 full-speed with on-chip transceiver, multiple CAN-FD interfaces, SERCOM serial interfaces configurable as UART/SPI/I2C, and a cryptographic accelerator for AES, SHA, and True Random Number Generator (TRNG). The device also provides up to 6 SERCOM channels, a 12-bit DAC, and a touch controller. Memory protection unit (MPU) and TrustZone-M support enable secure firmware execution.
Typical applications include industrial control systems, building automation, smart energy metering, motor control, USB peripherals, IoT edge nodes, and human-machine interface (HMI) panels. The combination of high-speed ADC, FPU-based DSP capability, and CAN-FD interfaces suits it for real-time control loops in industrial automation, where deterministic response and signal fidelity matter.
Design consideration: When migrating firmware between SAM D51 and SAM E51, verify that the E51's clock-gating and SERCOM channel count match your pin assignments. Use MPLAB X IDE with the SAME51 Device Family Pack and configure the GCLK generator carefully when sharing peripherals across SERCOM and the ADC to avoid bandwidth conflicts.
This page consolidates distributor pricing, drop-in alternative cross-references, and practical design guidance for the ATSAME51N19A-AU that go beyond the bare datasheet excerpt.
Alternativas drop-in para ATSAME51N19A-AU — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATSAME51N19A-AU (mesmo formato e footprint) — diferindo em ADC, SRAM, Operating Temperature, DAC, MSL Level.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAME51N19A-AUT
✅ Drop-In✓ Em estoque
$4.85 / unidade
Ver ficha técnica →ATSAMD51N19A-AF
✅ Drop-In✓ Em estoque
$5.41 / unidade
Ver ficha técnica →ATSAMD51P19A-AU
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAME54N20A-AU
✅ Drop-In✓ Em estoque
$8.75 / unidade
Ver ficha técnica →ATSAME51J20A-AUT-EFP
✅ Drop-In✓ Em estoque
$5.42 / unidade
Ver ficha técnica →ATSAMD51J19A-AFT
✅ Drop-In✓ Em estoque
$4.8 / unidade
Ver ficha técnica →ATSAME51N19A-AU Classificações máximas e características elétricas
| Core Architecture | ARM Cortex-M4F with FPU |
| Frequência máxima de clock | 120 MHz |
| Program Memory (Flash) | 512 KB with ECC |
| SRAM | 192 KB |
| Encapsulamento | 100-pin TQFP (14x14 mm) |
| Operating Temperature Grade | -40°C to +85°C (industrial) |
| Operating Voltage Range | 1.71 V to 3.6 V |
| ADC | Up to 2x 12-bit, 1 MSPS |
| DAC | 12-bit, 1 MSPS |
| USB | USB 2.0 Full-Speed, on-chip transceiver |
| CAN | CAN-FD |
| SERCOM Channels | Up to 8 (UART/SPI/I2C configurable) |
| Cryptographic Accelerator | AES, SHA, TRNG |
| TrustZone-M | Supported |
| DMA Channels | 32 |
| Status RoHS | Compliant |
