MSP430F6634IPZR datasheet by Texas Instruments

MSP430F6634IPZR 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 8 MHz. However, it's recommended to use a clock frequency of 4 MHz or less to ensure reliable operation.
• How do I configure the device to use an external crystal oscillator?
  To configure the device to use an external crystal oscillator, you need to set the XT2OFF bit in the SYSCTL_DCGC2 register to 0, and then select the desired crystal frequency using the XT2Sx bits in the SYSCTL_CSCTL2 register.
• What is the minimum voltage required for the device to operate in low-power mode?
  The minimum voltage required for the device to operate in low-power mode is 1.8 V. However, the device can operate down to 1.4 V in low-power mode 3 (LPM3) and 1.2 V in low-power mode 4 (LPM4).
• How do I enable the brown-out reset (BOR) feature?
  To enable the brown-out reset (BOR) feature, you need to set the BORCTL bit in the SYSCTL_BORCTL register to 1. You can also configure the BOR threshold voltage using the BORTVx bits in the same register.
• What is the maximum current that can be sourced or sunk by a GPIO pin?
  The maximum current that can be sourced or sunk by a GPIO pin is 4 mA. However, it's recommended to limit the current to 2 mA or less to ensure reliable operation.