U18680EJ1V0PM00_15 Datasheet, PDF (11/30 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µ PD78F9221CS, 78F9222CS
1.3 Pin I/O Circuits and Connection of Unused Pins
Table 1-1 shows I/O circuit type of each pin and the connections of unused pins.
For the configuration of the I/O circuit of each type, refer to Figure 1-1.
Table 1-1. Types of Pin I/O Circuits and Connection of Unused Pins
Pin Name
P20/ANI0 to P23/ANI3
I/O Circuit Type
11
I/O
I/O
P30/TI000/INTP0
P31/TI010/TO00/INTP2
P34/RESET
P40
P41/INTP3
P42/TOH1
P43/TxD6/INTP1
P44/RxD6
P45
P121/X1
P122/X2
P123
8-A
2
8-A
16-B
8-A
Input
I/O
P130
AVREF
3-C
−
Output
Input
Recommended Connection of Unused Pin
Input: Independently connect to AVREF or VSS via a resistor.
Output: Leave open.
Input: Independently connect to VDD or VSS via a resistor.
Output: Leave open.
Connect to VDD via a resistor.
Input: Independently connect to VDD or VSS via a resistor.
Output: Leave open.
Input: Independently connect to VSS via a resistor.
Output: Leave open.
Input: Independently connect to VDD or VSS via a resistor.
Output: Leave open.
Leave open.
Directly connect to VDD.
Preliminary Product Information U18680EJ1V0PM00
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