l99pm62gxp STMicroelectronics, l99pm62gxp Datasheet - Page 27
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l99pm62gxp
Manufacturer Part Number
l99pm62gxp
Description
Power Management Ic With Lin And High Speed Can
Manufacturer
STMicroelectronics
Datasheet
1.L99PM62GXP.pdf
(102 pages)
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L99PM62GXP
2.5.2
Table 6.
Figure 16. Example: exit fail safe mode from watchdog failure
µC (oscillator)
V
Temperature
1
Failure source
Multiple failures – entering forced V
If the fail-safe condition persists and all attempts to return to normal system operation fail,
the L99PM62 enters the forced V
system. The forced V
The root cause of the forced V
The forced V
●
●
●
Persisting fail safe conditions and exit modes
Multiple watchdog failures: forced sleep WD = 1 (15x watchdog failure)
Multiple thermal shutdown 2: forced sleep TSD2/SHTV1 = 1 (7 x TSD2)
V
1
15 consecutive
watchdog failures
short at turn-on
7 times TSD2
short at turn-on: forced sleep TSD2/SHTV1 = 1 (V
Failure condition
BAT
standby mode is entered in case of:
BAT
standby mode can be terminated by any regular wake-up event.
Fail-safe = 1
ForcedSleepWD = 1
Fail-safe = 1
ForcedSleepTSD2/SHTV
Fail-safe = 1
TW = 1
TSD1 = 1
TSD2 = 1
ForcedSleepTSD2/SHTV
Doc ID 17639 Rev 3
BAT
BAT
standby is indicated in the SPI status registers
standby mode in order to prevent damage to the
Diagnosis
BAT
standby mode
1
1
= 1
= 1
1
< V
Wake-up
TRIG = 1 during LOWi
read & clear SR3
Read&clear SR3 after wake-up
Read&clear SR3 after wake-up
1fail
Exit from fail-safe mode
for t > t
Detailed description
V1fail
)
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