Fujitsu 8FX User Manual

MB95630H Series
MN702-00009-2v0-E FUJITSU SEMICONDUCTOR LIMITED 121
CHAPTER 9 WATCH PRESCALER
9.5 Register
[bit3:1] WTC[2:0]: Watch prescaler interrupt interval time select bits
These bits select the interval time.
[bit0] WCLR: Watch prescaler clear bit
This bit clears all bits in the counter of the watch prescaler to "1".
Note: When the output of the watch prescaler is selected as the count clock of the software watchdog timer,
clearing the watch prescaler with this bit also clears the software watchdog timer.
bit3:1
Details
Interval time
(Subclock, F
CL
= 32.768 kHz)
Interval time
(Sub-CR clock, F
CRL
= 100 kHz)
Writing "100"
2
10
× 2/F
CL
(62.5 ms) 2
10
× 2/F
CRL
(20.48 ms)
Writing "000"
2
11
× 2/F
CL
(125 ms) 2
11
× 2/F
CRL
(40.96 ms)
Writing "001"
2
12
× 2/F
CL
(250 ms) 2
12
× 2/F
CRL
(81.92 ms)
Writing "010"
2
13
× 2/F
CL
(500 ms) 2
13
× 2/F
CRL
(163.84 ms)
Writing "011"
2
14
× 2/F
CL
(1 s) 2
14
× 2/F
CRL
(327.68 ms)
Writing "101"
2
15
× 2/F
CL
(2 s) 2
15
× 2/F
CRL
(655.36 ms)
Writing "110"
2
16
× 2/F
CL
(4 s) 2
16
× 2/F
CRL
(1.311 s)
Writing "111"
2
17
× 2/F
CL
(8 s) 2
17
× 2/F
CRL
(2.621 s)
bit0 Details
Read access The read value is always "0".
Writing "0" Has no effect on operation.
Writing "1" Clears all bits in the counter of the watch prescaler to "1".

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English