TLE6251-3G Datasheet, PDF (22/36 Pages) Infineon Technologies AG – High Speed CAN-Transceiver with Wake and Failure Detection

TLE6251-3G
Fail Safe Features
7.3.2
Under-Voltage Event on V_S
If an under-voltage event is detected at the power supply V_S, the TLE6251-3G immediately transfers into the
Stand-By mode, regardless of the operation mode in which the TLE6251-3G might currently operate. After the
power supply V_S has been reestablished, the operation mode can be changed by applying a logical “High” signal
to the EN pin or the NSTB pin.
In the case the TLE6251-3G detects an under-voltage event on the V_CC or V_IO power supply, the TLE6251-3G
changes to Sleep mode. If the TLE6251-3G detects in Sleep mode an under-voltage event on the V_S power supply,
the device changes to the Stand-By mode, even if the under-voltage event on the V_CC or V_IO power supply is still
present.
V_S
V_S,Poff
V_S,Pon
any mode
Power Down
t
Stand-By mode
Figure 13 Under-Voltage on V_S
7.4
Voltage Adaptation
The advantage of the adaptive microcontroller logic is the ratio metrical scaling of the I/O levels depending on the
input voltage at the V_IO pin. Connecting the V_IO input to the I/O supply of the microcontroller ensures, that the I/O
voltage of the microcontroller fits to the internal logic levels of the TLE6251-3G.
Data Sheet
22
Rev. 1.1, 2011-06-06