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TMP92CZ26A
92CZ26A-618
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
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
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
/f
IO
(Approximately 819.2
μ
s at f
IO
=
40 MHz)
01
2
17
/f
IO
(Approximately 3.276 ms at f
IO
=
40 MHz)
10
2
19
/f
IO
(Approximately 13.107 ms at f
IO
=
40 MHz)
11
2
21
/f
IO
(Approximately 52.428 ms at f
IO
=
40 MHz)
Watchdog timer enable/disable control
0
Disabled
1
Enabled
Figure 3.24.4 Watchdog Timer Mode Register
7 6 5 4 3 2 1 0
Bit symbol
−
WDCR
(1301H)
Read/Write W
After
reset
−
Function
B1H: WDT disable code
4EH: WDT clear code
WDT disable/clear control
B1H Disable
code
4EH Clear
code
Others Don’t
care
Figure 3.24.5 Watchdog Timer Control Register
Read
-modify
-write
instruction is
prohibited