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CHAPTER 15 WATCH TIMER
15.2.1
Timer Control Register
The timer control register starts and stops the Watch Timer, controls interrupts, and
sets the external output pins.
■ Timer Control Register (Lower)
Figure 15.2-2 Configuration of the Watch Timer Control Register (Lower)
bit
Address:
000060
H
R/W R/W R/W
R/W
:
Readable and writable
-
:
Undefined
:
Initial value
240
7
6
5
4
3
2
-
-
-
-
R/W
R/W R/W
1
0
WTCR
Initial value
0 0 0 X X 0 0 0
bit 0
ST
0
reset all counters and prescaler to "0"
1
start operation
bit 1
OE
0
use corresponding pin as general purpose I/O
1
set WOT to pin (Watch timer output)
bit 2
UPDT
0
no effect
1
Update counter with data values
bit 5
Reserved
0
1
bit6
Reserved
0
1
bit7
Reserved
0
1
B
Start bit
Output enable bit
Update bit
Reserved bit
-
-
Reserved bit
-
-
Reserved bit
-
-
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