gc80c521a CORERIVER Semiconductor, gc80c521a Datasheet - Page 33

• Manufacturer Part Number: gc80c521a
• Description: Flash / Isp / Iap 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

WD2
0
0
0
0
1
1
1
1
6.8. WDT (Watchdog Timer)
Detects software upset due to external noise or other causes
Allows an automatic recovery using WDT interrupt
Watchdog Time-out Values
CKCON (8Eh) : Clock Control Register
R/W(1) R/W(1) R/W(1) R/W(0) R/W(0) R/W(0)
WDMOD=0
WD2
WD[2:0] :
WD1
0
0
1
1
0
0
1
1
Default : WD[2:0] = [1,1,1]
WD1
WD0
0
1
0
1
0
1
0
1
WD0
WDT Timer Count mode
2
2
2
2
2
2
2
2
10
11
12
13
14
15
16
17
Interrupt Time-out
clocks
clocks
clocks
clocks
clocks
clocks
clocks
clocks
T2M
(@12MHz)
about 85 us
T1M
1.365 ms
10.92 ms
2.73 ms
5.46 ms
170 us
341 us
682 us
T0M
2
2
2
2
2
2
2
2
Reset Time-out
-
10
11
12
13
14
15
16
17
(@12MHz)
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
-
WD2 WD1 WD0
0
0
0
0
1
1
1
1
WDMOD=1
WDCON (D8h) : Watchdog & Power Status Register
WDMOD
R/W(0) R/W(1) R/W(0) R/W(1) R/W(0) R/W(0) R/W(0) R/W(0)
0
0
1
1
0
0
1
1
WDMOD : WDT mode selection Flag
POR
EPFI
PFI
WDIF
WTRF
EWT
RWT
0
1
0
1
0
1
0
1
POR
: Power-on Reset Flag
: Power-fail Interrupt Enable
: Power-Fail interrupt Flag
: Watchdog Timer Interrupt Flag
: Watchdog Timer Reset Flag. Only cleared by S/W.
: Watchdog Timer Reset Enable
: Restart Watchdog Timer
2
2
2
2
2
2
2
2
19
20
21
22
23
24
25
26
EPFI
Interrupt Time-out
clocks
clocks
clocks
clocks
clocks
clocks
clocks
clocks
MiDAS1.0B Family
(@12MHz)
PFI
174.76 ms
349.52 ms
699.05 ms
43.69 ms
87.38 ms
WDIF
1.398 s
2.796 s
5.592 s
WTRF
2
2
2
2
2
2
2
2
Reset Time-out
19
20
21
22
23
24
25
26
(@12MHz)
EWT
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
RWT
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