Microchip Technology ATSAMD51J18A-AF

Mfr. Part

ATSAMD51J18A-AF

Manufacturer

Micrel / Microchip Technology

Y-IC is a quality distributor of Microchip. We stand behind the brand and will provide you with the best products, fast service, and dependable support.

Detailed Description

High-performance 32-bit microcontroller based on ARM Cortex-M4F. 256KB Flash, 128KB SRAM, 64-pin TQFP package (10 x 10 mm), automotive AEC-Q100 series. Runs up to 120 MHz. Rich analog, digital, and communication peripherals. Wide operating voltage 1.71V to 3.63V, wide temperature -40°C to +125°C. RoHS3 compliant.

Key Features

Core: ARM Cortex-M4F (single-precision FPU, DSP instructions), single core, 32-bit, up to 120 MHz

Memory: 256KB Flash (256K x 8), 128KB SRAM (128K x 8)

I/O: 64-pin TQFP package with 51 user I/O

Analog: 24-channel 12-bit ADC, 2-channel 12-bit DAC

Peripherals: DMA, PWM, brown-out detect/reset, power-on reset, flexible interrupt system

Connectivity: External Bus/Memory Interface (EBI/EMI), I2C, IrDA, LIN bus support (external transceiver required), MMC/SD, QSPI, SPI, UART/USART, USB Full-Speed

Clocking: Internal oscillator, supports external crystal

Power: 1.71V to 3.63V operation, low-power modes

Temperature: -40°C to +125°C (TA)

Compliance: RoHS3, AEC-Q100 automotive series

Package: 64-TQFP (10 x 10 mm), surface-mount, tray

Key Advantages

Strong performance with floating-point and DSP for precise control and signal processing

Rich peripheral set to reduce external components and simplify design

Wide voltage and temperature ranges for harsh automotive and industrial environments

AEC-Q100 series supports automotive reliability needs

Flexible memory and I/O for scalable applications

Mature Microchip ecosystem: tools, libraries, and long-term availability

Low-power operation with multiple sleep modes to extend battery life

Packaging

Type: 64-TQFP (Thin Quad Flat Package), surface-mount

Material: Molded epoxy body with copper leadframe; matte tin-plated leads (typical)

Size: 10 x 10 mm body, 64 leads; typical lead pitch ~0.5 mm (check datasheet for exact pitch)

Pin configuration: 64 pins total; approximately 51 GPIO available, plus power, ground, analog, and interface pins; top-side laser marking for device ID

Thermal characteristics: Ambient operating -40°C to +125°C; thermal resistance values depend on PCB and airflow—refer to datasheet for θJA/θJC and derating

Electrical properties: 1.71V–3.63V supply; internal oscillator; USB FS capable; ESD protection and IO characteristics defined in datasheet

Supplier device package: 64-TQFP (10x10)

Shipment form: Tray packaging for automated assembly

Lifecycle

Status: Active and widely used. Not near discontinuation based on current industry data.

Same-family equivalents and close alternatives:

- ATSAMD51J19A-AF: 512KB Flash, 128KB SRAM, 64-TQFP, higher Flash capacity for larger code

- ATSAMD51J20A-AF: 1MB Flash, 256KB SRAM (family variant), 64-TQFP, for memory-intensive applications

- ATSAMD51G18A-AF: 256KB Flash, smaller 48-pin package for tighter board space

- ATSAMD51N19A-AF: 512KB Flash, 100-pin package for more I/O

- ATSAME51J19A-AF: Cortex-M4F with CAN FD (needs external transceiver), 64-TQFP, for automotive networking

- ATSAME54J19A-AF: Cortex-M4F with Ethernet MAC and CAN FD, 64-TQFP, for connected industrial/automotive systems

Cross-vendor options (for similar performance/features; pin/software changes expected):

- STMicroelectronics STM32F4 series (e.g., STM32F405/STM32F407): M4F up to 168 MHz, rich peripherals

- NXP Kinetis K64/K66: M4F up to 180 MHz, Ethernet/USB options

- TI TM4C129x: M4F with Ethernet, USB, industrial interfaces

If you need drop-in or fully compatible replacements, contact our sales team via the Y-IC website for tailored guidance on footprint, firmware, and peripheral mapping.

Key Application Areas

Automotive ECUs, body electronics, LIN nodes (with external LIN transceiver)

Industrial control, motor control, PLC interfaces

Human-machine interface, instrumentation, data logging

IoT gateways, connected sensors, USB devices

Consumer electronics, smart appliances, wearables (low-power modes)

Storage/media controllers using QSPI and SD/MMC

Datasheet

Y-IC provides the most authoritative and up-to-date datasheet for ATSAMD51J18A-AF on our product page. Download it now to get exact electrical, timing, thermal, and pin details recommended by Microchip.

Request for Quotation Now

Get a Quote on Y-IC today. Learn More about specs and lead times on the product page. Limited Time Offer for project and volume pricing—act now to secure supply and support from our expert team.