UPD78F0138 NEC, UPD78F0138 Datasheet - Page 90

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

4.1 Port Functions
supplies and the pins is shown below.
The functions of each port are shown in Table 4-2.
alternate functions, refer to CHAPTER 2 PIN FUNCTIONS.
90
There are two types of pin I/O buffer power supplies: AV
78K0/KE1 products are provided with the ports shown in Figure 4-1, which enable variety of control operations.
In addition to the function as digital I/O ports, these ports have several alternate functions. For details of the
Port 12
Port 13
Port 14
Port 5
Port 6
Port 7
AV
EV
Power Supply
REF
DD
Table 4-1. Pin I/O Buffer Power Supplies
CHAPTER 4 PORT FUNCTIONS
P50
P53
P60
P63
P70
P77
P120
P130
P140
P141
User’s Manual U16228EJ2V0UD
Figure 4-1. Port Types
P20 to P27
Port pins other than P20 to P27
Corresponding Pins
REF
and EV
DD
P00
P06
P10
P17
P20
P27
P30
P33
P40
P43
. The relationship between these power
Port 0
Port 1
Port 2
Port 3
Port 4