502
Chapter 15
Watchdog Timer (WDT)
Preliminary User’s Manual U17566EE1V2UM00
(1)
WDCS - WDT clock selection register
The 8-bit WDCS register is used to specify the running time of the Watchdog
Timer.
Access
This register can be read/written in 8-bit or 1-bit units.
Writing to this register is protected by a special sequence of instructions.
Please refer to
“WCMD - WDT command protection register“ on page 505
for
details.
Address
<base>
Initial Value
07
H
. This register is initialized by SYSRESWDT and SYSRES.
Note
The WDCS register must be considered in conjunction with the WCC register
of the Clock Generator. The source and frequency of WDTCLK are defined in
the WCC register.
7
6
5
4
3
2
1
0
WDCS2
WDCS1
WDCS0
R
R
R
R
R
R/W
R/W
R/W
Table 15-3
WDCS register contents
Bit Position
Bit Name
Function
2 to 0
WDCS[2:0]
Specifies the running time of the Watchdog Timer
WDCS2
WDCS1
WDCS0
Running time calculation
0
0
0
2
13
/ f
WDTCLK
0
0
1
2
14
/ f
WDTCLK
0
1
0
2
15
/ f
WDTCLK
0
1
1
2
16
/ f
WDTCLK
1
0
0
2
17
/ f
WDTCLK
1
0
1
2
18
/ f
WDTCLK
1
1
0
2
19
/ f
WDTCLK
1
1
1
2
20
/ f
WDTCLK
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