Toshiba TLCS-900/H1 Series Data Book page 298

bit symbol WDTE
Read/Write
WDMOD
After reset
(1300H)
WDT
control
1: enable
Function
Bit symbol
WDCR
Read/Write
(1301H)
After reset
B1H: WDT disable code
Function
4EH: WDT clear code
7 6 5
WDTP1 WDTP0
R/W
1 0 0
Select detecting time
15
00: 2 /f
SYS
17
01: 2 /f
SYS
19
10: 2 /f
SYS
21
11: 2 /f
SYS
Figure 3.12.2. (1) Watchdog Timer Mode Register
7 6 5
Figure 3.12.2. (2) Watchdog Timer Control Register
92CH21- 294
4 3 2
I2WDT
0 0
Always IDLE2
fixed to 0: Stop
"0". 1: Operate
Watchdog timer out control

0
1 Connects WDT out to a reset
IDLE2 control
0 Stop
1 Operation
Watchdog timer detection time
16
00 2 /f (approximately 3.28ms @ fsys = 20MHz)
sys
18
01 2 /f (approximately 13.1ms @ fsys = 20MHz)
sys
20
10 2 /f (approximately 52.4ms @ fsys = 20MHz)
sys
22
11 2 /f (approximately 210ms @ fsys = 20MHz)
sys
Watchdog timer enable/disable control
0 Disabled
1 Enabled
4 3 2
−
W
−
WDT disable/clear control
B1H Disable code
4EH Clear code
Others Don't care
TMP92CH21
1 0
−
RESCR
R/W
0 0
1: Internally Always
connects write 0
WDT out
to the
reset pin
1 0