gc80c520g CORERIVER Semiconductor, gc80c520g Datasheet - Page 26

• Manufacturer Part Number: gc80c520g
• Description: Eprom / Rom / Romless Based 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

6.8. WDT (Watchdog Timer)
WD1 WD0 Interrupt Time-out (@25MHz)
Detects software upset due to external noise or other causes
Allows an automatic recovery using WDT interrupt
Watchdog Time-out Values
0
0
1
1
WDCON.0
RESET
RWT
0
1
0
1
Default : WD[1:0] = [0,0]
CLK
2
2
2
2
17
20
23
26
clocks
clocks
clocks
clocks
0
2,684.35 ms
335.54 ms
41.94 ms
5.24 ms
27-bit Counter
17
2
2
2
2
17
20
23
26
Reset Time-out (@25MHz)
20
+ 512 clocks
+ 512 clocks
+ 512 clocks
+ 512 clocks
23
26
2,684.38 ms
2
2
2
2
335.56 ms
26
23
20
17
41.96 ms
5.26 ms
WD1
CKCON[7:6]
11
10
01
00
WD0
WDCON (D8h) : Watchdog & Power Status Register
-
POR :
EPFI :
PFI
WDIF :
WTRF :
EWT :
RWT :
512 clocks
R/W(1) R/W(0) R/W(1) R/W(0) R/W(0) R/W(0) R/W(0)
WDCON.3
:
POR
WDIF
Delay
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
EPFI
WDCON.1
WDCON.2
EWDT
WTRF
MiDAS1.0 Family
EWT
EIE.4
PFI
WDIF
WTRF
Interrupt
WDT Reset
EWT
RWT
[26]