I need to connect 4 MAX7219 chips (to drive 2 bicolor 8x8 LED Matricies). Do I need to put pair of decoupling capacitors (ceramic and polarized) near each IC or one pair will be enough for 4? I had no issues using 1 pair for 2 chips, but not sure what will happen if I use 4. I'm basing my design on…

MAX7219 in daisy chain. How many decop capacitors I need?

bratan November 6, 2012, 5:05pm 3

CrossRoads:
1 pair each. Lot of current draw in each part, caps add local current buffering.

Thank you!