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CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50 AND 51
Preliminary User’s Manual U16035EJ1V0UM
(3) Port mode register 7 (PM7)
This register sets port 7 input/output in 1-bit units.
When using the P72/TO50/TI50 and P73/TI51/TO51 pins for timer output, set PM72, PM73, and output latches
of P72 and P73 to 0.
PM7 is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets PM7 to FFH.
Figure 7-6. Format of Port Mode Register 7 (PM7)
Address: FF27H After reset: FFH R/W
Symbol
7
6
5
4
3
2
1
0
PM7
1
1
PM75
PM74
PM73
PM72
PM71
PM70
PM7n
P7n pin I/O mode selection (n = 0 to 5)
0
Output mode (output buffer ON)
1
Input mode (output buffer OFF)