mg84fl54b Megawin Technology, mg84fl54b Datasheet - Page 66

• Manufacturer Part Number: mg84fl54b
• Description: Full-speed Usb Micro-controller
• Manufacturer: Megawin Technology

18.5. Sample Code for WDT
Condition: Fosc=6MHz
Target: WDT Overflow Period = 1.048 seconds
WDTCR_buf DATA
start:
main_loop:
66
PS2 PS1 PS0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
;...
;...
MOV
ANL
ORL
MOV
ORL
MOV
ORL
MOV
;...
;...
JMP
ANL
MOV
0
1
0
1
0
1
0
1
30h
WDTCR_buf,#00h
WDTCR_buf,#0F8h ;(PS2,PS1,PS0)=(0,1,1), prescaler=16
WDTCR_buf,#03h
WDTCR,WDTCR_buf ;
WDTCR_buf,#20h
WDTCR,WDTCR_buf ;write to WDTCR register
WDTCR_buf,#10h
WDTCR,WDTCR_buf ;
main_loop
WDTCR_buf,#0DFh ;disable WDT
WDTCR,WDTCR_buf ;
Prescaler value
128
256
16
32
64
2
4
8
;declare a buffer for WDTCR register
;(because WDTCR is a Write-only register)
;clear buffer for WDTCR register
;@Fosc=6MHz, WDT_Overflow_Period=1.048s
;enable WDT
;clear WDT
MG84FL54B Data Sheet
Fosc=6MHz
131.072 ms
262.144 ms
524.288 ms
16.778 s
1.048 s
2.097 s
4.194 s
8.389 s
Fosc=12MHz
131.072 ms
262.144 ms
524.288 ms
65.536 ms
1.048 s
2.097 s
4.194 s
8.389 s
MEGAWIN