TLE 7259-2GU Infineon Technologies, TLE 7259-2GU Datasheet - Page 10

• 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

4.2.1
In Low Slope mode data transmission rates up to 10.4 kBauds are possible. Setting the EN pin to “High” starts the
transition to Low Slope mode. (see
The mode change to Low Slope mode is defined by the time
the threshold, where the EN pin detects a “High” input signal, and the actual mode change of TLE7259-2GU into
Low Slope mode. Entering in Normal Operation mode, the TLE7259-2GU always enters per default into Low Slope
mode. The signal on the TxD pin is not relevant for entering into Low Slope mode.
Finally to release the data communication it is required to set the TxD pin to “High” for the time
Figure 5
.
4.2.2
In Flash mode it is possible to transmit and receive LIN messages on the LIN bus. The slew rate control
mechanism of the LIN bus signal is disabled. This allows higher data transmission rates, disregarding the EMC
limitations of the LIN network. The Flash mode is intended to be used during the ECU production for programming
the microcontroller via the LIN bus interface.
The TLE7259-2GU can be set to Flash mode only from Low Slope mode (see
by setting the EN pin to “Low” for the time
timing
to Low Slope mode. Finally to release the data transmission it is required to set the TxD pin to “High” for the time
t
Additionally the TLE7259-2GU can leave the Flash mode as well by switching only the EN pin to “Low”. By
applying this “Low” signal to the EN pin the TLE7259-2GU is put into Sleep mode.
Data Sheet
to,rec
.
t
fl2
,
t
fl3
Low Slope Mode
Timing to enter Low Slope Mode
Flash Mode
and
t
fl4
EN
(see
TxD
Figure
6). Leaving the Flash mode by the same sequence, sets the TLE7259-2GU back
Stand-By Mode / Sleep Mode
Figure
Don’t care
V
EN,ON
5).
t
fl1
and generating a falling and a rising edge at the TxD pin with the
t
MODE
10
t
MODE
. The time
Low Slope Mode
t
to,rec
Data transmission
t
MODE
Figure
specifies the delay time between
4). Flash mode is entered
Functional Description
Rev. 1.1, 2008-07-14
TLE7259-2GU
t
to,rec.