MSP430FR5992: Digitally Controlled Oscillator (DCO) power consumption

Hi

Due to the DCO power consumption is related with frequency and you just need to care the active mode you can refer to the table in the datasheet page29.

Best regards

Gary

Not really. I'm trying to decide on 2 things:
Using either MODOSC or DCO to drive SMCLK to peripherals in LPM0 or LPM1.
Using either MODOSC or DCO to drive MCLK in active mode. The program runs in fixed time interval instead of fixed number of instructions.

So the oscillator power, not CPU cycles, determines total energy consumption.
The datasheet provides total power consumption in active mode and LPM0-1 with DCO as clock source, which isn't helpful here. The needed information would be either:
total power with MODOSC used as clock source and DCO disabled,
or
DCO power consumption vs. frequency.

Hi 

Sorry we don't have that data. All the data we tested are in the datasheet. 

In my opinion, the MODOSC will cost lower power. To get a real consumption I think you would better to have a test.

Best regards

Gary