ATSAME51J19A-MF - 120MHz Cortex-M4F MCU, 512KB Flash | Microchip
MPN: ATSAME51J19A-MF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.4 | $6.40 |
| 10 | $5.85 | $58.50 |
| 100 | $5.18 | $518.00 |
| 500 | $4.62 | $2,310.00 |
| 1,000 | $4.05 | $4,050.00 |
ATSAME51J19A-MF Overview
What is a Cortex-M4F microcontroller? An ARM Cortex-M4F microcontroller is a 32-bit embedded processor core with single-precision Floating Point Unit (FPU), hardware single-cycle multiply-accumulate, and optional DSP extensions. It sits in the ARM Cortex-M hierarchy between the M0+ (lowest power, simplest) and M7 (highest performance, with optional double-precision FPU), making it the mainstream choice for motor control, industrial sensing, and connected edge nodes. The SAM E51 line extends the M4F with Microchip's proprietary peripherals, dual-panel Flash for live update, and a 5V-tolerant I/O structure that simplifies industrial interfaces.
Key features of the ATSAME51J19A-MF include: 120 MHz core with FPU, 512 KB Flash, 192 KB SRAM, full-speed USB 2.0 with embedded PHY, two CAN-FD controllers, a 12-bit 1 Msps ADC, two 12-bit DACs, multiple SERCOM (UART/SPI/I2C) channels, an on-board crypto accelerator for AES and secure boot, and an Event System for inter-peripheral signaling without CPU involvement.
Architecturally, the device pairs a Cortex-M4F core with a multi-layer AHB/APB bus matrix, a low-power SleepWalking peripheral controller, and a dual-panel Flash subsystem that enables in-field firmware upgrades without downtime. The on-chip 32 kHz crystal-less USB PLL and the SERCOM module each independently routable to most I/O pins provide PCB layout flexibility.
Typical applications include industrial motor control (FOC for BLDC/PMSM), USB-CAN bridge gateways, building automation HMI, predictive-maintenance sensor hubs, and portable medical instrumentation. The AEC-Q100 qualified -MUT variant addresses automotive body and chassis ECUs, while the -MF variant targets extended-temperature industrial designs.
When designing in this part, budget attention to the dual-panel Flash programming flow and the SERCOM pin-mux configuration; both are common first-prototype pitfalls. The integrated 1.2V core LDO requires a 1 uF X7R bypass on VDDIO and a 4.7 uF bulk on VDDIN to meet USB inrush specifications.
This page synthesizes distributor pricing, drop-in alternatives within the SAM E51 family, and practical design notes not collected on a single manufacturer datasheet page.
Drop-in alternatives for ATSAME51J19A-MF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATSAME51J19A-MF (same form factor and footprint) — differing in Package, Operating Temperature, SRAM, USB, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAME51J19A-MFT
✅ Drop-In✓ In Stock
$5.78 / Unit
View Datasheet →ATSAME51J19A-AUT-EFP
✅ Drop-In✓ In Stock
$6.45 / Unit
View Datasheet →ATSAME51J19A-MUT-EFP
✅ Drop-In✓ In Stock
$2.43 / Unit
View Datasheet →ATSAME51J18A-MFT
✅ Drop-In✓ In Stock
$4.15 / Unit
ATSAME51G19A-MFT
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →ATSAME51G18A-MFT
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →ATSAMD51J19A-MF
✅ Drop-In✓ In Stock
$5.4 / Unit
View Datasheet →ATSAMD51J20A-MF
✅ Drop-In✓ In Stock
$5.2 / Unit
View Datasheet →ATSAME51J19A-MF Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M4F with FPU |
| Maximum CPU Frequency | 120 MHz |
| Flash Memory | 512 KB |
| SRAM | 192 KB |
| Operating Voltage | 1.71 V to 3.63 V |
| Package | 64-pin QFN (9x9 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (Extended Industrial) |
| USB | USB 2.0 Full-Speed with embedded PHY |
| CAN | 2x CAN-FD controllers |
| ADC | 12-bit, up to 1 Msps |
| DAC | 2x 12-bit DAC |
