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.

Typical applications for this device include portable medical applications and e-meter applications.

• 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
  • Synchronous SPI
  • I2C™
• Serial Onboard Programming, Programmable Code Protection by Security Fuse
• Brownout Detector
• Family Members Include:
  • MSP430x4616, MSP430x46161(1):
    • 92KB+256B Flash or ROM Memory
    • 4KB RAM
  • MSP430x4617, MSP430x46171(1):
    • 92KB+256B Flash or ROM Memory
    • 8KB RAM
  • MSP430x4618, MSP430x46181(1):
    • 116KB+256B Flash or ROM Memory
    • 8KB RAM
  • MSP430x4619, MSP430x46191(1):
    • 120KB+256B Flash or ROM Memory
    • 4KB RAM
• For Complete Module Descriptions, Refer to the MSP430x4xx Family User’s Guide

(1) The MSP430F461x1 devices are identical to the MSP430F461x devices, with the exception that the ADC12 module is not implemented.