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8.1 Watch Timer Functions
The watch timer has the following functions.
• Watch timer
• Interval timer
The watch and interval timers can be used at the same time.
Figure 8-1 shows a block diagram of the watch timer.
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CHAPTER 8 WATCH TIMER
Figure 8-1. Block Diagram of Watch Timer
Clear
9-bit prescaler
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WTS
Watch timer interrupt
time selection
register (WTIM)
User's Manual U15331EJ4V1UD
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WTM7
WTM6 WTM5 WTM4 WTM1 WTM0
Watch timer mode
control register (WTM)
Internal bus
5-bit counter
INTWT
Clear
INTWTI
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