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CHAPTER 8 8-BIT TIMER/EVENT COUNTERS 50, 51
User’s Manual U15798EJ2V0UD
(3) Port mode register 3 (PM3)
This register sets port 3 input/output in 1-bit units.
When using the P33/TO50/TI50 and P32/TO51/TI51 pins for timer output, set PM33, PM32 and the output latches
of P33 and P32 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.
Figure 8-6. Format of Port Mode Register 3 (PM3)
Address: FF23H After reset: FFH R/W
Symbol
7
6
5
4
3
2
1
0
PM3
1
1
PM35
PM34
PM33
PM32
PM31
PM30
PM3n
P3n pin I/O mode selection (n = 0 to 5)
0
Output mode (output buffer ON)
1
Input mode (output buffer OFF)
Содержание mPD780344 Series
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