* Low Supply-Voltage Range: 3.6 V Down to 1.8 V * Ultra-Low-Power Consumption * Active Mode (AM) All System Clocks Active * 195 µA/MHz at 8 MHz, 3 V, Flash Program Execution (Typical) * 115 µA/MHz at 8 MHz, 3 V, RAM Program Execution (Typical) * Standby Mode (LPM3) * Real-Time Clock (RTC) With Crystal, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wakeup: 1.9 µA at 2.2 V, 2.1 µA at 3 V (Typical) * Low-Power Oscillator (VLO), General-Purpose Counter, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wakeup: 1.4 µA at 3 V (Typical) * Off Mode (LPM4) Full RAM Retention, Supply Supervisor Operational, Fast Wakeup: 1.1 µA at 3 V (Typical) * Shutdown Mode (LPM4.5) 0.18 µA at 3 V (Typical) * Wakeup From Standby in Less Than 5 µs * 16-Bit RISC Architecture, Extended Memory, up to 25-MHz System Clock * Flexible Power-Management System * Fully Integrated LDO With Programmable Regulated Core Supply Voltage * Supply Voltage Supervision, Monitoring, and Brownout * Unified Clock System * FLL Control Loop for Frequency Stabilization * Low-Power Low-Frequency Internal Clock Source (VLO) * Low-Frequency Trimmed Internal Reference Source (REFO) * 32-kHz Watch Crystals (XT1) * High-Frequency Crystals up to 32 MHz (XT2) * 16-Bit Timer TA0, Timer_A With Five Capture/Compare Registers * 16-Bit Timer TA1, Timer_A With Three Capture/Compare Registers * 16-Bit Timer TA2, Timer_A With Three Capture/Compare Registers * 16-Bit Timer TB0, Timer_B With Seven Capture/Compare Shadow Registers * Two Universal Serial Communication Interfaces (USCIs) * USCI_A0 and USCI_A1 Each Support: * Enhanced UART Supports Auto-Baudrate Detection * IrDA Encoder and Decoder * Synchronous SPI * USCI_B0 and USCI_B1 Each Support: * I2C * Synchronous SPI * Full-Speed Universal Serial Bus (USB) * Integrated USB-PHY * Integrated 3.3-V and 1.8-V USB Power System * Integrated USB-PLL * Eight Input and Eight Output Endpoints * 10-Bit Analog-to-Digital Converter (ADC) With Window Comparator * Comparator * Hardware Multiplier Supports 32-Bit Operations * Serial Onboard Programming, No External Programming Voltage Needed * Three-Channel Internal DMA * Basic Timer With RTC Feature