l99pm62gxp STMicroelectronics, l99pm62gxp Datasheet - Page 26

• Manufacturer Part Number: l99pm62gxp
• Description: Power Management Ic With Lin And High Speed Can
• Manufacturer: STMicroelectronics

Detailed description
Table 5.
1. if V
26/102
µC (oscillator)
V
Temperature
SPI
1
Failure source
The fail-safe bit is located in the global status register (Bit 0).
1
< V
1fail
The fail safe functionality is also available in V
fails safe mode is entered in the following cases:
●
●
●
In fail safe mode the L99PM62 returns to a default. The fail safe condition is indicated to the
remaining system in the global status register. The conditions during fails safe mode are:
●
●
●
●
●
●
●
If OUT3 is configured as FSO, the internal fail safe mode can be monitored at OUT3 (high-
side driver is turned on in fail-safe mode). Self protection features for OUT3 when configured
as FSO are active (see
OUT3 is configured as fail safe output by default. It can be configured to normal high-side
driver operation by SPI. It this case, the configuration remains until Vs power on.
If the fail safe mode was entered it keeps active until the fail safe condition is removed and
the fail safe was read by spi. depending on the root cause of the fail safe operation, the
actions to exit fail safe mode are as shown in the following table.
Fail safe conditions and exit modes
(for t > t
V
Watchdog failure (if watchdog still running due to I
Thermal shutdown TSD2
All outputs are turned off
All control registers are set to default values (except OUT3/FSO configuration)
Write operations to control registers are blocked until the fail safe condition is cleared
(see
LIN and HS CAN transmitter, OpAmps and SPI remain on
Corresponding failure bits in status registers are set.
FSO Bit (Bit 0 global status register) is set
OUT3/FSO is activated if configured as fail safe output
Watchdog early write
failure or expired
window
Short at turn-on
Undervoltage
T
DI short to GND or V
1
V1fail
j
undervoltage (V
> TSD2
Failure condition
Table
)
5)
Section 3.3: High-side driver outputs
1
CC
< Vrth for t > t
Fail-safe = 1
WDfail = n+1
Fail-safe = 1
Forced Sleep TSD2/SHTV
Fail-safe = 1
V
Fail-safe = 1
TW = 1
TSD1 = 1
TSD2 = 1
Fail-safe = 1
Doc ID 17639 Rev 3
1fail
= 1
(1)
UV1
Diagnosis
)
1
standby mode. During V
1
V1
= 1
> I
cmp
).
TRIG = 1 during LOWi and
read fail-safe bit
Read&Clear SR3 after wake
V
Read Fail-safe bit
T
Read&Clear SR3
Valid SPI command
)
j
1
< TSD2
Exit from fail-safe mode
> Vrth
1
standby mode the
L99PM62GXP