Hardware / Microcontroller

1. MCU Basics

The MCU (Micro-Controller Unit) used on the kit is a low-power 16-bit of the Texas Intruments MSP430 micro-controller family.

The MCU features:

• low voltage supply (1.8V - 3.6V)

• low current consumption (330uA in active mode at 1MHz and 2.2V, 1.1uA in stand-by mode, 0.2uA in off mode)

• 16-bit RISC architecture, 125ns instruction cycle

• 48KB FLASH memory, 2kB RAM memory (92kB FLASH and 8kB RAM in case of FITkit 2.0)

• Additional features:

  • 3-channel DMA

  • 16-bit timers Timer_A, Timer_B

  • comparator unit

  • serial communication interfaces USART0 (asynchronous UART, synchronous SPI, I2C), USART1 (asynchronous UART, synchronous SPI)

  • 12-bit A/D and D/A converter

2. Placing on the FITkit

Figure 2.1: The placing of the MCU

3. The Interconnection

Figure 3.1: Schematics of the MCU interconnection