
User’s Manual U17894EJ9V0UD
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CHAPTER 4 PORT FUNCTIONS
4.1 Port Functions
There are five types of pin I/O buffer power supplies: AVREF0, AVREF1, EVDD0, EVDD1, and VDD. The relationship
between these power supplies and the pins is shown below.
Table 4-1. Pin I/O Buffer Power Supplies
Power Supply
Corresponding Pins
AVREF0
P20 to P27, P150 to P157
AVREF1
P110, P111
EVDD0, EVDD1
Port pins other than P20 to P27, P110, P111, P121 to P124, and P150 to P157
RESET and FLMD0 pins
VDD
P121 to P124
Non-port pins (excluding RESET and FLMD0 pins)
78K0R/KG3 products are provided with the ports shown in Figure 4-1, which enable variety of control operations.
The functions of each port are shown in Table 4-2.
In addition to the function as digital I/O ports, these ports have several alternate functions. For details of the
alternate functions, see CHAPTER 2 PIN FUNCTIONS.
Figure 4-1. Port Types
Port 0
P00
P06
Port 1
P10
P17
Port 3
P30
P31
P20
Port 2
P27
Port 7
P70
P77
P120
Port 12
P124
P40
Port 4
P47
Port 8
P80
P87
Port 11
P110
P111
Port 13
P130
P131
Port 14
P140
P145
Port 15
P150
P157
P50
Port 5
P57
P60
Port 6
P67