NEC PD78F9488 - Manual (Page 87)

CHAPTER 4 PORT FUNCTIONS
User’s Manual U15331EJ4V1UD
87
4.2.6 Port 6
This is an 8-bit input-only port.
This port is also used for the analog input of an A/D converter and key return signal input
Note .
Figure 4-12 shows a block diagram of port 6.
Note µPD789489 and 78F9489 only.
Figure 4-12. Block Diagram of P60 to P67 (1/2)
(a) When µPD789488,78F9488 is used
V REF
RD
A/D converter
P60/ANI0 to P67/ANI7 +
−
Internal bus