ATSAMD51J19A-AFT - 120MHz Cortex-M4F MCU 512KB Flash | Microchip
Référence : ATSAMD51J19A-AFT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.42 | $8,42 |
| 10 | $7.58 | $75,80 |
| 100 | $6.74 | $674,00 |
| 500 | $6.05 | $3 025,00 |
| 1 000 | $5.42 | $5 420,00 |
| 3 000 | $4.8 | $14 400,00 |
ATSAMD51J19A-AFT Présentation
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.
Alternatives de remplacement direct pour ATSAMD51J19A-AFT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATSAMD51J19A-AFT (même facteur de forme et même empreinte) — différant par DAC, Package, SRAM, Operating Temperature, USB.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAMD51J19A-AUT
✅ Remplacement direct✓ En stock
$4.32 / unité
Voir la fiche technique →ATSAMD51J18A-AUT
✅ Remplacement direct✓ En stock
$4.78 / unité
Voir la fiche technique →ATSAMD51J18A-MU
✅ Remplacement direct✓ En stock
$3.42 / unité
Voir la fiche technique →ATSAMD51J18A-AU-EFP
✅ Remplacement direct✓ En stock
$3.95 / unité
Voir la fiche technique →ATSAMD51J19A-AFT Valeurs maximales et caractéristiques électriques
| 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) |
| Plage de température de fonctionnement | -40 C to +125 C (automotive grade) |
| Boîtier | 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 |
| Type de montage | Surface Mount |
| Niveau MSL | 3 (168 hours) |
| AEC-Q100 | Qualified (automotive grade) |
| Statut RoHS | Compliant |
Configuration des broches de ATSAMD51J19A-AFT
| Broche 1 | PA00 — GPIO/ADC, XIN32 |
| Broche 2 | PA01 — GPIO/ADC, XOUT32 |
| Broche 3 | PA02 — GPIO/AIN0 |
| Broche 4 | PA03 — GPIO/AIN1 |
| Broche 5 | GND — Ground |
| Broche 6 | VDDIO — I/O supply (1.71V-3.63V) |
| Broche 7 | PA04 — GPIO/AIN2 |
| Broche 8 | PA05 — GPIO/AIN3 |
| Broche 9 | PA06 — GPIO/AIN4 |
| Broche 10 | PA07 — GPIO/AIN5 |
| Broche 11 | PA08 — GPIO/AIN6, NMI |
| Broche 12 | PA09 — GPIO/AIN7 |
| Broche 13 | PA10 — GPIO/AIN8 |
| Broche 14 | PA11 — GPIO/AIN9 |
| Broche 15 | VDDIO — I/O supply |
| Broche 16 | GND — Ground |
| Broche 17 | PB10 — GPIO |
| Broche 18 | PB11 — GPIO |
| Broche 19 | PB12 — GPIO |
| Broche 20 | PB13 — GPIO |
| Broche 21 | PB14 — GPIO |
| Broche 22 | PB15 — GPIO |
| Broche 23 | PA12 — GPIO |
| Broche 24 | PA13 — GPIO |
| Broche 25 | PA14 — GPIO |
| Broche 26 | PA15 — GPIO |
| Broche 27 | PA16 — GPIO |
| Broche 28 | PA17 — GPIO |
| Broche 29 | PA18 — GPIO |
| Broche 30 | PA19 — GPIO |
| Broche 31 | PA20 — GPIO |
| Broche 32 | PA21 — GPIO |
| Broche 33 | PA22 — GPIO |
| Broche 34 | PA23 — GPIO |
| Broche 35 | PA24 — GPIO |
| Broche 36 | PA25 — GPIO |
| Broche 37 | GND — Ground |
| Broche 38 | VDDIO — I/O supply |
| Broche 39 | PA26 — GPIO |
| Broche 40 | PA27 — GPIO |
| Broche 41 | PA28 — GPIO |
| Broche 42 | PA29 — GPIO |
| Broche 43 | PA30 — GPIO |
| Broche 44 | PA31 — GPIO |
| Broche 45 | PB16 — GPIO |
| Broche 46 | PB17 — GPIO |
| Broche 47 | PB18 — GPIO |
| Broche 48 | PB19 — GPIO |
| Broche 49 | PB20 — GPIO |
| Broche 50 | PB21 — GPIO |
| Broche 51 | PB22 — GPIO |
| Broche 52 | PB23 — GPIO |
| Broche 53 | PB24 — GPIO |
| Broche 54 | PB25 — GPIO |
| Broche 55 | PB26 — GPIO |
| Broche 56 | PB27 — GPIO |
| Broche 57 | PB28 — GPIO |
| Broche 58 | PB29 — GPIO |
| Broche 59 | PB30 — GPIO |
| Broche 60 | PB31 — GPIO |
| Broche 61 | NRST — Reset (active low) |
| Broche 62 | SWDIO — Serial Wire Debug I/O |
| Broche 63 | SWCLK — Serial Wire Debug Clock |
| Broche 64 | VDDIO — I/O supply |
Applications typiques
ATSAMD51J19A-AFT convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAMD51J19A-AFT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Dual-panel Flash with read-while-write ECC (vs ATSAMD51J18A-AUT)
- AEC-Q100 automotive qualification vs industrial grade (vs ATSAMD51J18A-MU)
- 64-pin TQFP vs 48-pin TQFP for higher GPIO count (vs ATSAMD51G19A-MFT)
Notes de conception
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.
Informations de conformité
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.
