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MB95630H Series
9.2
Configuration
The watch prescaler consists of the following blocks:
• Watch prescaler counter
• Counter clear circuit
• Interval timer selector
• Watch prescaler control register (WPCR)
■ Block Diagram of Watch Prescaler
Watch prescaler counter (counter)
F
divided by 2
CL
F
divided by 2
CRL
SYCC:SCM[2:0]
Watchdog timer clear
Resets, or stops
subclock oscillation or
sub-CR clock oscillation
Interrupt
of watch
prescaler
F
: Subclock
CL
F
: Sub-CR clock
CRL
MN702-00009-2v0-E
Figure 9.2-1 Block Diagram of Watch Prescaler
2
1
2
2
2
3
2
4
Counter clear
SYCC2:SRDY,
SYCC2:SCRDY
WTIF
Watch prescaler control register (WPCR)
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER 9 WATCH PRESCALER
Software watchdog timer
2
5
2
6
2
7
2
8
2
9
2
10
Counter clear
circuit
WTIE
-
-
9.2 Configuration
2
11
2
12
2
13
2
14
2
15
2
16
Interval timer
selector
WTC2
WTC1 WTC0 WCLR
2
17
113
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