fast vad skillnaden är gentemot 7221 vet jag inte.
http://www.futureelectronics.com/en/Sea ... 4294900562
Edit:
The Intersil ICM7228 is an alternative to both the Maxim
ICM7218 and the Intersil ICM7218 display drivers. Notice that
the ICM7228A/B has an additional single digit access mode.
This could make the Intersil ICM7218A/B software incompatible
with ICM7228A/B operation.