MCU 16-bit MSP430 RISC 256KB Flash 2.5V/3.3V 100-Pin LQFP T/R

The Texas Instruments MSP430 family of ultralow-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 device to wake up from low-power modes to active mode in 3 µs (typical). The MSP430F643x series are microcontroller configurations with an integrated 3.3-V LDO, a high-performance 12-bit analog-to-digital converter (ADC), comparator, two universal serial communication interfaces (USCIs), a hardware multiplier, DMA, four 16-bit timers, a real-time clock module with alarm capabilities, an LCD driver, and up to 74 I/O pins. Typical applications for this device include analog and digital sensor systems, digital motor control, remote controls, thermostats, digital timers, and hand-held meters.

Low Supply Voltage Range: 1.8 V to 3.6 V

Ultralow-Power Consumption

• Active Mode (AM):
  All System Clocks Active:
  270 µA/MHz at 8 MHz, 3.0 V, Flash Program Execution (Typical)
• Standby Mode (LPM3):
  Watchdog With Crystal and Supply Supervisor Operational, Full RAM Retention, Fast Wake-Up:
  1.8 µA at 2.2 V, 2.1 µA at 3.0 V (Typical)
• Shutdown RTC Mode (LPM3.5):
  Shutdown Mode, Active Real-Time Clock With Crystal:
  1.1 µA at 3.0 V (Typical)
• Shutdown Mode (LPM4.5):
  0.3 µA at 3.0 V (Typical)

Wake Up From Standby Mode in 3 µs (Typical)

16-Bit RISC Architecture, Extended Memory, Up to 20-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 Crystals (XT1)
• High-Frequency Crystals Up to 32 MHz (XT2)

Four 16-Bit Timers With 3, 5, or 7 Capture/Compare Registers

Two Universal Serial Communication Interfaces

• USCI_A0 and USCI_A1 Each Support:
  Enhanced UART Supports Auto-Baudrate Detection
  IrDA Encoder and Decoder
  Synchronous SPI
• USCI_B0 and USCI_B1 Each Support:
  I²C
  Synchronous SPI

Integrated 3.3-V Power System

12-Bit Analog-to-Digital Converter (ADC) With Internal Shared Reference, Sample-and-Hold, and Autoscan Feature

Dual 12-Bit Digital-to-Analog Converters (DACs) With Synchronization

Voltage Comparator

Integrated LCD Driver With Contrast Control for up to 160 Segments

Hardware Multiplier Supporting 32-Bit Operations

Serial Onboard Programming, No External Programming Voltage Needed

Six-Channel Internal DMA

Real-Time Clock Module With Supply Voltage Backup Switch