| Communication Interfaces | SERCOM (UART/SPI/I2C), I2S, HS USB |
| Crypto Accelerator | AES, secure boot, true random number generator |
| RoHS Status | Compliant |
| MSL Level | 3 (per JEDEC J-STD-020) |
ATSAME51J19A-MF Pin Configuration
| Pin 1 | PB00 — General purpose I/O / SERCOM |
| Pin 2 | PB01 — General purpose I/O / SERCOM |
| Pin 3 | PB02 — General purpose I/O / SERCOM / ADC |
| Pin 4 | PB03 — General purpose I/O / SERCOM / ADC |
| Pin 5 | PA00 — General purpose I/O / SERCOM |
| Pin 6 | PA01 — General purpose I/O / SERCOM |
| Pin 7 | VDDIO — Digital I/O supply voltage |
| Pin 8 | GND — Common ground reference |
| Pin 9 | PA02 — General purpose I/O / SERCOM |
| Pin 10 | PA03 — General purpose I/O / SERCOM |
| Pin 11 | PA04 — General purpose I/O / SERCOM / ADC |
| Pin 12 | PA05 — General purpose I/O / SERCOM / ADC |
| Pin 13 | PA06 — General purpose I/O / SERCOM / ADC |
| Pin 14 | PA07 — General purpose I/O / SERCOM / ADC |
| Pin 15 | PA08 — General purpose I/O / SERCOM / I2S |
| Pin 16 | PA09 — General purpose I/O / SERCOM / I2S |
| Pin 17 | PA10 — General purpose I/O / SERCOM |
| Pin 18 | PA11 — General purpose I/O / SERCOM |
| Pin 19 | VDDIN — Voltage regulator input supply |
| Pin 20 | GND — Common ground reference |
| Pin 21 | PA12 — General purpose I/O / SERCOM |
| Pin 22 | PA13 — General purpose I/O / SERCOM |
| Pin 23 | PA14 — General purpose I/O / SERCOM |
| Pin 24 | PA15 — General purpose I/O / SERCOM |
| Pin 25 | PA16 — General purpose I/O / SERCOM / I2S |
| Pin 26 | PA17 — General purpose I/O / SERCOM / I2S |
| Pin 27 | PA18 — General purpose I/O / SERCOM |
| Pin 28 | PA19 — General purpose I/O / SERCOM |
| Pin 29 | PA20 — General purpose I/O / SERCOM |
| Pin 30 | PA21 — General purpose I/O / SERCOM |
| Pin 31 | PA22 — General purpose I/O / SERCOM |
| Pin 32 | PA23 — General purpose I/O / SERCOM / USB |
| Pin 33 | PA24 — General purpose I/O / SERCOM / USB |
| Pin 34 | PA25 — General purpose I/O / SERCOM |
| Pin 35 | PA27 — General purpose I/O / SERCOM |
| Pin 36 | PA28 — General purpose I/O |
| Pin 37 | GND — Common ground reference |
| Pin 38 | VDDIO — Digital I/O supply voltage |
| Pin 39 | PB04 — General purpose I/O / SERCOM |
| Pin 40 | PB05 — General purpose I/O / SERCOM |
| Pin 41 | PB06 — General purpose I/O / SERCOM |
| Pin 42 | PB07 — General purpose I/O / SERCOM |
| Pin 43 | PB08 — General purpose I/O / SERCOM |
| Pin 44 | PB09 — General purpose I/O / SERCOM |
| Pin 45 | PB10 — General purpose I/O / SERCOM |
| Pin 46 | PB11 — General purpose I/O / SERCOM |
| Pin 47 | PB12 — General purpose I/O / SERCOM |
| Pin 48 | PB13 — General purpose I/O / SERCOM |
| Pin 49 | PB14 — General purpose I/O / SERCOM |
| Pin 50 | PB15 — General purpose I/O / SERCOM |
| Pin 51 | PB16 — General purpose I/O / SERCOM |
| Pin 52 | PB17 — General purpose I/O / SERCOM |
| Pin 53 | PB18 — General purpose I/O / SERCOM |
| Pin 54 | PB19 — General purpose I/O / SERCOM |
| Pin 55 | PB20 — General purpose I/O / SERCOM |
| Pin 56 | PB21 — General purpose I/O / SERCOM |
| Pin 57 | VDDIN — Voltage regulator input supply |
| Pin 58 | GND — Common ground reference |
| Pin 59 | PB22 — General purpose I/O / SERCOM |
| Pin 60 | PB23 — General purpose I/O / SERCOM |
| Pin 61 | PB24 — General purpose I/O / SERCOM |
| Pin 62 | PB25 — General purpose I/O / SERCOM |
| Pin 63 | RESET — Active-low reset input |
| Pin 64 | VDDIO — Digital I/O supply voltage |
Typical Applications
ATSAME51J19A-MF is suitable for 7 applications: Industrial Motor Control (BLDC/PMSM FOC), USB-CAN-FD Industrial Bridge Gateway, Building Automation and HMI Controllers, Predictive Maintenance Sensor Hub, Portable Medical Instrumentation, Automotive Body and Chassis ECU Prototyping, Drone Flight Controller Reference Design.
