Data Sheet
106
Rev. 1.00
2017-07-31
TLE9263BQXV33
Supervision Functions
15
Supervision Functions
15.1
Reset Function
Figure 46
Reset Block Diagram
15.1.1
Reset Output Description
The reset output pin RO provides a reset information to the microcontroller, for example, in the event that the
output voltage has fallen below the undervoltage threshold
V
RT1/2/3/4
. In case of a reset event, the reset output
RO is pulled to low after the filter time
t
RF
and stays low as long as the reset event is present plus a reset delay
time
t
RD1
. When connecting the SBC to battery voltage, the reset signal remains LOW initially. When the output
voltage
V
cc1
has reached the reset default threshold V
RT1,r
, the reset output RO is released to HIGH after the
reset delay time t
RD1
. A reset can also occur due to a watchdog trigger failure. The reset threshold can be
adjusted via SPI, the default reset threshold is
V
RT1,f
. The RO pin has an integrated pull-up resistor. In case reset
is triggered, it will be pulled low for
V
cc1
≥
1V and for VS
≥
V
POR,f
(see also
Chapter 15.3
).
The timings for the RO triggering regarding VCC1 undervoltage and watchdog trigger is shown in
Figure 47
.
Reset logic
Incl. filter & delay
RO
VCC1
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