TLE 7269G Infineon Technologies, TLE 7269G Datasheet - Page 15

• Manufacturer Part Number: TLE 7269G
• Manufacturer: Infineon Technologies

Specifications of TLE 7269G

• Packages: PG-DSO-14
• Transmission Ratemax: 20.0 kbit/s
• Quiescent Current (max.): < 10 µA sleep mode
• Bus Wake-up Capability: Yes
• Additional Features: 2 x LIN trx, INH, EN, WK, Vio
• Wake-up Inputs: Bus wake-up + wake-up pin

4.8
Figure 9
Beside the remote Wake-Up, a Wake-Up of the TLE7269G via the WK pin is possible. This type of Wake-Up event
is called “Local Wake Up”. A falling edge on the WK pin followed by a “Low” signal for t > t
Wake-Up (see
In Stand-By mode the TxD1 pin indicates the source of the Wake-Up event, the TxD2 pin remains inactive. A
strong pull-down on the pin TxD1 indicates a bus Wake-Up event (see
Up event or the Power-Up event occurred. A “Low” signal on the RxD1 pin reports a local or bus Wake-Up event,
a logical “High” signal on RxD1 indicates a Power-Up event. A “Low” signal on the RxD2 pin indicates a Wake-Up
event on the pin BUS2.
4.9
Figure 10
It is also possible to change from Sleep mode to Normal Operation mode by setting the EN pin to logical
“High”.This feature is useful if the external microcontroller is continuously powered and not connected to the INH1
pin or the INH2 pin. The EN pin has an integrated pull-down resistor to ensure the device remains in Sleep or
Stand-By mode even if the voltage on the EN pin is floating. The EN pin has an integrated hysteresis to avoid the
toggling of the operation modes during the transition of the EN signal (see
Data Sheet
Local Wake-Up
Local Wake-Up behavior
Mode Transition via EN pin
Mode Transition via EN pin
Figure
9) and changes the operation mode to Stand-By mode.
V
V
Stand-By Mode
INH1/
Sleep Mode /
INH2
EN,ON
WK
V
WK,L
EN Signal
Sleep Mode
t
MODE
WK Signal
Normal Operation Mode
t
WK
V
EN
15
Stand-By Mode
Figure
Figure
4). The RxD1 pin signals if a Wake-
Sleep Mode
V
EN Hysteresis
EN,OFF
10).
t
MODE
Functional Description
Rev. 1.2, 2007-11-13
WK
results in a local
TLE7269G