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CHAPTER 2 PIN FUNCTIONS
User
’
s Manual U15017EJ2V0UD
2.3 Pin I/O Circuits and Connections of Unused Pins
The I/O circuit type of each pin and recommended connections of unused pins are shown in Table 2-1.
For the configuration of each I/O circuit type, refer to Figure 2-1.
Table 2-1. Types of Pin I/O Circuits and Recommended Connection of Unused Pins
Pin Name
I/O Circuit Type
I/O
Recommended Connection of Unused Pins
P00/ANI8 to P03/ANI11
9
Input
Connect to V
DD0
or V
SS0
P10/ANI0 to P17/ANI7
P20/TI00
8-C
I/O
Input:
Independently connect to V
SS0
via a
resistor
Output: Leave open
P25/SI0/R
X
D0
P26/SO0/T
X
D0
5-H
P27/SCK0/ASCK0
8-C
P40 to P47
5-H
P60/SI1
8-C
P61/SO1
5-H
P62/SCK1
8-C
P63/TIO50
P64/INTP0
P65/INTP1
P66/TIO51
P67/INTP2
Mask ROM version
P50 to P54, P55/SI2, P56/SO2,
P57/SCK2
13-J
I/O
Input:
Independently connect to V
DD0
via a
resistor
Output: Leave open
P70/FIP16 to P77/FIP23
15-F
I/O
Input:
Independently connect to V
SS0
via a
resistor
Output: Leave open
P80/FIP24 to P87/FIP31
P90/FIP32 to P97/FIP39
P100/FIP40 to P107/FIP47
14-F
Output
Leave open
IC
—
—
Directly connect to V
SS1
μ
PD78F4976A
P50 to P54, P55/SI2, P56/SO2,
P57/SCK2
13-K
I/O
Input:
Independently connect to V
DD0
via a
resistor
Output: Leave open
P70/FIP16 to P77/FIP23
15-E
I/O
Input:
Independently connect to V
SS0
via a
resistor
Output: Leave open
P80/FIP24 to P87/FIP31
P90/FIP32 to P97/FIP39
P100/FIP40 to P107/FIP47
14-E
Output
Leave open
V
PP
—
—
Directly connect to V
SS1
FIP0 to FIP15
14-C
Output
Leave open
RESET
2
Input
—
AV
DD
—
—
Connect to V
DD1
or V
SS1
AV
SS
Connect to V
SS1
V
LOAD