mc33889 Freescale Semiconductor, Inc, mc33889 Datasheet - Page 49

• Manufacturer Part Number: mc33889
• Description: System Basis Chip With Low Speed Fault Tolerant Can Interface
• Manufacturer: Freescale Semiconductor, Inc

Table 26. Watch dog
Table 27. jWatchdog operation (window and timeout)
TIM2 REGISTER
by switching on or off HS1
Table 28. TIM2 Register
Analog Integrated Circuit Device Data
Freescale Semiconductor
The purpose of TIM2 register is to select an appropriate timing for sensing the wake-up circuitry or cyclically supplying devices
condition
WDW
$101b
Reset
Reset
TIM2
0
0
0
0
1
1
1
1
no watchdog clear
(WD timing selected by TIM 1 bit WDW=1)
window closed
WD timing * 50%
WDT1
W
R
0
0
1
1
0
0
1
1
Window watchdog
Watchdog period
WDT0
0
1
0
1
0
1
0
1
D3
1
for watchdog clear
WD timing * 50%
window open
Watchdog timing [ms]
POR, RESET
CSP2
D2
100
350
100
350
0
10
50
10
50
(WD timing selected by TIM 1, bit WDW=0)
POR, RESET
Watchdog period
for watchdog clear
CSP1
window watchdog enabled (window lenght is
window open
Timeout watchdog
D1
0
LOGIC COMMANDS AND REGISTERS
FUNCTIONAL DEVICE OPERATION
half the watchdog timing)
no window watchdog
POR, RESET
CSP0
D0
0
33889
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