ATSAMD51J19A - AUT Microchip Integrated Circuit (Quad Flat Packages) In Stock
The ATSAMD51J19A-AUT is a 32-bit ARM Cortex-M4F microcontroller from Microchip with 512KB Flash and 192KB SRAM running at up to 120 MHz in a 64-pin TQFP package. It features FPU, DSP instructions, USB Full Speed, and multiple serial interfaces for IoT, wearable, and industrial control applications.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- ATSAMD51J19A - AUT Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ARM Cortex-M4F core at 120 MHz with hardware FPU and DSP instructions for real-time signal processing
- 512KB Flash and 192KB SRAM with USB Full Speed device/host for connectivity in IoT and wearable designs
- 64-pin TQFP package with rich peripheral set including multiple SPI, I2C, UART, and 12-bit ADC channels
Applications
The ATSAMD51J19A-AUT is ideal for IoT edge nodes, wearable devices, and industrial sensor hubs that require a high-performance 32-bit core with floating-point acceleration at low power consumption. Its USB Full Speed interface enables direct PC connectivity for data logging and firmware update without external USB chips. The 120 MHz Cortex-M4F core with DSP extensions supports audio processing, sensor fusion, and machine learning inference on embedded platforms.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ATSAMD51J19A - AUT:
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4F CPU, 100MHz, CMOS, PQFP64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4F CPU, 100MHz, CMOS, PBGA64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4F CPU, 100MHz, CMOS, PQFP64
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4F CPU, 100MHz, CMOS, PQFP64
Frequently Asked Questions
What is the clock speed and core architecture of the ATSAMD51J19A-AUT, and how does that compare to Cortex-M0+ SAM D21 devices?
The ATSAMD51J19A-AUT uses an ARM Cortex-M4F core clocked at up to 120 MHz with a hardware floating-point unit and DSP instructions. Compared to the SAM D21's Cortex-M0+ at 48 MHz, this delivers approximately 2.5x more clock cycles per second and adds hardware FPU capability, making it substantially faster for computation-intensive tasks like sensor fusion and audio filtering.
How much Flash and SRAM does the ATSAMD51J19A-AUT provide, and is it sufficient for MicroPython or Arduino firmware?
The ATSAMD51J19A-AUT integrates 512KB of Flash and 192KB of SRAM, which is sufficient to run MicroPython firmware leaving approximately 200KB of Flash free for user scripts and 100KB of SRAM for runtime data. Arduino-based sketches typically consume far less, leaving ample space for complex IoT and sensor applications.
Which peripheral interfaces does the ATSAMD51J19A-AUT provide, and how many analog input channels are available?
The ATSAMD51J19A-AUT offers multiple SERCOM-configurable peripherals supporting SPI, I2C, and UART modes, a 12-bit ADC with up to 16 input channels, a 12-bit DAC, USB Full Speed, and hardware CRC. The 64-pin TQFP package exposes enough I/O pins to use several of these peripherals simultaneously in multi-sensor data acquisition designs.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”