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.
To configure the MSP430F2101IDW to use an external crystal oscillator, you need to connect the crystal to the XIN and XOUT pins, and then configure the UCSCTL6 register to select the external crystal oscillator as the clock source.
The minimum voltage required for the MSP430F2101IDW to operate is 1.8V. However, it's recommended to operate the device at a voltage of 2.2V or higher to ensure reliable operation.
To use the built-in UART module on the MSP430F2101IDW, you need to configure the UCAxCTL0 and UCAxCTL1 registers to set the baud rate, data bits, and stop bits. You also need to enable the UART module by setting the UCAxCTL0.UCAEN bit.
The maximum current that can be sourced or sunk by the GPIO pins on the MSP430F2101IDW is 4mA. However, it's recommended to limit the current to 2mA or less to ensure reliable operation.
MSP430F2101IDW datasheet
by Texas Instruments
