The maximum clock frequency of the MSP430F2274IRHAR is 16 MHz.
To configure the MSP430F2274IRHAR for low power consumption, use the low-power modes (LPM3, LPM4) and adjust the clock frequency, disable unused peripherals, and use the built-in brown-out reset (BOR) feature.
Yes, the MSP430F2274IRHAR can operate with a 3.3V power supply, but it is recommended to use a voltage regulator to ensure a stable voltage supply.
The MSP430F2274IRHAR can be programmed using the Texas Instruments Code Composer Studio (CCS) or IAR Embedded Workbench development environments, or using the MSP430 Flash Emulation Tool (FET).
The maximum current consumption of the MSP430F2274IRHAR is approximately 2.5 mA at 16 MHz and 3.3V.
MSP430F2274IRHAR datasheet
by Texas Instruments
