I have a string of TLC5947's attached to an ATmega328p. There is a pin(Blank Pin) on the TLC5947 that disables output if it is high. Currently the first bit of code sets PD7 high in addition 10 a 10K resistor.
I want to have the TLC5947 blank pin high as the 328p is starting as the current draw with outputs on could stall the 328P before it executes the code.
Obviously the solution would be to have the TLC5947 Blank pin feed 5v from the board power, but I'm unsure as to the best way of configuring the Pin on the 328P such I can then bring the TLC5947 blank pin low.
I'm sure there's an obvious solution but it's escaping me at the moment.
Any help would be appreciated.