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User’s Manual U15195EJ5V0UD
CHAPTER 12 PORT FUNCTIONS
12.1 Features
• Input-only
ports: 6
I/O ports:
47
• Ports function alternately as I/O pins of other peripheral functions
• Input or output can be specified in bit units
12.2 Basic Configuration of Ports
The V850E/IA2 has a total of 53 on-chip I/O ports (ports 0 to 4, DH, DL, CT, CM), of which 6 are input-only ports.
The port configuration is shown below.
Port DH
P00
P05
P10
P12
P20
P27
P30
P34
P40
P42
PDH0
PDH5
PDL0
PDL15
PCT0
PCT1
PCT4
PCT6
PCM0
PCM1
Port DL
Port CT
Port CM
Port 0
Port 1
Port 2
Port 3
Port 4
(1) Functions of each port
The V850E/IA2 has the ports shown below.
Any port can operate in 8-bit or 1-bit units and can provide a variety of controls.
Moreover, besides its function as a port, each has functions as the I/O pins of on-chip peripheral I/O in control
mode.
Refer to
(3) Port block diagrams
for a block diagram of the block type of each port.