Renesas rl78 User Manual
RL78/G1A
CHAPTER 4 PORT FUNCTIONS
R01UH0305EJ0200 Rev.2.00
105
Jul 04, 2013
4.3.1 Port mode registers (PMxx)
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 signal generation sets these registers to FFH.
When port pins are used as alternate-function pins, set the port mode register by referencing 4.5 Register Settings
When Using Alternate Function.
Figure 4-1. Format of Port Mode Register
Symbol
7 6 5 4 3 2 1 0
Address
After
reset
R/W
PM0
1
PM06 PM05 PM04 PM03
PM02
PM01
PM00
FFF20H
FFH
R/W
PM1
1
PM16 PM15 PM14 PM13
PM12
PM11
PM10
FFF21H
FFH
R/W
PM2 PM27 PM26 PM25 PM24 PM23
PM22
PM21
PM20
FFF22H
FFH
R/W
PM3
1 1 1 1 1 1
PM31
PM30
FFF23H
FFH
R/W
PM4 1 1 1 1
PM43
PM42
PM41
PM40
FFF24H
FFH R/W
PM5
1 1 1 1 1 1
PM51
PM50
FFF25H
FFH
R/W
PM6 1 1 1 1
PM63
PM62
PM61
PM60
FFF26H
FFH R/W
PM7 PM77 PM76 PM75 PM74 PM73
PM72
PM71
PM70
FFF27H
FFH
R/W
PM12
1 1 1 1 1 1 1
PM120
FFF2CH
FFH
R/W
PM14
1 1 1 1 1 1
PM141
PM140
FFF2EH
FFH
R/W
PM15 1 1 1
PM154
PM153
PM152
PM151
PM150
FFF2FH FFH R/W
PMmn
Pmn pin I/O mode selection
(m = 0 to 7, 12, 14, 15; n = 0 to 7)
0
Output mode (output buffer on)
1
Input mode (output buffer off)
Caution Be sure to set bits that are not mounted to their initial values.
<R>
<R>