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說明

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 devices feature a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than
6 µs.

The MSP430x461x(1) series are microcontroller configurations with two 16-bit timers, a high-performance 12-bit A/D converter (MSP430x461x only), one universal serial communication interface (USCI), one universal synchronous/asynchronous communication interface (USART), DMA, 80 I/O pins, and a liquid crystal display (LCD) driver with regulated charge pump.

特性

• Low Supply-Voltage Range, 1.8 V to 3.6 V
• Ultralow-Power Consumption:
  • Active Mode: 400 µA at 1 MHz, 2.2 V
  • Standby Mode: 1.3 µA
  • Off Mode (RAM Retention): 0.22 µA
• Five Power-Saving Modes
• Wake-Up From Standby Mode in Less Than 6 µs
• 16-Bit RISC Architecture, Extended Memory, 125-ns Instruction Cycle Time
• Three Channel Internal DMA
• 12-Bit A/D Converter With Internal Reference, Sample-and-Hold and Autoscan
  Feature (MSP430x461x only)
• 16-Bit Timer_A With Three Capture/Compare Registers
• 16-Bit Timer_B With Seven Capture/Compare-With-Shadow Registers
• On-Chip Comparator
• Supply Voltage Supervisor/Monitor With Programmable Level Detection
• Basic Timer With Real Time Clock Feature
• Integrated LCD Driver up to 160 Segments With Regulated Charge Pump
• Serial Communication Interface (USART1), Select Asynchronous UART or
  Synchronous SPI by Software
• Universal Serial Communication Interface
  • Enhanced UART Supporting Auto-Baudrate Detection
  • IrDA Encoder and Decoder