Configuração de pinos do ATSAME51N19A-AU
| Pino 1 | PD0 — GPIO / SERCOM3 pad 0 |
| Pino 2 | PD1 — GPIO / SERCOM3 pad 1 |
| Pino 3 | PD2 — GPIO / SERCOM3 pad 2 |
| Pino 4 | PD3 — GPIO / SERCOM3 pad 3 |
| Pino 5 | VDDIO — Digital I/O supply voltage |
| Pino 6 | GND — Ground |
| Pino 7 | PD4 — GPIO / SERCOM3 pad 0 alt |
| Pino 8 | PD5 — GPIO / SERCOM3 pad 1 alt |
| Pino 9 | PD6 — GPIO / SERCOM3 pad 2 alt |
| Pino 10 | PD7 — GPIO / SERCOM3 pad 3 alt |
| Pino 11 | PD8 — GPIO / SERCOM4 pad 0 |
| Pino 12 | PD9 — GPIO / SERCOM4 pad 1 |
| Pino 13 | PD10 — GPIO / SERCOM4 pad 2 |
| Pino 14 | PD11 — GPIO / SERCOM4 pad 3 |
| Pino 15 | PD12 — GPIO / SERCOM5 pad 0 |
| Pino 16 | PD13 — GPIO / SERCOM5 pad 1 |
| Pino 17 | PA0 — GPIO / SERCOM0 pad 0 |
| Pino 18 | PA1 — GPIO / SERCOM0 pad 1 |
| Pino 19 | PA2 — GPIO / SERCOM0 pad 2 |
| Pino 20 | PA3 — GPIO / SERCOM0 pad 3 |
| Pino 21 | PA4 — GPIO / SERCOM0 pad 0 alt |
| Pino 22 | PA5 — GPIO / SERCOM0 pad 1 alt |
| Pino 23 | PA6 — GPIO / SERCOM0 pad 2 alt |
| Pino 24 | PA7 — GPIO / SERCOM0 pad 3 alt |
| Pino 25 | PA8 — GPIO / SERCOM1 pad 0 |
| Pino 26 | PA9 — GPIO / SERCOM1 pad 1 |
| Pino 27 | PA10 — GPIO / SERCOM1 pad 2 |
| Pino 28 | PA11 — GPIO / SERCOM1 pad 3 |
| Pino 29 | PA12 — GPIO / SERCOM2 pad 0 |
| Pino 30 | PA13 — GPIO / SERCOM2 pad 1 |
| Pino 31 | PA14 — GPIO / SERCOM2 pad 2 |
| Pino 32 | PA15 — GPIO / SERCOM2 pad 3 |
| Pino 33 | PA16 — GPIO / SERCOM5 pad 0 alt |
| Pino 34 | PA17 — GPIO / SERCOM5 pad 1 alt |
| Pino 35 | PA18 — GPIO / SERCOM1 pad 0 alt |
| Pino 36 | PA19 — GPIO / SERCOM1 pad 1 alt |
| Pino 37 | PA20 — GPIO / SERCOM5 pad 2 alt |
| Pino 38 | PA21 — GPIO / SERCOM5 pad 3 alt |
| Pino 39 | PA22 — GPIO / SERCOM3 pad 0 alt |
| Pino 40 | PA23 — GPIO / SERCOM3 pad 1 alt |
| Pino 41 | PA24 — GPIO / SERCOM3 pad 2 alt |
| Pino 42 | PA25 — GPIO / SERCOM3 pad 3 alt |
| Pino 43 | GND — Ground |
| Pino 44 | VDDIO — Digital I/O supply voltage |
| Pino 45 | PB0 — GPIO / SERCOM5 pad 0 |
| Pino 46 | PB1 — GPIO / SERCOM5 pad 1 |
| Pino 47 | PB2 — GPIO / SERCOM5 pad 2 |
| Pino 48 | PB3 — GPIO / SERCOM5 pad 3 |
| Pino 49 | PB4 — GPIO / SERCOM4 pad 0 |
| Pino 50 | PB5 — GPIO / SERCOM4 pad 1 |
| Pino 51 | PB6 — GPIO / SERCOM4 pad 2 |
| Pino 52 | PB7 — GPIO / SERCOM4 pad 3 |
| Pino 53 | PB8 — GPIO / SERCOM0 pad 0 alt |
| Pino 54 | PB9 — GPIO / SERCOM0 pad 1 alt |
| Pino 55 | PB10 — GPIO / SERCOM0 pad 2 alt |
| Pino 56 | PB11 — GPIO / SERCOM0 pad 3 alt |
| Pino 57 | PB12 — GPIO / SERCOM2 pad 0 alt |
| Pino 58 | PB13 — GPIO / SERCOM2 pad 1 alt |
| Pino 59 | PB14 — GPIO / SERCOM2 pad 2 alt |
| Pino 60 | PB15 — GPIO / SERCOM2 pad 3 alt |
| Pino 61 | PB16 — GPIO / SERCOM4 pad 0 alt |
| Pino 62 | PB17 — GPIO / SERCOM4 pad 1 alt |
