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Preliminary User’s Manual U16035EJ1V0UM
CHAPTER 8 WATCH TIMER
8.1 Functions of Watch Timer
The watch timer has the following functions.
• Watch timer
• Interval timer
The watch timer and the interval timer can be used simultaneously.
Figure 8-1 shows the watch timer block diagram.
Figure 8-1. Block Diagram of Watch Timer
f
X
/2
7
f
XT
f
W
f
W
2
4
f
W
2
5
f
W
2
6
f
W
2
7
f
W
2
8
f
W
2
9
Clear
9-bit prescaler
Clear
5-bit counter
INTWT
INTWTI
WTM7 WTM6 WTM5 WTM4 WTM1 WTM0
Watch timer operation
mode register (WTM)
Internal bus
Selector
Selector
