ATSAME51J19A-AUT - 120MHz Cortex-M4F MCU, 512KB Flash | Microchip
N.º de pieza: ATSAME51J19A-AUT ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $11.38 | $11,38 |
| 10 | $10.24 | $102,40 |
| 100 | $9.1 | $910,00 |
| 500 | $7.95 | $3.975,00 |
| 1.000 | $6.85 | $6.850,00 |
ATSAME51J19A-AUT Descripción general
A Cortex-M4F microcontroller is a 32-bit ARM processor core augmented by a hardware FPU and DSP extensions, optimized for deterministic real-time control and signal processing. The SAM E51 family sits in Microchip's mid-performance MCU tier above the SAMD51 and shares the Cortex-M4F ISA, enabling straightforward firmware migration. The part belongs to the broader product hierarchy: ARM Cortex-M4F MCU -> 32-bit microcontroller -> embedded microcontroller -> integrated circuit -> semiconductor.
Key features of the ATSAME51J19A-AUT include 120 MHz core clock with FPU, 512 KB dual-panel Flash for read-while-write firmware update support, 256 KB SRAM, a 12-bit 1 MSPS ADC, 12-bit DAC, up to six SERCOM modules for UART/SPI/I2C, one CAN-FD controller, full-speed USB with embedded PHY, and an Event System for low-latency inter-peripheral signaling. The TQFP-64 footprint provides generous I/O for mixed-signal designs.
The architecture pairs the Cortex-M4F core with a 5-stage pipeline, single-cycle MAC, and single-precision IEEE-754 FPU, delivering 1.61 CoreMark/MHz efficiency. Hardware accelerators such as the Peripheral Touch Controller and the I2S interface are integrated, reducing BOM cost. The dual-panel Flash allows one bank to execute code while the other is being reprogrammed, supporting OTA firmware updates without external memory.
Typical applications include industrial IoT gateways, CAN-FD connected sensor hubs, USB-C audio interfaces, building automation controllers, and HMI touch panels. The combination of floating-point DSP performance, USB, and CAN-FD makes the part a strong fit for industrial connectivity nodes that aggregate sensor data and present it to a host controller.
When designing with this MCU, allocate the 64-pin budget carefully: SERCOMs are highly multiplexed, so pin mapping must be finalized before PCB layout. Use the Atmel Studio 7 / MPLAB X IDE with ASF or Harmony 3 frameworks for peripheral configuration and code generation.
This page synthesizes distributor pricing, drop-in SAM E51 / SAMD51 alternatives, and application guidance not found in a single datasheet source, helping engineers select and source the right variant faster.
Alternativas directas para ATSAME51J19A-AUT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATSAME51J19A-AUT (mismo factor de forma y huella) — difiere en ADC, SRAM, Operating Voltage, Core, Flash Memory.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATSAME51J19A-AFT
✅ Sustitución directa✓ En stock
$5.62 / unidad
Ver hoja de datos →ATSAME51J18A-AUT
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$4.65 / unidad
Ver hoja de datos →ATSAMD51J19A-AUT-EFP
✅ Sustitución directa✓ En stock
$4.45 / unidad
Ver hoja de datos →ATSAMD51J20A-AUT-EFP
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$7.8 / unidad
Ver hoja de datos →ATSAME51J19A-AUT-EFP
✅ Sustitución directa✓ En stock
$6.45 / unidad
Ver hoja de datos →ATSAME51J19A-AUT Valores máximos y características eléctricas
| Core Architecture | ARM Cortex-M4F with FPU |
| CPU Frequency | 120 MHz |
| Program Memory (Flash) | 512 KB |
| SRAM | 256 KB |
| Operating Voltage | 3.3 V typical (1.62 V to 3.63 V) |
| Encapsulado | 64-pin TQFP (10x10 mm) |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40C to +85C (industrial, -AUT suffix) |
| Communication Interfaces | SERCOM (UART/SPI/I2C), CAN-FD, USB 2.0 Full-Speed |
| Estado RoHS | Compliant |
| Lead Free | Yes |
| Flash Bank Architecture | Dual-panel (read-while-write) |
Configuración de pines de ATSAME51J19A-AUT
| Pin 1 | PA00 — I/O - SERCOM/I2C |
| Pin 2 | PA01 — I/O - SERCOM/I2C |
| Pin 3 | PA02 — I/O - SERCOM, ADC |
| Pin 4 | PA03 — I/O - SERCOM, ADC, REF |
| Pin 5 | PA04 — I/O - SERCOM, VBUS |
| Pin 6 | PA05 — I/O - SERCOM |
| Pin 7 | PA06 — I/O - SERCOM |
