Texas Instruments' MSP430 family of ultra-low-power microcontrollers consists of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with five low-power modes, is optimized to achieve extended battery life in portable measurement applications. The device features a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 1 µs.
The MSP430G2553 series are ultra-low-power mixed signal microcontrollers with built-in 16-bit timers, up to 24 I/O capacitive-touch enabled pins, a versatile analog comparator, and built-in communication capability using the universal serial communication interface. In addition, the MSP430G2553 family members have a 10-bit analog-to-digital ADC.
Typical applications include low-cost sensor systems that capture analog signals, convert them to digital values, and then process the data for display or for transmission to a host system.
TI Design Link: Proximity Sensing of up to 30CM Range with >15dB SNR and Robust Capacitive Touch Reference Design
- Low supply-voltage range: 1.8 V to 3.6 V
- Ultra-low power consumption
- Active mode: 230 µA at 1 MHz, 2.2 V
- Standby mode: 0.5 µA
- Off mode (RAM retention): 0.1 µA
- Five power-saving modes
- Ultra-fast wake-up from standby mode in less than 1 µs
- 16-bit RISC architecture, 62.5 ns instruction cycle time
- Basic clock module configurations
- Internal frequencies up to 16 MHz with four calibrated frequency
- Internal very-low-power low-frequency (LF) oscillator
- 32 kHz crystal
- External digital clock source
- Two 16-bit Timer_A with three capture/compare registers
- Up to 24 capacitive-touch enabled I/O pins