Hi to everyone,
I am new to this forum and began working on FW a few months ago. So excuse me in advance if I am not that expert.
I am testing the FW in a TM4C129 uP.
In this project Power is handled as follows:
VDD is powered to 3.3 V dc through a power supply of 24 V dc; in case the 24v dc goes down, a battery guarantees the 3.3 V.
VDDA s powered to 3.3 V dc through a power supply of 24 V dc; it is not battery backed up.
In case 24v goes down, VDD stays stable to 3.3 V thanks to battery while VDDA goes down.
What I expect is digital circuitry functions normally, GPIO output pin included.
Am I wrong?
This question comes from the fact that I need an enable output pin (general GPIO pin PF0 set as an output pin) to stays high (3.3V) while 24V goes down.
