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(5) Port mode register 3 (PM3)
This register sets port 3 input/output in 1-bit units.
When using the P34/TI01/TO00 pin for timer output, set PM30 and the output latch of P30 to 0.
PM3 is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets the value of this register to FFH.
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CHAPTER 6 16-BIT TIMER/EVENT COUNTER 0
Figure 6-6. Format of Port Mode Register 3 (PM3)
Address: FF23H
After reset: FFH
Symbol
7
6
5
PM3
1
1
PM35
PM34
PM3n
P3n pin I/O mode selection (n = 0 to 5)
0
Output mode (output buffer ON)
1
Input mode (output buffer OFF)
User's Manual U15798EJ2V0UD
R/W
4
3
2
1
0
PM33
PM32
PM31
PM30
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