I have an LCD display that requires it's /RST pin be low briefly on power up. For testing I've controlled it with a pull-down resistor and an I/O pin from the processor. But I would like to save that pin, if possible, so I wired a simple RC circuit to reset the LCD:
VCC --- R ------ C ---- GND | /RST
It works okay, but when I turn off the power there are frequently visible glitches on the screen in the form of horizontal lines. Now maybe this doesn't matter that much but it points to something not being quite right.
Is using a simple circuit like this for reset a bad idea? Or can I improve it without adding a boatload of components?