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Seeeduino Lotus Cortex-M0+ is a SAM D21 Microcontroller development board. The Atmel® SMART™ SAM D21 is a series of low-power microcontrollers using the 32-bit ARM® Cortex®-M0+ processor with 256KB Flash and 32KB of SRAM. Users can consider the Seeeduino Lotus Cortex-M0+ as a combination of Seeeduino and Base Shield. Seeeduino Lotus Cortex-M0+ has 14 digital input/outputs (10 of which support PWM) and 6 analog input/outputs, 3 Serial Communication Interface, a micro USB connector, a JST2.0 Li-Po connector, an ICSP header, 12 Grove connectors, a reset button. Seeeduino Lotus Cortex-M0+ is an upgraded version of Seeeduino Lotus V1.1, it replaces a more powerful chip, optimizes the circuit layout, and the power supply is more stable. Because this chip supports direct USB level output, there is no need to use a serial port to USB chip, like CP2102N. Therefore, one more hardware serial port is available to the user.

• Compatible with Arduino UNO
• ARM® Cortex®-M0+ 32bit 48MHz microcontroller(SAMD21)
• Support power path management
• Support micro-USB or li-po battery powered
• 2A maximum charging current
• Suitable for low power design