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

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

Specifications of TLE 7259-2GE

• Packages: PG-DSO-8
• Transmission Ratemax: 20.0 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 Normal Slope mode data transmission rates up to 20 kBauds are possible. Setting the EN pin to “High” starts
the transition to Normal Slope mode. (see
The mode change to Normal Slope mode is defined by the time
between the threshold, where the EN pin detects a “High” input signal, and the actual mode change of TLE7259-
2GE into Normal Slope mode. Entering in Normal Operation mode, the TLE7259-2GE always enters per default
into Normal Slope mode. The signal on the TxD pin is not relevant for entering into Normal 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 TLE7259-2GE can be set to Flash mode only from Normal Slope mode (see
by setting the EN pin to “Low” for the time
timing
to Normal Slope mode. Finally to release the data transmission it is required to set the TxD pin to “High” for the
time
Additionally the TLE7259-2GE 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 TLE7259-2GE is put into Sleep mode.
Data Sheet
t
to,rec
t
fl2
,
.
t
fl3
Normal Slope Mode
Timing to enter Normal Slope Mode
Flash Mode
and
t
EN
fl4
TxD
(see
Figure
Stand-By Mode / Sleep Mode
6). Leaving the Flash mode by the same sequence, sets the TLE7259-2GE back
Don’t care
V
EN,ON
Figure
t
fl1
and generating a falling and a rising edge at the TxD pin with the
t
MODE
5).
10
t
MODE
. The time
Normal Slope Mode
t
to,rec
Data transmission
Figure
t
MODE
4). Flash mode is entered
Functional Description
specifies the delay time
Rev. 1.1, 2008-09-05
TLE7259-2GE
t
to,rec.