NEC PD703114 User Manual page 547

12.1 Features
• Input-only ports:
I/O ports:
• 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 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.
CHAPTER 12 PORT FUNCTIONS
6
47
P00
P05
P10
P12
P20
P27
P30
P34
P40
P42
User's Manual U15195EJ5V0UD
PDH0
Port DH
PDH5
PDL0
Port DL
PDL15
PCT0
PCT1
Port CT
PCT4
PCT6
PCM0
Port CM
PCM1
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