| Pino 63 | PB18 — GPIO / SERCOM4 pad 2 alt |
| Pino 64 | PB19 — GPIO / SERCOM4 pad 3 alt |
| Pino 65 | PB20 — GPIO / SERCOM5 pad 0 alt |
| Pino 66 | PB21 — GPIO / SERCOM5 pad 1 alt |
| Pino 67 | PB22 — GPIO / SERCOM1 pad 0 alt |
| Pino 68 | PB23 — GPIO / SERCOM1 pad 1 alt |
| Pino 69 | PB24 — GPIO / SERCOM1 pad 2 alt |
| Pino 70 | PB25 — GPIO / SERCOM1 pad 3 alt |
| Pino 71 | PB26 — GPIO / SERCOM2 pad 0 alt |
| Pino 72 | PB27 — GPIO / SERCOM2 pad 1 alt |
| Pino 73 | PB28 — GPIO / SERCOM2 pad 2 alt |
| Pino 74 | PB29 — GPIO / SERCOM2 pad 3 alt |
| Pino 75 | PB30 — GPIO / SERCOM5 pad 2 alt |
| Pino 76 | PB31 — GPIO / SERCOM5 pad 3 alt |
| Pino 77 | PC0 — GPIO / SERCOM6 pad 0 |
| Pino 78 | PC1 — GPIO / SERCOM6 pad 1 |
| Pino 79 | PC2 — GPIO / SERCOM6 pad 2 |
| Pino 80 | PC3 — GPIO / SERCOM6 pad 3 |
| Pino 81 | PC4 — GPIO / SERCOM7 pad 0 |
| Pino 82 | PC5 — GPIO / SERCOM7 pad 1 |
| Pino 83 | PC6 — GPIO / SERCOM7 pad 2 |
| Pino 84 | PC7 — GPIO / SERCOM7 pad 3 |
| Pino 85 | VDDIN — Voltage regulator input supply |
| Pino 86 | GND — Ground |
| Pino 87 | PC8 — GPIO / SERCOM6 pad 0 alt |
| Pino 88 | PC9 — GPIO / SERCOM6 pad 1 alt |
| Pino 89 | PC10 — GPIO / SERCOM6 pad 2 alt |
| Pino 90 | PC11 — GPIO / SERCOM6 pad 3 alt |
| Pino 91 | PC12 — GPIO / SERCOM7 pad 0 alt |
| Pino 92 | PC13 — GPIO / SERCOM7 pad 1 alt |
| Pino 93 | PC14 — GPIO / SERCOM7 pad 2 alt |
| Pino 94 | PC15 — GPIO / SERCOM7 pad 3 alt |
| Pino 95 | PC16 — GPIO / SERCOM0 pad 0 alt |
| Pino 96 | PC17 — GPIO / SERCOM0 pad 1 alt |
| Pino 97 | PC18 — GPIO / SERCOM0 pad 2 alt |
| Pino 98 | PC19 — GPIO / SERCOM0 pad 3 alt |
| Pino 99 | RESET_N — Reset input (active low) |
| Pino 100 | GND — Ground |
Aplicações típicas
ATSAME51N19A-AU é adequado para 6 aplicaçãos: Industrial Motor Control, Building Automation and HVAC Controllers, Smart Energy Metering, USB Industrial Peripherals, IoT Edge Sensor Nodes, Human-Machine Interface (HMI) Panels.
Industrial Motor Control
The ATSAME51N19A-AU's ARM Cortex-M4F core with single-precision FPU executes field-oriented control (FOC) loops in real time at 120 MHz, while its 12-bit 1 MSPS ADC samples phase currents with sufficient resolution for sinusoidal commutation. Up to 8 SERCOM channels allow simultaneous SPI encoder feedback and UART communication with a controller. Hardware floating-point multiplications and PWM-synchronized ADC triggering via the TCC timer counter-event system yield deterministic sub-1 µs control loop periods, suitable for PMSM, BLDC, and stepper drives up to several kW. The industrial temperature grade (-40°C to +85°C) and ECC Flash make the E51 deployable in factory-floor cabinets without reliability concerns.
