Data Sheet
32
Rev. 1.00
2017-07-31
TLE9263BQXV33
System Features
Note:
An overvoltage event on VCC1 will only lead to SBC Fail-Safe Mode if the bit VCC1_OV_RST is set and
if
CFGP
= ‘0’ (Config 2/4).
Note:
The content of the WD_FAIL bits will depend on the device configuration, e.g. 1 or 2 watchdog
failures.
Note:
See
Chapter 15.6.1
for detailed description of the 4x VCC1 undervoltage behavior.
5.1.7
SBC Development Mode
The SBC Development Mode is used during the development phase of the module. It is especially useful for
software development.
Compared to the default SBC user mode operation, this mode is a super set of the state machine. The device
will start also in SBC Init Mode and it is possible to use all the SBC Modes and functions with following
differences:
• Watchdog is stopped and does not need to be triggered. Therefore no reset is triggered due to watchdog
failure
•
SBC Fail-Safe and SBC Restart Mode are not reached due to watchdog failure but the other reasons to enter
these modes are still valid
•
LINx, CAN and VCC2 default value in SBC INIT MODE and entering SBC Normal Mode from SBC Init Mode
is ON instead of OFF
The SBC Development Mode is reached automatically if the FO3/TEST pin is set and kept LOW during SBC Init
Mode. The voltage level monitoring is started as soon as VS > V
POR,f
. The Development Mode is configured and
maintained if SBC Init Mode is left by sending any SPI command while FO3/TEST is LOW. In case the FO3/TEST
level will be HIGH for longer than t
TEST
during the monitoring period then the SBC Development Mode is not
reached .
The SBC will remain in this mode for all conditions and can only be left by powering down the device
(VS <
V
POR,f
).
Table 8
Reasons for Fail-Safe - State of SPI Status Bits after Return to Normal Mode
Prev. SBC
Mode
Failure Event
DEV_
STAT
TSD2
WD_
FAIL
VCC1_
UV
VCC1_
UV_FS
VCC1_
OV
VCC1_
SC
Normal
1 x Watchdog Failure 01
x
01
x
x
x
x
Normal
2 x Watchdog Failure 01
x
10
x
x
x
x
Normal
TSD2
01
1
xx
x
x
x
x
Normal
VCC1 short to GND
01
x
xx
1
x
x
1
Normal
4x VCC1 UV
01
x
xx
1
1
x
x
Normal
VCC1 overvoltage
01
x
xx
x
x
1
x
Stop
1 x Watchdog Failure 01
x
01
x
x
x
x
Stop
2 x Watchdog Failure 01
x
10
x
x
x
x
Stop TSD2
01
1
xx
x
x
x
x
Stop
VCC1 short to GND
01
x
xx
1
x
x
1
Stop
4x VCC1 UV
01
x
xx
1
1
x
x
Stop VCC1
overvoltage
01
x
xx
x
x
1
x
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from