The maximum clock frequency of the MSP430F5359IPZR is 25 MHz.
To configure the MSP430F5359IPZR for low power consumption, use the low-power modes (LPM3, LPM4) and adjust the clock frequency, disable unused peripherals, and use the Power Management Module (PMM) to control power consumption.
Yes, the MSP430F5359IPZR can be used with an external crystal oscillator. The device has an internal oscillator that can be used, but an external crystal oscillator can provide better accuracy and stability.
The MSP430F5359IPZR can be programmed using the Texas Instruments Code Composer Studio (CCS) integrated development environment (IDE) or other third-party development tools. The device can be programmed using the JTAG or Spy-Bi-Wire interfaces.
The MSP430F5359IPZR has 512 KB of flash memory available for program storage.