Preliminary User’s Manual U17260EJ3V1UD
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CHAPTER 5 PORT FUNCTIONS
5.1 Port Functions
There are three types of pin I/O buffer power supplies: AV
REF
, EV
DD
, and V
DD
. The relationship between these
power supplies and the pins is shown below.
Table 5-1. Pin I/O Buffer Power Supplies
Power Supply
Corresponding Pins
AV
REF
P20 to P27
EV
DD
Port pins other than P20 to P27 and P121 to P124
V
DD
•
P121 to P124
•
Non-port pins
78K0/KE2 products are provided with the ports shown in Figure 5-1, which enable variety of control operations.
The functions of each port are shown in Table 5-2.
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 5-1. Port Types
Port
2
P20
P27
Port
3
P30
P33
Port 5
P50
P53
Port
0
P00
P06
Port
1
P10
P17
Port
4
P40
P43
Port
6
P60
P63
Port
7
P70
P77
P120
Port
12
Port
14
P140
P141
P130
Port
13
P124