CHAPTER 11 WATCHDOG TIMER FUNCTIONS
User’s Manual U16896EJ2V0UD
349
11.1.2 Configuration
Watchdog timer 1 consists of the following hardware.
Table 11-1. Configuration of Watchdog Timer 1
Item Configuration
Control registers
Watchdog timer clock selection register (WDCS)
Watchdog timer mode register 1 (WDTM1)
11.1.3 Registers
The registers that control watchdog timer 1 are as follows.
•
Watchdog timer clock selection register (WDCS)
•
Watchdog timer mode register 1 (WDTM1)
(1) Watchdog timer clock selection register (WDCS)
This register sets the overflow time of watchdog timer 1 and the interval timer.
The WDCS register can be read or written in 8-bit or 1-bit units.
Reset sets this register to 00H.
0
WDCS
0
0
0
0
WDCS2
WDCS1
WDCS0
2
13
/f
XW
2
14
/f
XW
2
15
/f
XW
2
16
/f
XW
2
17
/f
XW
2
18
/f
XW
2
19
/f
XW
2
21
/f
XW
WDCS2
0
0
0
0
1
1
1
1
Overflow time of watchdog timer 1/interval timer
WDCS1
0
0
1
1
0
0
1
1
WDCS0
0
1
0
1
0
1
0
1
4 MHz
10 MHz
5 MHz
2.048 ms
4.096 ms
8.192 ms
16.38 ms
32.77 ms
65.54 ms
131.1 ms
524.3 ms
1.638 ms
3.277 ms
6.554 ms
13.11 ms
26.21 ms
52.43 ms
104.9 ms
419.4 ms
0.819 ms
1.638 ms
3.277 ms
6.554 ms
13.11 ms
26.2 ms
52.43 ms
209.7 ms
f
XW
After reset: 00H R/W Address: FFFFF6C1H
Remark
f
XW
= f
X
: Watchdog timer 1 clock frequency
Содержание V850ES/KE1+
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