CHAPTER 4 PORT FUNCTIONS
Figure 4-18. Format of Port Mode Register
Symbol
PM0
7
1
6
1
5
1
4
1
3
2
1
0
Address
FF20H
After reset
FFH
R/W
R/W
PM03 PM02 PM01 PM00
PM1
PM2
1
1
1
1
1
1
1
1
1
PM13 PM12 PM11 PM10
FF21H
FF22H
FF23H
FF25H
FF27H
FF28H
FFH
FFH
FFH
FFH
FFH
FFH
R/W
R/W
R/W
R/W
R/W
R/W
PM26 PM25 PM24 PM23 PM22 PM21 PM20
1
1
1
1
1
1
1
1
1
1
1
1
PM33 PM32 PM31 PM30
PM53 PM52 PM51 PM50
PM3
PM5
1
1
PM72 PM71 PM70
PM7
PM8Note
1
PM81 PM80
PM9Note
PM97 PM96 PM95 PM94 PM93 PM92 PM91 PM90
FF29H
FFH
R/W
PMmn
Pmn pin input/output mode selection
(m = 0 to 3, 5, 7 to 9, n = 0 to 7)
0
1
Output mode (output buffer ON)
Input mode (output buffer OFF)
Note Incorporated only in the µPD789426 and 789436 Subseries.
User’s Manual U15075EJ1V0UM00
97
NEC [ NEC ]
