UPD78F0411GA-GAM-AX Datasheet, PDF (230/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50, 51, AND 52
(4) Port mode registers 3 (PM3)
These registers set port 3 input/output in 1-bit units.
When using the P34/TI52/TI010/TO00/RTC1HZ/INTP1 pins for timer input, set PM34 to 1. The output latch of
PM34 at this time may be 0 or 1.
PM3 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets these registers to FFH.
Figure 7-13. 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
1
PM34
PM33
PM32
PM31
1
PM3n
0
1
P1n pin I/O mode selection (n = 1 to 4)
Output mode (output buffer on)
Input mode (output buffer off)
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User’s Manual U18698EJ1V0UD