CHAPTER 7 8-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 P31/TO1 and P32/TO2 pins for timer output, set PM31, PM32, and the output latches of
P31 and P32 to 0.
PM3 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets PM3 to FFH.
Figure 7-7. Format of Port Mode Register 3
7
6
5
4
3
2
1
0
PM37 PM36 PM35 PM34 PM33 PM32 PM31 PM30
Symbol
PM3
Address
FF23H
After reset
FFH
R/W
R/W
PM3n
0
1
P3n pin I/O mode selection (n = 0 to 7)
Output mode (output buffer on)
Input mode (output buffer off)
Содержание mPD780208 Subseries
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