topic Enable/disable Analog Compare MKE02 in Kinetis Microcontrollers

Enable/disable Analog Compare MKE02

phamtrieu — Sat, 10 Mar 2018 02:18:54 GMT

I'm using MKE02 MCU on my board. I init ACMP(analog compare) and it runs. But i want to disable/enable ACMP by clear/set ACMPx_SC[ACE] when MCU is running. What happen when i do that?

Thanks.

Sorry, my English is not good.

Re: Enable/disable Analog Compare MKE02

Robin_Shen — Tue, 13 Mar 2018 03:34:36 GMT

If you disable ACMP by clear ACMPx_SC[ACE] , then the function of this module will not work anymore.

For example:

1. It will not generate interrupt according to the voltage of input(external signal or 6-bit DAC output).

2. The ACMP0 output capture function will be disabled.

3. FTM2 three PWM synchronization function will be affected due to it was the Trigger0 of FTM2.

4. FTM2 fault function will be affected due to Fault 0 is connected to ACMP0 output.

5. Then UART0_RX filter using ACMP0 will be disabled.

6. The wakeup function by ACMP will be affected.

Best Regards,

Robin

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Re: Enable/disable Analog Compare MKE02

phamtrieu — Fri, 16 Mar 2018 03:49:37 GMT

thanks for your reply.

But, i do not use that feature which use ACMP output. I only use interrupt of ACMP.

I want to ask that: when i enable module ACMP, could it make i interrupt or something without signal to ACMP chanel?