1.1 Features 1

• Low Supply-Voltage Range:

3.6 V Down to 1.8 V

• Ultra-Low Power Consumption

– Active Mode (AM): 180 μA/MHz

– Standby Mode (LPM3 WDT Mode, 3 V): 1.1 μA

– Off Mode (LPM4 RAM Retention, 3 V): 0.9 μA

– Shutdown Mode (LPM4.5, 3 V): 0.25 μA

• Wake up From Standby Mode in Less Than 5 μs

• 16-Bit RISC Architecture, Extended Memory, 40-ns

Instruction Cycle Time

• 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 Crystals (XT1)

– High-Frequency Crystals up to 25 MHz (XT1)

• Hardware Multiplier Supports 32-Bit Operations

• 3-Channel DMA

• Up to Twelve 5-V-Tolerant Digital Push/Pull I/Os

With up to 20-mA Drive Strength(1)

• 16-Bit Timer TD0 With Three Capture/Compare

Registers and Support of High-Resolution Mode

(1) Full functionality in the 40-pin QFN package options. For the

available features of other packages, see Signal Descriptions.

• 16-Bit Timer TD1 With Three Capture/Compare

Registers and Support of High-Resolution Mode

• 16-Bit Timer TA0 With Three Capture/Compare

Registers

• Universal Serial Communication Interfaces

(USCIs) (1)

– USCI_A0 Supports:

– Enhanced UART Supports Automatic Baud-

Rate Detection

– IrDA Encoder and Decoder

– Synchronous SPI

– USCI_B0 Supports:

– I2C

– Synchronous SPI

• 10-Bit 200-ksps Analog-to-Digital Converter (ADC)

– Internal Reference

– Sample-and-Hold

– Autoscan Feature

– Up to 8 External Channels and 2 Internal

Channels, Including Temperature Sensor(1)

• Up to 16-Channel On-Chip Comparator Including

an Ultra-Low-Power Mode(1)

• Serial Onboard Programming, No External

Programming Voltage Needed

• Device Comparison Summarizes the Available

Family Members

• Available in 40-Pin QFN (RSB), 38-Pin TSSOP

(DA), and 40-Pin Die-Sized BGA (YFF) Packages

1.2 Applications

• Analog and Digital Sensor Systems

• LED Lighting

• Digital Power Supplies

• Motor Controls

• Remote Controls

• Thermostats

1.3 Description

The TI MSP family of ultra-low-power microcontrollers consists of several devices featuring different sets

of peripherals targeted for various applications. The architecture, combined with five low-power modes, is

optimized to achieve extended battery life in portable measurement applications. The device features a

powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code

efficiency. The digitally controlled oscillator (DCO) allows the devices to wake up from low-power modes to

active mode in less than 5 μs.

The MSP430F51x2 microcontrollers include two 16-bit high-resolution timers, two USCIs (USCI_A0 and

USCI_B0), a 32-bit hardware multiplier, a high-performance 10-bit ADC, an on-chip comparator, a 3-

channel DMA, 5-V tolerant I/Os, and up to 29 I/O pins.

The MSP430F51x1 microcontrollers include two 16-bit high-resolution timers, two USCIs (USCI_A0 and

USCI_B0), a 32-bit hardware multiplier, an on-chip comparator, a 3-channel DMA, 5-V tolerant I/Os, and

up to 29 I/O pins.

Typical applications for these devices include analog and digital sensor systems, LED lighting, digital

power supplies, motor controls, remote controls, thermostats, digital timers, and hand-held meters.

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