The MSP430F2131IDWR is a high-performance, ultra-low-power microcontroller unit (MCU) produced by Texas Instruments.

• Built on: a powerful 16-bit RISC CPU with a constant generator
• Features: 16-bit register and constant generators
• ADC: 10-bit Analog-to-Digital Converter (ADC) with internal reference, sample, and hold
• Timer: 16-bit Timer_A with three capture/compare registers
• Interface: universal serial interface that supports SPI and I2C
• Supply voltage: 1.8V to 3.6V
• Power-saving modes: Five
• Package: small surface-mount package
• Temperature range: from -40°C to 85°C