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CHAPTER 3 PIN FUNCTIONS
Page 23 of 920
3.3
Connection of Unused Pins
Table 3 - 3 shows the Connection of Unused Pins.
Remark
For how to handle the ports other than the above, see
.
Table 3 - 3 Connection of Unused Pins
Pin Name
I/O
Recommended Connection of Unused Pins
P02 to P04
I/O
Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
P20 to P22
P31
P40/TOOL0
Input: Independently connect to V
DD
via a resistor, or leave open.
Output: Leave open.
P60 to P63
Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Set the port’s output latch to 0 and leave the pins open, or set the port’s output latch to
1 and independently connect the pins to V
DD
or V
SS
via a resistor.
P70 to P72, P75 to P77
Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
P80 to P82
P100
P120
P121 to P124
Input
Independently connect to V
DD
or V
SS
via a resistor.
P130
Output
Leave open.
P137
Input
Independently connect to V
DD
or V
SS
via a resistor.
P140 to P144
I/O
Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
P155, P156
Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
RESET
Input
Connect to V
DD
directly or via a resistor.
REGC
—
Connect to V
SS
via a capacitor (0.47 to 1
μ
F).
GPIO0/CLKOUT
I/O
Input: Leave open or independently connect to VCCDDC or VSSDDC via a resistor.
Output: Leave open.
GPIO1/ANTSELOUT0
GPIO2/ANTSELOUT1
GPIO3
GPIO4/ANTSW
<R>
Summary of Contents for RL78/G1H
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