The maximum clock frequency of the MSP430F6635IPZR is 20 MHz.
The MSP430F6635IPZR has 128 KB of flash memory.
Yes, the MSP430F6635IPZR can operate at 3.3V, but it can also operate at 1.8V to 3.6V.
No, the MSP430F6635IPZR does not have a built-in USB interface. However, it has a universal serial communication interface (USCI) that can be used to implement a USB interface with an external transceiver.
The MSP430F6635IPZR has 12-channel, 10-bit analog-to-digital converters (ADCs).