TLE6251-3G Infineon Technologies, TLE6251-3G Datasheet - Page 14

• Manufacturer Part Number: TLE6251-3G
• Manufacturer: Infineon Technologies

Specifications of TLE6251-3G

• 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, no SPLIT PIN
• 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
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 TLE6251-3G 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
Wake-Up Functions
Remote Wake-Up
Remote Wake-Up
Normal
mode
t
Wake
command
Chapter
Go-To
Sleep
initiates a bus Wake-Up (see
t < t
Wake
No Wake-Up
8). Once the HS CAN Transceiver TLE6251-3G has recognized the Wake-Up
V
S
power supply.
V
CC
and
„Recessive“ to „Dominant“
V
Sleep mode
IO
are turned off in Sleep mode, meaning a mode change can
change
14
Figure
6).
V
CC
t > t
and
Wake
V
IO
power supply are available, a
Stand-By mode
t
Wake-Up
Wake
Rev. 1.1, 2011-06-06
Wake-Up Functions
, no bus Wake-Up
TLE6251-3G
V
S
t
t
to the