Industrial Motor Control (BLDC/PMSM FOC)
The ATSAME51J19A-MF fits industrial motor control because its 120 MHz Cortex-M4F core with hardware FPU executes Field-Oriented Control loops for BLDC and PMSM motors in microsecond cycles, while the 12-bit 1 Msps ADC samples phase currents with negligible conversion latency. The Event System routes ADC-compared triggers to TCC timer counters without CPU involvement, lowering interrupt overhead. Two CAN-FD channels allow simultaneous connection to a VFD network and an isolated service bus, and the AES accelerator secures OEM firmware. The 9x9 mm QFN with exposed pad sinks motor-driver switching losses via the ground plane, and the -40C to +125C operating range supports under-hood industrial cabinets.
Recommended
USB-CAN-FD Industrial Bridge Gateway
The ATSAME51J19A-MF integrates Full-Speed USB 2.0 with embedded PHY and two independent CAN-FD controllers on the same die, eliminating the need for an external PHY or a companion MCU. This single-chip USB-to-CAN-FD bridge reduces BOM cost and PCB area while supporting 5 Mbps CAN-FD payloads. The 192 KB SRAM buffers full-speed USB isochronous traffic and CAN-FD bursts concurrently. The dual-panel Flash allows a bootloader in one panel to reflash the application panel during runtime, enabling remote firmware updates over USB. Industrial -40C to +125C operation suits factory floor deployments, and the AEC-Q100 qualified -AUT-EFP variant serves automotive diagnostic tools.
Recommended
Building Automation and HMI Controllers
The ATSAME51J19A-MF addresses building automation with its five SERCOM channels routable to UART, SPI, or I2C for sensor fan-out, plus USB and CAN-FD for BACnet/Modbus gateway integration. The 12-bit ADC reads thermistor, occupancy, and CO2 sensor inputs, while two 12-bit DACs drive dimmer reference voltages for lighting control. The Cortex-M4F core runs HVAC control loops and an embedded HTTPS server within its 512 KB Flash budget, with 192 KB SRAM supporting TLS sockets without external memory. The QFN package enables flush-mounted wall-switch and thermostat form factors where PCB height is constrained.
Recommended
Predictive Maintenance Sensor Hub
The ATSAME51J19A-MF integrates vibration, current, and temperature acquisition with on-chip FFT computation using the Cortex-M4F DSP extensions and single-precision FPU, reducing or eliminating an external DSP. The 12-bit 1 Msps ADC captures vibration at 50 kHz sample rate while SERCOM channels stream accelerometer data via SPI. Two CAN-FD channels broadcast processed vibration features to a higher-level PLC or edge gateway. AES encryption with secure boot protects proprietary condition-monitoring algorithms. The 192 KB SRAM holds circular buffers for FFT windows without off-chip memory, fitting compact DIN-rail-mounted sensor enclosures.
Recommended
Portable Medical Instrumentation
The ATSAME51J19A-MF suits portable medical devices like pulse-oximeters and patient monitors where its low-power SleepWalking peripherals allow continuous sensing at microamp-level standby current while the CPU remains dormant. The 12-bit 1 Msps ADC captures PPG and ECG signals, the FPU executes DSP filtering on heart-rate extraction, and USB 2.0 powers and charges the device while streaming data to a host PC. The -40C to +125C range ensures operation across clinical and field-ambulatory environments, and the 192 KB SRAM retains sample windows for trend analysis. Cryptographic accelerators support HIPAA-aligned data-at-rest protection.
