SparkFun Qwiic Micro - SAMD21 Development Board

The SparkFun Qwiic Micro is a compact development board built around the ATSAMD21E18 microcontroller. Designed in the standard 1 x 1 inch Qwiic form factor, it is one of SparkFun's smallest SAMD21-based development boards. The powerful 32-bit ARM Cortex-M0+ processor operates at up to 48MHz and provides 256KB flash memory and 32KB SRAM for a wide range of embedded applications.

The integrated Qwiic connector allows quick connection to sensors, actuators and other Qwiic modules over I2C without soldering. For portable projects, pads are available for an optional LiPo battery connector. Additional pads are also provided for external flash memory expansion. The board integrates seamlessly with the growing SparkFun Qwiic ecosystem of sensors and accessories.

Key features

• ATSAMD21E18 ARM Cortex-M0+ microcontroller
• Compact 1 x 1 inch form factor
• Qwiic I2C connector
• UF2 bootloader for easy programming
• SPI, I2C and UART support
• 12 digital GPIO pins
• 5 analog inputs
• Optional LiPo battery connection
• Expandable external flash memory support

Technical specifications

• Processor: ATSAMD21E18
• CPU architecture: ARM Cortex-M0+
• Clock speed: 48MHz
• Flash memory: 256KB
• SRAM: 32KB
• Digital I/O: 12
• Analog inputs: 5
• Communication: SPI, I2C, UART
• Dimensions: 25.4 x 25.4mm