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. These devices feature 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 MSP430G2x44 is an ultra-low power mixed signal microcontroller with two built-in 16-bit timers, a universal serial communication interface, 10-bit A/D converter with integrated reference, data transfer controller (DTC), and 32 I/O pins.
The MSP430G2x55 series includes ultra-low power mixed signal microcontrollers with built-in 16-bit timers, up to 32 I/O touch-sense-enabled pins, a versatile analog comparator, and built-in communication capability using the universal serial communication interface.
- Low supply voltage range: 1.8 V to 3.6 V
- Ultra-low power consumption
- Active mode: 270 µA at 1 MHz, 2.2 V
- Standby mode: 1 µA (MSP430G2x44 ), 0.7 µA (MSP430G2x55)
- Off mode (RAM Retention): 0.1 µA
- Five power-saving modes (MSP430G2x55)
- 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 frequencies
- Internal ultra-low-power low frequency (LF) oscillator
- 32 kHz crystal
- High-frequency (HF) crystal up to 16 MHz
- External digital clock source
- External resistor
MSP430 Ultra-Low Power MCUs