Monitoring VDDD without pin use | Cypress Semiconductor
Monitoring VDDD without pin use
I am short on available pins using the PRoC BLE module.
Is there a way to monitor my battery supply voltage without using an analog input pin like I can do on my PIC projects.
I see there is a 1.024 internal reference but do not see an obvious way to read it with respect to VDDD. Is there a way?
On my PIC projects I can do this so that, if I assume the reference is exactly 1.024, and if I get a reading of it with respect to VDDD, it is a simple matter to calculate current battery voltage and no pin is lost doing this.
If there is, is there a way to double scale the Vref before I read it with respect to VDDD?