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CHAPTER 4 I/O PORTS
4.7 Port 7
Port 7 is a general-purpose I/O port.
This section describes the port function when operating as general-purpose I/O port.
This section also describes the port structure, pins, the pin block diagram associated
registers of port 7.
■ Structure of Port 7
Port 7 comprises the following four elements:
• General-purpose I/O pin (P70 to P72)
• Port 7 data register (PDR7)
• Port 7 data direction register (DDR7)
• Port 7 pull-up setting register (PUL7)
■
Pins of Port 7
Port 7 has 3 CMOS I/O pin.
Table 4.7-1 lists the pins of port 7.
For circuit type, see Section "1.7 Pin Functions Description " and "1.8 I/O Circuit Types ".
Table 4.7-1 Pins of Port 7
Port name Pin name Function
Input and output form
Circuit
type
Input Output
Port 7 P70 to P72 General-purpose I/O CMOS CMOS E