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PDF TLE6251-2G Data sheet ( Hoja de datos )
| Número de pieza | TLE6251-2G | |
| Descripción | High Speed CAN-Transceiver | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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TLE6251-2G
High Speed CAN-Transceiver with Wake and Failure Detection
Data Sheet
Rev. 1.1, 2011-06-06
Automotive Power
1 page  
3 Pin Configuration
3.1 Pin Assignment
TLE6251-2G
Pin Configuration
TxD
GND
VCC
RxD
VIO
EN
INH
1
2
3
4
5
6
7
14 NSTB
13 CANH
12 CANL
11 SPLIT
10 VS
9 WK
8 NERR
Figure 2 Pin Configuration
3.2 Pin Definitions and Functions
9
Table 1
Pin Definitions and Functions
Pin Symbol
Function
1 TxD
2 GND
Transmit Data Input;
integrated pull-up resistor to VIO, “Low” for “Dominant” state.
Ground
3 VCC
Transceiver Supply Voltage;
100 nF decoupling capacitor to GND recommend.
4 RxD
5 VIO
Receive Data Output;
“Low” in “Dominant” state.
Output voltage level dependent on the VIO supply
Logic Supply Voltage;
Digital Supply Voltage for the logic pins TxD, RxD, EN, NERR and NSTB;
Usually connected to the supply voltage of the external microcontroller;
100 nF decoupling capacitor to GND recommend.
6 EN
Mode Control Input;
Integrated pull-down resistor;
“High” for Normal Operation mode.
Data Sheet
5 Rev. 1.1, 2011-06-06
5 Page 
TLE6251-2G
Operation Modes
• The SPLIT pin is set to VCC/2.
• The bus biasing is set to VCC/2.
• The low power receiver and the bus Wake-Up function is inactive.
• The local Wake-Up pin WK is disabled.
• The failure diagnostic is active and local failures are indicated at the NERR pin (see Chapter 8).
• The under-voltage detection on the all 3 power supplies VCC, VIO and VS is active.
The HS CAN transceiver TLE6251-2G enters Receive-Only mode by setting the EN pin to logical “Low” and the
NSTB to logical “High” (see Table 2 or Figure 4).
5.3 Stand - By Mode
After the power-up sequence the TLE6251-2G enters automatically into Stand-By mode. Stand-By mode is an idle
mode of the TLE6251-2G with optimized power consumption. In Stand-By mode the TLE6251-2G can not send
or receive any data. The output stage and the normal receiver unit are disabled. Both CAN bus pins, CANH and
CANL are connected to GND and the Split termination output is floating. The following functions are available in
Stand-By mode:
• The output stage is disabled.
• The normal receiver unit is disabled.
• The low power receiver is active and monitors the CAN bus. In case of a message on the CAN bus the
TLE6251-2G sets an internal Wake-Up flag. If the power supplies VCC and VIO are active, the Wake-Up event
is indicated by the RxD pin and the NERR pin (see Chapter 8).
• The local Wake-Up pin is active and a local Wake-Up event is indicated by the RxD and NERR pin, if the power
supplies VCC and VIO are active (see Chapter 8).
• The INH output is active and set to VS.
• Through the internal resistors RI (see Figure 1), the pins CANH and CANL are connected to GND.
• If the power supplies VCC and VIO are active, the RxD pin indicates the Wake-Up events.
• The TxD pin is disabled
• The failure diagnostic is disabled.
• The under-voltage detection on the all 3 power supplies VCC, VIO and VS is active.
• The TLE6251-2G detects a Power-Up event and indicates it at the NERR pin (see Chapter 8).
There are several ways to enter the Stand-By mode (see Figure 4):
• After the start-up sequence the device enters per default Stand-By mode. Mode changes are only possible if
VCC and VIO are present.
• The device is in Sleep mode and a Wake-Up event occurs.
• The device is in the Go-To-Sleep command and the EN pin goes low before the time t < thSLP has expired.
• The device is in Normal Operation Mode or Receive-Only mode and the EN pin and NSTB pin are set to logical
“Low”.
• An under-voltage event occurs on the power supply VS. In case of an under-voltage event, the TLE6251-2G
device always changes to Stand-By mode regardless in which mode the device currently operates.
Data Sheet
11 Rev. 1.1, 2011-06-06
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TLE6251-2G.PDF ] | |
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