l
Bus interface functions (external bus mode)
Including hold and ready functions
I/O ports: max. 53 channels
l
•
General-purpose I/O ports (N-ch open-drain) : 8
•
Output-only ports (N-ch open-drain):
•
General-purpose I/O ports (CMOS):
•
Output-only ports (CMOS):
•
Input-only ports:
MB89620 series
8
24
8
5
CHAPTER 1 OVERVIEW
3