Описание
The TI MSP430 family of ultra-low-power microcontrollers consists of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with extensive 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 3.5 µs (typical). The MSP430F543xA and MSP430F541xA series are microcontroller configurations with three 16-bit timers, a high-performance 12-bit ADC, up to four universal serial communication interfaces (USCIs), a hardware multiplier, DMA, an 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.
- Active Mode (AM):
All System Clocks Active
230 µA/MHz at 8 MHz, 3.0 V, Flash Program Execution (Typical)
110 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:
1.7 µA at 2.2 V, 2.1 µA at 3.0 V (Typical)
Low-Power Oscillator (VLO), General-Purpose Counter, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wakeup:
1.2 µA at 3.0 V (Typical) - Off Mode (LPM4):
Full RAM Retention, Supply Supervisor Operational, Fast Wakeup:
1.2 µA at 3.0 V (Typical) - Shutdown Mode (LPM4.5):
0.1 µA at 3.0 V (Typical)
- Extended Memory
- Up to 25-MHz System Clock
- Fully Integrated LDO With Programmable Regulated Core Supply Voltage
- Supply Voltage Supervision, Monitoring, and Brownout
- FLL Control Loop for Frequency Stabilization
- Low-Power Low-Frequency Internal Clock Source (VLO)
- Low-Frequency Trimmed Internal Reference Source (REFO)
- 32-kHz Crystals
- High-Frequency Crystals up to 32 MHz
- USCI_A0, USCI_A1, USCI_A2, and USCI_A3 Each Support:
- Enhanced UART Supports Automatic Baud-Rate Detection
- IrDA Encoder and Decoder
- Synchronous SPI
- USCI_B0, USCI_B1, USCI_B2, and USCI_B3 Each Support:
- I2C
- Synchronous SPI
- Internal Reference
- Sample-and-Hold
- Autoscan Feature
- 14 External Channels, 2 Internal Channels
