CHAPTER 6 16-BIT TIMER/EVENT COUNTER
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User’s Manual U11302EJ4V0UM
(4) Port mode register 3 (PM3)
This register sets port 3 input/output in 1-bit units.
When using the P30/TO0 pin for timer output, set PM30 and the output latch of P30 to 0.
PM3 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets PM3 to FFH.
Figure 6-7. Format of Port Mode Register 3
PM3
6
5
4
3
2
Symbol
1
0
PM37
PM3n
P3n pin I/O mode selection (n = 0 to 7)
0
1
Output mode (output buffer on)
Input mode (output buffer off)
FF23H
PM36 PM35 PM34 PM33 PM32 PM31 PM30
7
Address
After reset
R/W
FFH
R/W
Содержание mPD780204
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