The Texas Instruments MSP430 family of ultralow-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 the device to wake up from low-power modes to active mode in less than 5 µs.
The MSP430F543x and MSP430F541x series are microcontroller configurations with three 16-bit timers, a high-performance 12-bit analog-to-digital converter (ADC), up to four universal serial communication interfaces (USCIs), a hardware multiplier, DMA, a real-time clock (RTC) module with alarm capabilities, and up to 87 I/O pins.
Typical applications for this device include analog and digital sensor systems, digital motor control, remote controls, thermostats, digital timers, and hand-held meters.
Low Supply Voltage Range: 2.2 V to 3.6 V
Ultralow Power Consumption
Active Mode (AM): All System Clocks Active
312 µA/MHz at 8 MHz, 3.0 V, Flash Program Execution (Typical)
140 µA/MHz at 8 MHz, 3.0 V, RAM Program Execution (Typical)
Standby Mode (LPM3):
Real-Time Clock (RTC) With Crystal, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wakeup: 2.6 µA at 3.0 V (Typical)
Low-Power Oscillator (VLO), General-Purpose Counter, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wakeup: 1.8 µA at 3.0 V (Typical)
Off Mode (LPM4): Full RAM Retention, Supply Supervisor Operational, Fast Wakeup: 1.69 µA at 3.0 V (Typical)
Wakeup From Standby Mode in Less Than 5 µs
16-Bit RISC Architecture
Up to 18-MHz System Clock
Flexible Power Management System
Fully Integrated LDO With Programmable Regulated Core Supply Voltage
Supply Voltage Supervision, Monitoring, and Brownout