TinyZero - TinyCircuits Processor Board (ATSAMD21)

The TinyZero is TinyCircuits' second-generation processor board, designed to deliver enhanced performance and additional features compared to the original TinyDuino. At its core lies the Atmel ATSAMD21G18A microcontroller (32-bit ARM Cortex M0+), the same chip used in the Arduino Zero, providing robust processing power in an ultra-compact form factor.

Weighing only 1.4 grams and measuring just 20 x 20 mm, this board integrates USB connectivity, power management, and a battery charger. It is fully compatible with the TinyShield ecosystem, allowing for easy stacking of various expansion modules. An optional version includes a low-power Bosch BMA250 accelerometer, adding motion sensing capabilities without increasing the board's size.

Specifications

• Microcontroller: Atmel ATSAMD21G18A (ARM Cortex M0+ 32-bit)
• Clock Speed: 48 MHz
• Memory: 256 KB Flash, 32 KB SRAM
• Analog Peripherals: 12-bit ADC, 10-bit DAC
• Operating Voltage: 2.7V – 5.5V (built-in 3.3V regulator)
• I/O Pins: 20 pins available (up to 10 ADC inputs or 10 PWM outputs)
• Connectivity: USB Port (CDC Serial), plug-and-play compatible
• Dimensions: 20 mm x 20 mm x 0.61 mm (PCB)
• Weight: 1.40 g
• Options: Bosch BMA250 3-axis accelerometer available as an option