Tool/software:
Hi,
Kindly review the below schematic.
I have used the level converter to connect IO's and UART pins between 1.8V 4G module and 3.3.V STM32L452RE.
I hope I don't require Pull up resistor on the both A and B side of the Level converter. Please correct me if I am wrong. I would configure push-pull type on the STM32 firmware side. Does that ensure this schematyic works without an issue. or is it mandatory/safe to connect pullup resistor on all the A1 - A8 side and B1-B8 pins?
Thanks,
Praba