TLE 6251-2G Infineon Technologies, TLE 6251-2G Datasheet - Page 14

• Manufacturer Part Number: TLE 6251-2G
• Manufacturer: Infineon Technologies

Specifications of TLE 6251-2G

• Packages: PG-DSO-14
• Transmission Ratemax: 1.0 Mbit/s
• Quiescent Current (max.): < 30 µA @ 5V standby
• Bus Wake-up Capability: Yes
• Additional Features: NSTB, WK, EN, NERR, INH, Vio
• Wake-up Inputs: Bus wake-up + wake-up pin

6
There are several possibilities for a mode change from Sleep Mode to another operation mode.
•
•
•
•
In typical applications the power supplies
only be caused by an external event, also called Wake - Up. In case the
a mode change can be simple caused by changing the status on the mode control pins EN and NSTB.
6.1
A remote Wake - Up or also called bus Wake - Up occurs via a CAN bus message and changes the operation
mode from Sleep Mode to Stand - By Mode. A signal change from “Recessive” to “Dominant”, followed by a
“Dominant” signal for the time t >
Figure 6
In case the time of the “Dominant” signal on the CAN bus is shorter than the filtering time
occurs. The filter time is implemented to protect the HS CAN transceiver TLE6251-2G against unintended bus
Wake - Up’s, triggered by spikes on the CAN bus. The signal change on the CAN bus from “Recessive” to
“Dominant” is mandatory, a permanent “Dominant” signal would not activate any bus Wake - Up.
In Stand - By Mode the RxD output pin and the NERR output pin display the CAN bus Wake - Up event by a logical
“Low” signal (Details see
event and has changed to Stand-By Mode, the INH output pin becomes active and provides the voltage
external circuitry.
Data Sheet
CANH
CANL
Remote Wake - Up via a message on the CAN bus.
Local Wake - Up via a signal change on the pin WK.
A status change of the logical signals applied to the mode control pins EN and NSTB.
An under - voltage detection on the
INH
Operation
Normal
Wake - Up Functions
Remote Wake - Up
Remote Wake - Up
Mode
Command
Chapter
Go-To
Sleep
t < t
Wake
t
No Wake-Up
Wake
8). Once the HS CAN Transceiver TLE6251-2G has recognized the Wake - Up
initiates a bus Wake - Up (see
V
S
V
power supply.
CC
and
Recessive to Dominant
V
Sleep Mode
IO
are turned off in Sleep Mode, meaning a mode change can
14
Change
Figure
V
CC
t > t
and
6).
Wake
V
IO
power supply are available,
t
Stand-By Mode
Wake
Wake - Up Functions
Rev. 1.0, 2009-05-07
Wake-Up
, no bus Wake - Up
TLE6251-2G
V
S
to the
t
t