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.