MSP430F2274TRHAR datasheet by Texas Instruments

MSP430F2274TRHAR Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the internal oscillator?
  The maximum clock frequency that can be used with the internal oscillator is 16 MHz. However, it's recommended to use a clock frequency of 12 MHz or less to ensure reliable operation.
• How do I configure the MSP430F2274TRHAR for low-power operation?
  To configure the MSP430F2274TRHAR for low-power operation, set the CPU to low-power mode (LPM3 or LPM4) using the BCSCTL1 register. Additionally, disable any unused peripherals and set the clock frequency to the lowest required value.
• What is the maximum current that can be sourced or sunk by the GPIO pins?
  The maximum current that can be sourced or sunk by the GPIO pins is 4 mA. However, it's recommended to limit the current to 2 mA or less to ensure reliable operation.
• How do I use the built-in temperature sensor?
  The built-in temperature sensor can be enabled by setting the TMPEN bit in the ADC12CTL0 register. The temperature sensor output can be read using the ADC12MEM0 register. The temperature value can be calculated using the formula: Temperature (°C) = (ADC12MEM0 - 673) / 2.5.
• What is the purpose of the JTAG pins, and how do I use them?
  The JTAG pins (TCK, TMS, TDI, and TDO) are used for debugging and programming the device using a JTAG interface. To use the JTAG pins, connect a JTAG debugger or programmer to the device, and use the corresponding software to program or debug the device.