Recomendado
Building Automation and HVAC Controllers
Building automation gateways require deterministic CAN-FD bus handling for BACnet/Modbus traffic, real-time sensor scanning, and secure firmware updates. The ATSAME51N19A-AU integrates a CAN-FD controller and USB 2.0 Full-Speed with on-chip transceiver for direct host connectivity without external PHY. The TrustZone-M isolation allows secure OTA firmware validation via the AES-256/SHA-256/TRNG crypto block while keeping application logic in a non-secure memory partition. The 100-pin TQFP provides ample GPIO for relay drivers, 0-10 V analog outputs, and multiple UARTs for RS-485 sensor networks. Industrial-grade temperature operation ensures reliability in unconditioned electrical closets and rooftop HVAC enclosures.
Recomendado
Smart Energy Metering
Single-phase and poly-phase energy meters demand high-accuracy ADC sampling at 4 kSPS per channel with simultaneous computation of RMS voltage, current, and active/reactive power. The ATSAME51N19A-AU's 12-bit ADC paired with the Cortex-M4F DSP extensions (single-cycle MAC, SIMD) executes per-sample power calculations inside the ADC interrupt service routine without CPU saturation. Hardware AES-128 encryption of tariff data, cryptographic signing of meter readings, and TRNG-seeded key generation protect against tampering. The 512 KB dual-panel Flash supports concurrent firmware updates mandated by smart-grid regulations, while the ECC Flash detects bit errors caused by electrical noise on the meter bus.
Recomendado
USB Industrial Peripherals
USB Human Interface Devices (HID), data-acquisition interfaces, and industrial input panels benefit from the ATSAME51N19A-AU's integrated USB 2.0 Full-Speed PHY that eliminates external transceiver cost. The 120 MHz Cortex-M4F core handles HID report generation, ADC streaming at 1 MSPS, and DMA-driven bulk transfers without CPU intervention via 32 DMA channels. The 8 SERCOM interfaces allow simultaneous connections to multiple UART sensors (RS-232/RS-485), SPI displays, and I2C peripherals. The USB bootloader in ROM supports field firmware updates over the same USB port, and the TrustZone-M isolation can protect device authentication keys from firmware compromise.
Recomendado
IoT Edge Sensor Nodes
Industrial IoT gateways aggregating sensor data over LoRa, sub-GHz wireless, or Wi-Fi modules require sufficient processing for edge analytics, secure key storage, and reliable connectivity stacks. The ATSAME51N19A-AU runs MQTT-SN or CoAP stacks in addition to encryption (AES) and authentication (SHA-256) in the cryptographic accelerator, freeing the CPU from crypto overhead. 192 KB SRAM accommodates TLS 1.2/1.3 handshakes for secure cloud connectivity, while the dual-panel 512 KB Flash supports A/B firmware partitions for OTA updates. The 100-pin TQFP package and 1.71-3.6 V supply voltage allow direct battery or solar-power operation in remote deployments.
