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

– 290 μA/MHz at 8 MHz, 3 V, Flash Program

Execution (Typical)

– 150 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 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

• 12-Bit Analog-to-Digital Converter (ADC) With

Internal Reference, Sample-and-Hold, and

Autoscan Feature

• 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 Available

Family Members

1.2 Applications

• Analog Sensor Systems

• Digital Sensor Systems

• Data Loggers

• General-Purpose Applications

1.3 Description

The TI MSP family of ultra-low-power microcontrollers consists of several devices that feature 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

microcontroller features a powerful 16-bit RISC CPU, 16-bit registers, and a constant generator that

contribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows the microcontroller

to wake up from low-power modes to active mode in 3.5 μs (typical).

The MSP430F534x MCU configurations feature four 16-bit timers, a high-performance 12-bit ADC, two

USCIs, a hardware multiplier, DMA, an RTC module with alarm capabilities, and 38 I/O pins.

For complete module descriptions, see the MSP430F5xx and MSP430F6xx Family User's Guide.