UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 158

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

5.5.2 Input/Output Mode/Control Mode Setting
mode is specified by means of the port 3 mode control register (PMC3) as shown in Figure 5-32.
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The port 3 input/output mode is set for each pin by means of the port 3 mode register (PM3) as shown in Figure 5-31.
In addition to their input/output port function, port 3 pins also have a dual function as various control signal pins, and the control
PM3
PM37
7
PM36
6
PM35
5
Figure 5-31 Port 3 Mode Register (PM3) Format
PM34
4
PM33
CHAPTER 5 PORT FUNCTIONS
3
PM32
2
PM31
1
PM30
0
PM3n
0FF23H
Address
0
1
P3n Pin Input/Output Mode
Specification (n = 0 to 7)
Output mode (output buffer on)
Intput mode (output buffer off)
On Reset
FFH
R/W
R/W