TLE 7259-2GU Infineon Technologies, TLE 7259-2GU Datasheet - Page 12

• Manufacturer Part Number: TLE 7259-2GU
• Manufacturer: Infineon Technologies

Specifications of TLE 7259-2GU

• Packages: PG-DSO-8
• Transmission Ratemax: 10.4 kbit/s
• Quiescent Current (max.): < 10 µA sleep mode
• Bus Wake-up Capability: Yes
• Additional Features: INH, EN, WK
• Wake-up Inputs: Bus wake-up + wake-up pin

4.4
In order to reduce the current consumption the TLE7259-2GU offers a Sleep mode. In Sleep mode the quiescent
current on
To switch the TLE7259-2GU from Normal Operation mode to Sleep mode, the EN pin has to be set to “Low”.
Conversely a logical “High” on the EN pin sets the device directly back to Normal Operation mode (see
While the TLE7259-2GU is in Sleep mode the following functions are available:
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4.5
A Wake-Up event changes the operation mode of the TLE7259-2GU from Sleep mode to Stand-By mode. There
are 3 different ways to wake-up the TLE7259-2GU from Sleep mode.
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4.6
Figure 7
Data Sheet
The output stage is disabled and the internal bus terminations are switched off (High Impedance on the pin
BUS). The internal current source on the bus pin ensures that the levels on the pin BUS remains recessive and
protects the LIN network against accidental bus Wake-Up events.
The receiver stage is turned off.
RxD output pin is “High” if a pull-up resistor is connected to the external micro controller supply. The TxD pin
is disabled. The logical state on the TxD pin is “Low”, due to the internal pull-down resistor.
The INH output is switched off and floating.
The bus wake-up comparator is active and turns the TLE7259-2GU to Stand-By mode in case of a bus Wake-
Up event.
The WK pin is active and turns the TLE7259-2GU to Stand-By mode in case of a local Wake-Up.
The EN pin remains active, switching the EN pin to “High“ changes the operation mode to Normal Slope mode.
Bus Wake-Up via a dominant signal on the pin BUS.
Local Wake-Up via a minimum dominant time (
Mode change from Sleep mode to Normal Operation mode, by setting the EN pin to logical “High”.
V
S
Sleep Mode
Wake-Up Events
Bus Wake-Up via LIN bus
Bus Wake-Up behavior
and the leakage current on the pin BUS are cut back to a minimum.
V
INH
BUS
V
BUS,dom
Sleep Mode
LIN BUS Signal
t
WK,bus
t
WK
) on the WK pin.
12
Stand-By Mode
V
BUS,wk
Functional Description
Rev. 1.1, 2008-07-14
TLE7259-2GU
Figure
4).