• Low supply-voltage range: 3.6 V down to 1.8 V
• Ultra-low power consumption
– Active mode (AM): all system clocks active 290 µA/MHz at 8 MHz, 3.0 V, flash program execution (typical) 150 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: 1.9 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: 1.4 µA at 3.0 V (typical)
– Off mode (LPM4): full RAM retention, supply supervisor operational, fast wakeup: 1.1 µA at 3.0 V (typical)
– Shutdown mode (LPM4.5): 0.18 µA at 3.0 V (Typical)
• Wake up from standby mode in 3.5 µs (typical)
• 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 with automatic baud-rate detection
• IrDA encoder and decoder
• Synchronous SPI
– USCI_B0 and USCI_B1 each support:
• I2C
• Synchronous SPI
• 10-bit analog-to-digital converter (ADC) with internal reference, sample-and-hold
• Comparator
• Hardware multiplier supports 32-bit operations
• Serial onboard programming, no external programming voltage needed
• 3-channel internal DMA
• Basic timer with RTC feature
• Device Comparison summarizes the family members
