TLE 8264E Infineon Technologies, TLE 8264E Datasheet - Page 36

• Manufacturer Part Number: TLE 8264E
• Manufacturer: Infineon Technologies

Specifications of TLE 8264E

• Packages: PG-DSO-36
• Transceiver: High Speed CAN ISO 11898 - 5 / 3 x LIN2.1 / J2602
• Voltage Regulator Output: 2 x 200 mA + 400 mA
• Watchdog: Standard and Window Watchdog
• Quiescent Current (max.): 28 ?A (typ) Sleep Mode (5V on)
• Standby Current: 58 ?A (typ) Stop Mode (5V on)

Figure 15
8.4.5
If the RxD signal is permanently recessive (such as shorted to
bus, the host microcontroller of this transceiver could start a message at any time because the bus appears to be
idle. To prevent this node from disturbing communication on the bus, the SBC offers permanent RxD recessive
clamping. If the RxD signal is permanently recessive, the failure is diagnosed and the transmitter is deactivated
as long as the error occurs. The transmitter is reactivated after an SPI command.
8.4.6
The CAN transceiver cell has no dedicated under voltage detection and use the
circuitry. The µC can switch of the CAN in case of undervoltage.
8.4.7
In case one of the following bus failures is detected by the SBC the interrupt bit CAN BUS is set to “1” and an
interrupt is generated, if not masked. The CAN transceiver does not change the mode due to a detected bus
failure.
Bus Failures
•
•
•
•
•
•
A short of CANH to CANL is detected by the microcontroller as the signal sent on TxD is not received on RxD.
8.5
SPLIT circuitry is activated during CAN Normal and Receive Only Mode and de-activated (SPLIT pin high ohmic)
during CAN Wake Capable and OFF Modes. The SPLIT pin is used to stabilize the recessive common mode signal
in Normal Mode and RxD Only Mode. This is achieved with a stabilized voltage of 0.5 x
A correct application of the SPLIT pin is shown in
implemented with two 60 Ω resistors and one 10 nF capacitor. The center node in this example is a stub node and
the recommended value for the split resistances is 1.5 kΩ.
Data Sheet
CANH short to GND
CANH short to Vs
CANH short to Vcc
CANL short to GND
CANL short to Vs
CANL short to Vcc
V
GND
OFF
CC1µC
TxD
Overtemp
ON
Release of the Transmission after Overtemperature
Permanent RxD Recessive Clamping
V
Bus failures
SPLIT Circuit
Failure
V
ccHSCAN
diff
CAN
Undervoltage
D
Overtemperature
Figure
Recessive
36
16. The SPLIT termination for the left and right nodes is
V
cc1µC
), although there is a message sent on the
High Speed CAN Transceiver
V
CC2
V
Dominant
ccHSCAN
or
Rev. 1.0, 2009-03-31
V
CC3
typical at SPLIT.
under voltage
R
TLE8264E
t
t
t