Resistor for AS1106 (also known as MAX7221)

I am having trouble finding the right resistor for my 7 segment controller. I am using the AS1106 which is identical to the MAX7221 and have 7 Segment displays that have a forward voltage of 2-2,6 V at 20mA - Now is it correct that I need a 231 Ohm resistor for them at ISET? what would be the best? Thanks for your help :)


It would be best to choose the closest value to this you can get and not worry about not driving the LEDs to exactly 20mA.

ok ... so i'll use 2 100 OHM that should be ok... thanks for your help.... ;)

What's wrong with a 220R resistor, that is a standard value.