NEC NEC PD78081(A), User Manual

Page: 88 / 274

65
CHAPTER 4 PORT FUNCTIONS
Figure 4-10. Port Mode Register Format
PM0
PM1
1 1 PM03 PM02 PM01 1
7 6 5 4 3 2 1 0 Symbol
PM3
PM5
FF20H
FF21H
FF23H
FF25H
FFH
FFH
FFH
FFH
R/W
R/W
R/W
R/W
Address
After
Reset R/W
PM17 PM16 PM15 PM14 PM13 PM12 PM11 PM10
PM37 PM36 PM35 PM34 PM33 PM32 PM31 PM30
PM57 PM56 PM55 PM54 PM53 PM52 PM51 PM50
PM7
FF27H FFH R/W
1 1 1 1 1 PM72 PM71 PM70
1 1
PM10
PMmn
Pmn Pin Input/Output Mode Selection
(m = 0, 1, 3, 5, 7, 10 : n = 0 to 7)
0
1
Output mode (output buffer ON)
Input mode (output buffer OFF)
FF2AH FFH R/W 1 1 1 1 1 1 PM101 PM100
Caution Set 1 to the bits 0, 4 to 7 of PM0, bits 3 to 7 of PM7 and bits 2 to 7 of PM10.