1.1 Features 1

• 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)

• Wake up 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 with automatic baud-rate 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

• Device Comparison summarizes the available family members