| Pin 8 | PA07 — I/O - SERCOM |
| Pin 9 | VDD — Power 1.62 V to 3.63 V |
| Pin 10 | VSS — Ground |
| Pin 11 | PB08 — I/O - SERCOM, ADC |
| Pin 12 | PB09 — I/O - SERCOM, ADC |
| Pin 13 | PB10 — I/O - SERCOM |
| Pin 14 | PB11 — I/O - SERCOM |
| Pin 15 | PB12 — I/O - SERCOM |
| Pin 16 | PB13 — I/O - SERCOM |
| Pin 17 | PB14 — I/O - SERCOM |
| Pin 18 | PB15 — I/O - SERCOM |
| Pin 19 | PC00 — I/O |
| Pin 20 | PC01 — I/O |
| Pin 21 | PC02 — I/O |
| Pin 22 | PC03 — I/O - SERCOM, USB |
| Pin 23 | PC04 — I/O - SERCOM |
| Pin 24 | PC05 — I/O - SERCOM |
| Pin 25 | PC06 — I/O - SERCOM |
| Pin 26 | PC07 — I/O - SERCOM |
| Pin 27 | VSS — Ground |
| Pin 28 | VDD — Power |
| Pin 29 | PC08 — I/O |
| Pin 30 | PC09 — I/O |
| Pin 31 | PC10 — I/O |
| Pin 32 | PC11 — I/O |
| Pin 33 | PC12 — I/O |
| Pin 34 | PC13 — I/O |
| Pin 35 | PC14 — I/O |
| Pin 36 | PC15 — I/O |
| Pin 37 | PD00 — I/O |
| Pin 38 | PD01 — I/O |
| Pin 39 | PD02 — I/O |
| Pin 40 | PD03 — I/O |
| Pin 41 | PD04 — I/O |
| Pin 42 | PD05 — I/O |
| Pin 43 | PD06 — I/O |
| Pin 44 | PD07 — I/O |
| Pin 45 | PD08 — I/O |
| Pin 46 | PD09 — I/O |
| Pin 47 | PD10 — I/O |
| Pin 48 | PD11 — I/O |
| Pin 49 | PD12 — I/O |
| Pin 50 | PD13 — I/O |
| Pin 51 | VSS — Ground |
| Pin 52 | VDD — Power |
| Pin 53 | PB22 — I/O - SERCOM |
| Pin 54 | PB23 — I/O - SERCOM |
| Pin 55 | PA08 — I/O - SERCOM, XOUT |
| Pin 56 | PA09 — I/O - SERCOM, XIN |
| Pin 57 | PA10 — I/O - SERCOM |
| Pin 58 | PA11 — I/O - SERCOM |
| Pin 59 | PA12 — I/O - SERCOM, CAN |
| Pin 60 | PA13 — I/O - SERCOM, CAN |
| Pin 61 | PA14 — I/O - SERCOM |
| Pin 62 | PA15 — I/O - SERCOM |
| Pin 63 | PA16 — I/O - SERCOM |
| Pin 64 | PA17 — I/O - SERCOM |
Aplicaciones típicas
ATSAME51J19A-AUT es adecuado para 6 aplicacións: Industrial IoT Gateway, USB-C Audio Interface, CAN-FD Sensor Hub, Building Automation Controller, HMI Touch Panel Controller, Portable Medical Sensor.
Industrial IoT Gateway
The ATSAME51J19A-AUT is well suited to industrial IoT gateway designs where CAN-FD sensor nodes aggregate and forward telemetry to a host controller over USB. Its Cortex-M4F core running at 120 MHz can handle CAN-FD frame parsing, protocol conversion, and cryptographic pre-processing simultaneously. Engineers typically deploy Harmony 3's TCP/IP or USB CDC stack to expose the gateway as a virtual COM port or MQTT bridge. The 512 KB Flash holds TLS stacks and OTA bootloader images, while 256 KB SRAM accommodates full TCP/IP buffers without external RAM. Compared with a Cortex-M0+ MCU, the FPU accelerates JSON parsing and AES-128 encryption by 5-10x. Place a 16 MHz crystal or use the internal 16 MHz DFLL for system clock; route CAN-FD TX/RX to the integrated CAN module with proper 120 ohm termination.
Recomendado
USB-C Audio Interface
The SAM E51's USB 2.0 Full-Speed device with embedded PHY makes the ATSAME51J19A-AUT a fit for USB-C audio interfaces bridging to a host PC. The Cortex-M4F's DSP instructions accelerate fixed-point audio processing such as biquad filtering and dynamic range compression. With 256 KB SRAM, designers can implement multi-channel audio at 48 kHz / 24-bit without external memory. The integrated 12-bit DAC drives headphone amps for monitoring paths, while an external S/PDIF or I2S codec handles high-fidelity outputs. Firmware typically uses TinyUSB or ASF USB stack with class-compliant audio descriptors. Compared with M0+ MCUs, the M4F delivers roughly 2x cycles per audio sample, easing timing closure.
Recomendado
CAN-FD Sensor Hub
In automotive and industrial sensor hubs, the ATSAME51J19A-AUT aggregates CAN-FD inputs from multiple nodes and publishes them over Ethernet or wireless. The 120 MHz M4F core can poll a CAN-FD bus at 1 Mbit while running a TCP/IP or 6LoWPAN gateway to a cloud uplink. Dual-panel Flash enables fail-safe OTA firmware upgrades - one bank reprograms while the other executes, supporting field maintenance without downtime. The 12-bit ADC reads analog sensor channels, while SERCOMs handle UART peripherals such as GPS or BLE modules. Its industrial -40C to +85C rating suits outdoor enclosures and vehicle cabins.
