upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 95

• Manufacturer Part Number: upd78f0114m6gb-8es
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

4.3 Registers Controlling Port Function
(1) Port mode registers (PM0, PM1, PM3, PM6, PM7, and PM12)
Symbol
PM12
Port functions are controlled by the following three types of registers.
• Port mode registers (PM0, PM1, PM3, PM6, PM7, PM12)
• Port registers (P0 to P3, P6, P7, P12, P13)
• Pull-up resistor option registers (PU0, PU1, PU3, PU7, PU12)
PM0
PM1
PM3
PM6
PM7
These registers specify input or output mode for the port in 1-bit units.
These registers can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets these registers to FFH.
When port pins are used as alternate-function pins, set the port mode register and output latch as shown in Table
4-5.
PM17
PMmn
7
1
7
7
1
7
1
7
1
7
1
0
1
Output mode (output buffer on)
Input mode (output buffer off)
PM16
6
1
6
6
1
6
1
6
1
6
1
PM15
5
1
5
5
1
5
1
5
1
5
1
Figure 4-16. Format of Port Mode Register
PM14
4
1
4
4
1
4
1
4
1
4
1
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16227EJ3V0UD
PM13
PM33
PM63
PM73
3
1
3
3
3
3
3
1
(m = 0, 1, 3, 6, 7, 12; n = 0 to 7)
Pmn pin I/O mode selection
PM12
PM32
PM62
PM72
2
1
2
2
2
2
2
1
PM01
PM11
PM31
PM61
PM71
1
1
1
1
1
1
1
PM120
PM00
PM10
PM30
PM60
PM70
0
0
0
0
0
0
Address
FF2CH
FF20H
FF21H
FF23H
FF26H
FF27H
After reset
FFH
FFH
FFH
FFH
FFH
FFH
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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