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Hi Champs,
We would like to confirm if FR5/FR2x series able to wake up by ADC interrupt at LPM3.
According to FR5869 data sheet table 6-1 operation mode, wake up event LPM3 is only describe "LF,I/O,Comp". but, FR2x same operation mode table discribe at wake up event LPM3 is "all". So, is this mean that FR2x is able to use ADC interrupt. but, FR5x didn't use it.
My understanding ADC interrupt need work slow ADC at LPM3. MSP430F series use to have "DTC" module.
But, both of FR2x and FR5x didn't have "DTC" module. So, I think both device can't use ADC interrupt.
But, FR2x operation table wake up event describe "all" at LPM3. What is this difference between FR5x and FR2x wake up event on the LPM3 ?
I confused it.
Regards,
Kz777
Hi Kz777,
It should be okay to work in LPM3 with ADC12.
I check the datasheet table 6-1, wake up event description "LF" should represent "Peripherals in low-frequency state". You can find in the table that the peripherals in low-frequency state can work in LPM3.
In the table 6-2, it shows ADC12_B can work in low-frequency state when clocked by ACLK.
You can also find the FR5869 code example msp430fr59xx_adc12_11.c is showing ADC12 works in LPM3 as normal mode.
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