Recomendado
Building Automation Controller
The ATSAME51J19A-AUT brings Cortex-M4F DSP performance and ample peripherals to BACnet, Modbus, or KNX building automation controllers. With 6 SERCOM channels, the MCU can simultaneously run a Modbus master for HVAC, a UART link to a touch panel, and a SPI display interface. 512 KB Flash stores full BACnet stacks with object dictionary support, while 256 KB SRAM keeps trend logs in memory. The integrated RTC with calendar mode maintains building schedules during mains dips. Compared with older ARM Cortex-M3 designs, the M4F's single-cycle MAC accelerates the AES-128 encryption used in BACnet/SC. Use the integrated PTC for keypad or slider touch interfaces.
Recomendado
HMI Touch Panel Controller
The ATSAME51J19A-AUT drives small HMI touch panels up to 5 inches using SPI or RGB interfaces, with Cortex-M4F cycles to spare for UI rendering and Debounce. The integrated Peripheral Touch Controller (PTC) supports up to 12 self-capacitance or mutual-capacitance electrodes for glass or ITO overlays, eliminating external touch ICs. The 12-bit ADC digitizes analog sensors behind the panel, while SERCOMs connect to RS-485 or Modbus peripherals. Compared with external touch controllers, the integrated PTC reduces BOM cost and PCB area. The 64-pin TQFP exposes enough GPIO for multi-color LED backlight control.
Recomendado
Portable Medical Sensor
The ATSAME51J19A-AUT's industrial temperature range, low-power Sleep modes, and USB connectivity support portable medical peripherals such as pulse oximeters, ECG front-ends, and wearable monitors. The Cortex-M4F DSP instructions accelerate digital filter implementations (FIR, biquad, FFT) that clean ECG and PPG signals in firmware, reducing analog front-end complexity. With 256 KB SRAM and 512 KB Flash, designers can embed reference DSP libraries along with USB class-compliant drivers. Compared with discrete MCU + DSP designs, the SAM E51 reduces BOM cost while keeping latency under 10 ms per sample. The 12-bit ADC at 1 MSPS is well-matched for ECG and PPG analog front-ends.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAME51J19A-AUT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATSAME51J19A-AFT | ATSAME51J18A-AUT | ATSAMD51J19A-AUT | ATSAMD51J20A-AUT | ATSAME51J19A-AUT-EFP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10 mm) | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same |
| 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 | 256 KB (-50%) | 512 KB | 1 MB (+100%) | 512 KB |
| SRAM | 256 KB | 256 KB | 128 KB | 256 KB | 256 KB | 256 KB |
| CAN-FD | Yes | Yes | Yes | No (Ethernet MAC instead) | No | Yes |
| USB 2.0 FS | Yes | Yes | Yes | Yes | Yes | Yes |
Diferenciadores clave
- Dual-panel Flash enables OTA firmware upgrades without downtime (frente a ATSAME51J19A-AFT (same Flash but different temperature grade))
- Same TQFP-64 pinout across SAM E51 / SAMD51 families (frente a ATSAMD51J19A-AUT)
- Industrial temperature rating (-40C to +85C) (frente a ATSAME51J19A-AUT-EFP)
Notas de diseño
Route the ARM trace impedance matched to the 32 kHz XIN/XOUT crystal trace length is critical for USB low-jitter operation; keep traces under 5 mm and shield with a ground pour. Decouple VDD pins individually with 100 nF X7R ceramic capacitors placed within 3 mm of each VDD pin. Bulk 4.7 uF decoupling is recommended at the package's main supply pin.
Supply the SAM E51 from a clean 3.3 V LDO (e.g., MCP1755) to avoid core noise injection. The internal DC-DC converter requires at least 1 uF X7R on its filter pin for stable operation. Avoid shared supplies with switching converters or RF power stages without pi-filter isolation. Estimated: at 120 MHz core + USB active, average IDD ~ 30 mA, so the LDO must be rated above 100 mA.
Do not disable the dual-panel Flash bootloader without enabling the secure SAM-BA stage, or recovery after bad firmware may require SAMC20 debug access. Ensure SERCOM I2C pins have external pull-ups (>= 4.7 kohm) even when using on-chip pull resistors because internal pull strength is too weak for 400 kHz I2C at 3.3 V.
Route USB DP/DM as a 90 ohm differential pair on the same layer with no splits, keeping the pair length matched within 2 mm. The USB reference design uses an external 90-ohm common-mode choke near the connector. For CAN-FD, maintain 120 ohm termination at both ends of the bus and twist the CAN-H/CAN-L pair within the cable harness.
Información de cumplimiento
RoHS compliant per Microchip product page; AEC-Q100 not applicable (automotive grade variants have distinct ordering codes). Refer to manufacturer datasheet for full compliance certificates.
