UPD78F9500MA-CAC-A Datasheet, PDF (29/342 Pages) Renesas Technology Corp – 8-Bit Single-Chip Microcontrollers

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CHAPTER 2 PIN FUNCTIONS
2.3 Pin I/O Circuits and Connection of Unused Pins
Tables 2-1 and 2-2 show 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 2-1.
Table 2-1. Types of Pin I/O Circuits and Connection of Unused Pins (μPD78F920x)
Pin Name
P20/ANI0/TI000/TOH1
P21/ANI1/TI010/TO00/
INTP0
P22/ANI2/X2
P23/ANI3/X1
P32/INTP1
P34/RESET
P40 and P43
I/O Circuit Type
11
I/O
I/O
36
8-A
2
Input
8-A
I/O
Recommended Connection of Unused Pin
Input: Individually connect to VDD or VSS via resistor.
Output: Leave open.
Input: Individually connect to VSS via resistor.
Output: Leave open.
Input: Individually connect to VDD or VSS via resistor.
Output: Leave open.
Connect to VDD via resistor.
Input: Individually connect to VDD or VSS via resistor.
Output: Leave open.
Table 2-2. Types of Pin I/O Circuits and Connection of Unused Pins (μPD78F950x)
Pin Name
P20/TOH1
P21/INTP0
P22
P23/EXCLK
P32/INTP1
I/O Circuit Type
8-A
I/O
I/O
Recommended Connection of Unused Pin
Input: Individually connect to VDD or VSS via resistor.
Output: Leave open.
P34/RESET
P40 and P43
2-A
Input
Set ENPU34 to “1” on the option byte, and leave the pin open.
8-A
I/O
Input: Individually connect to VDD or VSS via resistor.
Output: Leave open.
User’s Manual U18172EJ3V0UD
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