Toshiba H1 SERIES TLCS-900 - Manual (Page 216)

TMP92CM22
2007-02-16 92CM22-214
7 6 5 4 3 2 1 0
Bit symbol WDTE WDTP1 WDTP0
− I2WDT
RESCR
−
WDMOD
(1300H)
Read/Write R/W R/W
After reset 1 0 0 0 0 0 0
Function WDT control
1: Enable
Select detecting time
00: 2 15 /f IO
01: 2 17 /f IO
10: 2 19 /f IO
11: 2 21 /f
IO
Always
write “0”
IDLE2
0: Stop
1: Operate
1: Internally
connects
WDT out
to the
reset pin
Always
write “0”
Watchdog timer out control
0
−
1 Connects WDT out to a reset
IDLE2 control
0 Stop
1 Operation
Watchdog timer detection time
00 2 15 /fIO (Approximately 3.28 ms at f OSCH
= 40 MHz)
01 2 17 /f
IO
(Approximately 1.31 ms at f
OSCH
= 40 MHz)
10 2 19 /f IO (Approximately 52.4 ms at f OSCH
= 40 MHz)
11 2 21 /f
IO
(Approximately 210 ms at f
OSCH
= 40 MHz)
Watchdog timer enable/disable control
0 Disabled
1 Enabled
Figure 3.12.4 Watchdog Timer Mode Register
7 6 5 4 3 2 1 0
Bit symbol
−
WDCR
(1302H)
Read/Write W
After reset
− Read
-modify
-write
instruction
is prohibited
Function B1H: WDT disable code
4EH: WDT clear code
WDT disable/clear control
B1H Disable code
4EH Clear code
Others Don’t care
Figure 3.12.5 Watchdog Timer Control Register