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CHAPTER 4 I/O PORTS
4.5 Port 5
Port 5 is a general-purpose I/O port and may also serve the input/output for peripherals.
The pins of this port can be used for peripherals or normal port function that can be
selected according to the setting of the bit corresponding to the pin on a specific
register.
This section explains the general-purpose I/O function of the port.
This section also describes port 5 concerning to the structure, pins, a block diagram of
pins, and associated registers.
■ Structure of Port 5
Port 5 comprises the following four elements:
• General-purpose I/O pins (P50/PWM)
• Port 5 data register (PDR5)
• Port 5 data direction register (DDR5)
• Port 5 pull-up setting register (PUL5)
■
Pins of Port 5
Port 5 has one CMOS I/O pin.
Table 4.5-1 provides information on the pin of port 5.
For circuit type, see Section "1.7 Pin Functions Description " and "1.8 I/O Circuit Types ".
Table 4.5-1 Pin of Port 5
Port
name
Pin name Function
Peripherals for which the
pin may serve
Input and output
form
Circuit
type
Input Output
Port 5 P50/PWM
P50 general-
purpose I/O
PWM (8-bit PWM/timer
output)
CMOS CMOS E