SparkFun Micro SAMD21 Microcontroller Board Products

Created: 12Sep2024 09:01:34 UTC 2024-09-12T09:01:34Z
Updated: 12Sep2024 23:02:47 UTC 2024-09-12T23:02:47Z

Description

The SparkFun SAMD21 Micro microcontroller board breaks out the SAMD21 MCUMicrocontroller Unit on a board with a mini form factor (1.3in x 0.7in). The board includes a Micro-B USB connector for power and programming, QwiicQwiic connectors are SparkFun's name for 4-pin JST SH connectors with 1.0mm pitch. These connectors were implemented on SparkFun boards to make it easy to plug-n-play various sensors and devices without soldering and wiring. Qwiic is cross-compatible with Adafruit's STEMMA QT connectors. connector for I2CInter-Integrated Circuit. Also referred to as IIC or I²C., reset button, and programmable LEDLight Emitting Diodes. There are also solder pads on the back of the board to add more memory with a 8-Pin SOICSmall Outline Integrated Circuit SPISerial Peripheral Interface Flash chip.

Processor

ATSAMD21E18 32-bit 48MHz Cortex M0+

Memory

256KB Flash
32KB SRAMStatic Random Access Memory
(optional) solder pads on the back of the board for adding an 8-Pin SOICSmall Outline Integrated Circuit SPISerial Peripheral Interface Flash chip

I/OInput/Output

1x Micro-B USB connector (USB 2.0 Host or Device Full/Low speed)
12x Digital I/OInput/Output with PWMPulse-Width Modulation (3.3V Logic)
5x Analog Inputs 12-bit ADCAnalog-to-Digital Converter (ADC, A/D, or A-to-D) (0V to 3.3V range)
1x Analog Output 10-bit DACDigital-to-Analog Converter (DAC, D/A, or D-to-A) (0V to 3.3V range)
Communication interfaces (3.3V Logic): 1x UARTUniversal Asynchronous Receiver-Transmitter, 1x I2CInter-Integrated Circuit. Also referred to as IIC or I²C., 1x SPISerial Peripheral Interface, and 1x I2SInter-IC Sound.
4 pins that break out the SWDSerial Wire Debug interface.

User Interface

1x Power On/Off Switch
1x Reset Button
1x Power Indicator Red LED (labeled PWR)
1x Pin #13 Status Blue LED (labeled D13)

Power

The board can be powered by 5V using the Micro-B USB connector or by 3.3V using the 3.3V and GND pins (power header pins are not regulated). On the underside of the board there are open pads to solder a JST connector for a Battery.

Board Size