I want to use LCD driver pins to light up LEDs instead of using LCD screen. This is done on a broken device so altering other pins is not possible for this case. Is this safe to CPU to connect just with limiting resistor or should I use a transistor driver for it? If so, are there any IC's to do this to avoid having a bunch load of transistors on board.
I am using EFM32 Gecko for this. https://www.silabs.com/products/mcu/32-bit/efm32-gecko