Recommended
Automotive Body and Chassis ECU Prototyping
The ATSAME51J19A-MF is widely used to prototype body and chassis ECUs that consume CAN-FD traffic from powertrain networks, with the ATSAME51J19A-AUT-EFP variant offering AEC-Q100 qualification for production deployment. The 120 MHz Cortex-M4F core runs AUTOSAR-compliant applications and CAN network management, while the on-chip crypto accelerator secures diagnostic services (UDS over CAN-FD) per ISO 14229. The dual-panel Flash supports FOTA updates mandated for next-generation ECUs. The 9x9 mm QFN footprint drops into existing automotive PCB libraries that already use SAMD/SAME family parts, easing qualification re-use.
Recommended
Drone Flight Controller Reference Design
The ATSAME51J19A-MF fits hobby and light-commercial drone flight controllers that require a deterministic 120 MHz Cortex-M4F core running PID loops at 1 kHz update rate, with the FPU accelerating quaternion-based attitude math. The 12-bit ADC reads battery current and voltage at high speed, the SERCOM channels interface to SPI IMUs and UART GPS receivers, and the dual-panel Flash supports failsafe firmware partitions. Two CAN-FD channels enable companion-computer links to companion boards. The -40C to +125C range and the small 9x9 mm QFN footprint fit lightweight airframes.
Recommended
Recommended Products Summary
Engineering reference data for ATSAME51J19A-MF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME51J19A-MFT | ATSAME51J19A-AUT-EFP | ATSAME51J18A-MFT | ATSAME51G19A-MFT | ATSAMD51J19A-MF | ATSAMD51J20A-MF |
|---|---|---|---|---|---|---|---|
| Package | 64-pin QFN (9x9 mm) | 64-pin QFN (9x9 mm) | 64-pin QFN (9x9 mm) | 64-pin QFN (9x9 mm) | 64-pin QFN (9x9 mm) | 64-pin QFN (9x9 mm) | 64-pin QFN (9x9 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 512 KB | 512 KB | 512 KB | 256 KB | 512 KB | 512 KB | 1 MB |
| SRAM | 192 KB | 192 KB | 192 KB | 192 KB | 192 KB | 192 KB | 256 KB |
| CAN-FD | 2x CAN-FD | 2x CAN-FD | 2x CAN-FD | 2x CAN-FD | None | None | None |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C (AEC-Q100) | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +85C |
| 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 | USB 2.0 Full-Speed + HS |
| Core | Cortex-M4F | Cortex-M4F | Cortex-M4F | Cortex-M4F | Cortex-M4F | Cortex-M4F | Cortex-M4F |
| Unit Price (qty-1000) | USD 4.05 | USD 4.05 (estimated) | USD 5.20 (estimated) | USD 3.65 (estimated) | USD 3.85 (estimated) | USD 3.75 (estimated) | USD 4.95 (estimated) |
Key Differentiators
- Includes two CAN-FD controllers in the same QFN-64 footprint (vs ATSAME51G19A-MFT)
- Industrial extended temperature range -40C to +125C (vs ATSAMD51J19A-MF)
- Dual-panel Flash for fail-safe in-field updates (vs ATSAMD51J20A-MF)
Design Notes
Place a 4.7 uF X7R ceramic bypass on VDDIN (pin 19 and pin 57) within 3 mm of the pins and a 1 uF X7R on each VDDIO (pins 7, 38, 64). The internal 1.2V LDO requires these capacitors to meet the 5V-tolerance and USB inrush specifications. Use a star-ground topology with the QFN exposed pad as the single-point ground tie to the PCB ground plane.
Solder the QFN-64 exposed thermal pad (pin 65) directly to a continuous ground-pour region no smaller than 25 mm x 25 mm to achieve the datasheet thermal resistance. Place at least 12 thermal vias (0.3 mm drill, 0.5 mm pitch) under the pad connecting top and inner ground planes. Avoid routing signal traces beneath the QFN body.
SAM E51 SERCOM channels are multiplexed - mis-assigning pin-mux in Atmel START / MPLAB Harmony is the most common first-prototype pitfall. Confirm SERCOM PAD assignments against the 'I/O Multiplexing and Considerations' table in the datasheet before committing PCB layout. Also configure NVMCTRL to use dual-panel Flash mode before enabling FOTA, otherwise the bootloader cannot reflash the live application.
Compliance Information
Standard ATSAME51J19A-MF is not AEC-Q100 qualified. Choose ATSAME51J19A-AUT-EFP variant for AEC-Q100 Grade 1 automotive qualification. RoHS and REACH compliance per Microchip product environmental compliance documentation.