Recomendado
Human-Machine Interface (HMI) Panels
Industrial HMI panels integrate touch displays, RGB interfaces, and multiple serial peripherals while running real-time graphics. The ATSAME51N19A-AU's SERCOM channels connect to SPI displays, I2C touch controllers, and UART sensor ports simultaneously. The Cortex-M4F FPU accelerates JPEG decoding and graphics rendering, while the 192 KB SRAM accommodates framebuffers for small color TFTs. The 12-bit DAC drives audio alerts, and the TCC timers generate backlight PWM with phase-shifted outputs for LED matrix dimming. TrustZone-M protects the UI firmware from unauthorized modification, and the industrial temperature grade supports panel-mount deployments near heat-generating equipment.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAME51N19A-AU — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAME51N19A-AUT | ATSAMD51N19A-AF | ATSAMD51P19A-AU | ATSAME54N20A-AU | ATSAME51J20A-AUT-EFP |
|---|---|---|---|---|---|---|
| Package | 100-pin TQFP (14x14) | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F |
| Max Clock Speed | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash | 512 KB | 512 KB | 512 KB | 512 KB | 1 MB | 1 MB |
| SRAM | 192 KB | 192 KB | 192 KB | 192 KB | 256 KB | 256 KB |
| Cryptographic Accelerator | Yes (AES/SHA/TRNG) | Yes (AES/SHA/TRNG) | No | No | Yes (AES/SHA/TRNG) | Yes (AES/SHA/TRNG) |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
| Supply Voltage | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V |
Principais diferenciais
- Integrated cryptographic accelerator for industrial security (vs ATSAMD51P19A-AU)
- Dual-panel Flash with ECC for live firmware updates (vs ATSAMD51J19A-AFT)
- CAN-FD controller for industrial fieldbus (vs ATSAME51J18A-AF)
Notas de projeto
The ATSAME51N19A-AU requires a 1.71-3.6 V supply on VDDIN with a separate VDDIO domain for I/O. Decouple both rails with 100 nF ceramic capacitors placed within 5 mm of each supply pin, plus a 4.7 µF bulk capacitor per rail. The on-chip voltage regulator requires an external 1 µF capacitor on the VDDOUT pin for core stability. In USB applications, the VDDIO must be at 3.3 V for USB Full-Speed signal compliance per the USB 2.0 specification. Power-rail sequencing (VDDIN before VDDIO) is recommended to avoid latch-up; consult the SAME51 datasheet DS60001506 for full power-rail sequencing diagrams.
The 100-pin TQFP package has a thermal resistance θJA of approximately 31 °C/W (still-air, JEDEC 4-layer PCB). At maximum CPU activity (120 MHz, all peripherals active), the E51 consumes roughly 100 mW, resulting in a junction-temperature rise of about 3 °C above ambient - well within the 85 °C industrial limit. For designs operating at +85 °C ambient with minimal airflow, however, headroom drops to zero. Add a thermal copper pour under the exposed pad (TQFP-100 has no exposed pad; use copper-filled GND pour instead) and avoid placing heat-generating components directly above the MCU. Derating 20% of maximum CPU activity is recommended for high-ambient industrial deployments.
Route the 50 MHz external crystal traces (XIN/XOUT) as short as possible (under 10 mm) with a ground guard trace on each side to prevent crosstalk into the ADC inputs. Place the 12 pF crystal load capacitors within 3 mm of the XIN/XOUT pins. For the USB DP/DM differential pair, maintain 90 Ω differential impedance with matched trace lengths (within 2 mm) and keep the pair clear of noisy traces (PWM, switching regulator). All SERCOM signals can be remapped to alternate pads via the I/O multiplexing controller; use the Atmel START pin mux tool to verify pin assignment conflicts before PCB layout freeze.
Estimated: programming firmware to the ATSAME51N19A-AU without setting the GCLK_CONFIG and SUPC.VREF settings correctly can cause the PLL to fail lock at 120 MHz - always boot from the 12 MHz internal oscillator and let the DFLL lock first before switching to PLL. A common pitfall is configuring the SERCOM baud rate generator without accounting for the SERCOM GCLK source - the SERCOM clock must be at least 2x the desired baud rate. Also, when migrating from SAM D51 to SAM E51 firmware, verify that crypto-related PORT mappings do not conflict with the application-defined GPIO layout, as the E51 has additional SERCOM/IOC pins not present on the D51. TrustZone-M secure attribute configuration errors will silently break interrupt vector routing - always verify in the SAME51 device family pack examples.
Informações de conformidade
RoHS and REACH compliance per Microchip product page. AEC-Q100 not applicable - this is an industrial-grade part (-40°C to +85°C); for automotive AEC-Q100 qualified parts see SAM E51J variants. Lead-free and matte-tin finish per Microchip manufacturing standards.
