NEC PD78F9488 - Manual (Page 45)

CHAPTER 2 PIN FUNCTIONS
User’s Manual U15331EJ4V1UD
45
2.3 Pin I/O Circuits and Recommended Connection of Unused Pins
The I/O circuit type of each pin and recommended connection of unused pins are shown in Table 2-1.
For the I/O circuit configuration of each type, see Figure 2-1.
Table 2-1. Types of Pin I/O Circuits (1/2)
Pin Name I/O Circuit Type I/O Recommended Connection of Unused Pins
P00/KR0 to P07/KR7 Note 1
P00/KR00 to P07/KR07 Note 2
8-A
P10, P11 5-A
P20/SCK20/ASCK20 8-A
P21/SO20/TxD20 5-A
P22/SI20/RxD20
P23/SCK10
8-A
P24/SO10 5-A
P25/SI10
Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
P30/INTP0/TO50/
TMI60
P31/INTP1/TO60
P32/INTP2/TO61/
TMI61
P33/INTP3/CPT20/
TO20
P34 Note 1
P34/RIN Note 2
8-A
Input: Independently connect to V
SS
via a resistor.
Output: Leave open.
P50 to P53
(mask ROM version) 13-W
P50 to P53
(flash memory version) 13-V
I/O
Input: Independently connect to V
DD
via a resistor.
Output: Leave open.
P60/ANI0 to P67/ANI7 Note 1
P60/ANI0/KR10 to
P67/ANI7/KR17
Note 2
9-C
P70 to P73 Note 3 2-H
Input Connect to V
DD
or V
SS
.
P80 to P87 Note 3 5-K I/O Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
COM0 to COM3 18
S0 to S15
S16 to S19 Note 4
S20 to S27 Note 4
17
Output
CAPH, CAPL
V
LC0
to V
LC2
Leave open.
AV
DD
Connect directly to V
DD
AV
SS
– –
Connect directly to V
SS
Notes 1. When µPD789488, 78F9488 is used.
2. When µPD789489, 78F9489 is used.
3. Only when port pin is selected by mask option or port function register.
4. Only when segment output pin is selected by mask option or port function register.