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ATSAMD20J18A-AUT

Arm Cortex-M0+ 48MHz MCU, 256KB Flash, 32KB SRAM, 6 SERCOM, 12-bit ADC, 64-TQFP

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Manufacturer Part：

ATSAMD20J18A-AUT

Package：

64-TQFP (10x10mm)

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Description

Product Overview

The ATSAMD20J18A-AUT from Microchip Technology is an Arm Cortex-M0+ microcontroller running at 48MHz with 256KB Flash and 32KB SRAM. Packaged in a 64-pin TQFP, it features six configurable SERCOM modules, 12-bit ADC, 10-bit DAC, and capacitive touch sensing.

Key Specifications

Core Arm Cortex-M0+ @ 48MHz
Flash Memory 256KB
SRAM 32KB
ADC 12-bit, 20 channels, oversampling to 16-bit
DAC 10-bit, 350ksps
SERCOM 6 (configurable as USART/SPI/I2C)
Touch 256-channel capacitive sensing
Package 64-TQFP (10x10mm)
Supply Voltage 1.62V to 3.63V
Operating Temperature -40 to +105 C

Features

  • 48MHz Cortex-M0+ with single-cycle hardware multiplier
  • Six SERCOM modules configurable as UART, SPI, or I2C
  • 12-bit ADC with hardware oversampling up to 16-bit
  • 10-bit DAC at 350ksps
  • 8-channel event system for peripheral interconnection
  • 52 GPIO pins with flexible pin muxing
  • 32-bit RTC with calendar function

Applications

  • Home automation and smart home
  • Consumer electronics with touch UI
  • Industrial metering and sensing
  • Wearable and portable devices

The ATSAMD20J18A-AUT is an Arm Cortex-M0+ microcontroller from Microchip Technology with 256KB Flash and 32KB SRAM running at 48MHz. It features six highly flexible SERCOM modules that can each be independently configured as USART, SPI, or I2C interfaces. The 12-bit ADC supports hardware oversampling to achieve up to 16-bit equivalent resolution, while the 10-bit DAC at 350ksps enables analog output generation. The capacitive touch controller supports up to 256 channels for sophisticated user interfaces. The event system allows peripherals to interact without CPU intervention, reducing latency and power consumption.

The ATSAMD20J18A-AUT is based on the Arm Cortex-M0+ core with a two-stage pipeline optimized for low power and high code density. The six SERCOM (Serial Communication) modules are each independently configurable as USART, SPI, or I2C, providing maximum flexibility for communication-intensive applications. The 12-bit ADC with differential inputs and programmable gain stage uses hardware oversampling and decimation to extend effective resolution. The event system provides eight channels for inter-peripheral communication without CPU involvement, enabling low-latency response to external events. The DFLL48M and FDPLL96M clock generators provide flexible clocking options. SleepWalking allows peripherals to operate in low-power modes.

Pin Group Count Function
GPIO 52 General-purpose I/O with pin muxing
ADC 20 12-bit analog input channels
DAC 1 10-bit analog output
SERCOM 6 Configurable USART/SPI/I2C
Touch Up to 256 Capacitive touch channels
Timers 8 16-bit TC + 32-bit TC combinations
Power 6+ VDD, VDDANA, VDDIO, VSS
Debug 2 SWD (SWDIO, SWCLK)
  • Home automation controllers with capacitive touch UI and multiple communication interfaces
  • Industrial metering systems with high-resolution ADC and DAC for sensor conditioning
  • Consumer wearables needing low power, touch sensing, and BLE connectivity via SERCOM
  • Multi-protocol gateway devices leveraging six independently configurable SERCOM modules
Model Manufacturer Key Difference
ATSAMD20J17A-AUT Microchip 128KB Flash variant
ATSAMD21J18A-AUT Microchip 48MHz, USB 2.0 FS capable
STM32L072V8I6 ST Ultra-low-power Cortex-M0+
MKL27Z64VFM4 NXP Cortex-M0+, 64KB Flash, 48MHz
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

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All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

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5. Local Pickup in Shenzhen

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

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We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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