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參數(shù)資料
| 型號： | TLE6259-2G |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | Single-Wire-Transceiver |
| 中文描述： | 單線收發(fā)器 |
| 文件頁數(shù)： | 6/18頁 |
| 文件大?。?/td> | 693K |
| 代理商： | TLE6259-2G |
Final Datasheet TLE 6259-2
Version 2.06
6
2003-02-21
The 100nF capacitors close to the V
S
pins of the 6259-2 and the voltage regulator help
to improve the EMC behavior of the system.
Sleep Mode
In order to reduce the current consumption the TLE 6259-2 offers a sleep operation
mode. This mode is selected by switching the enable input EN low (see figure 3, state
diagram). In the sleep mode, a voltage regulator can be controlled via the INH output in
order to minimize the current consumption of the whole application. A wake-up caused
by a message on the communication bus, automatically enables the voltage regulator by
switching the INH output high. In parallel the wake-up is indicated by setting the RxD
output LOW. When entering the normal mode this wake-up flag is reset and the RxD
output is released to transmit the bus data.
In case the voltage regulator control input is not connected to INH output or the
microcontroller is active respectively, the TLE6259-2 can be set in normal operation
mode without a wake-up via the communication bus.
Bus Short to GND Feature
The TLE6259-2 also has a BUS short to GND feature implemented, in order to protect
the battery from running out of charge. A normal master termination connection like
described above, 1k
resistor and diode between bus and V
S
, whould cause a
constantly drawn current via this path. The resulting resistance of this short to GND is
lower than 1k . To avoid this current during a generator off state, like a parked car, the
sleep mode has a bus short to GND feature implemented in the 6259-2. This feature is
only applicable, if the master termination is connected with the INH pin, instead of the
V
S
. For a more detailed information see the application circuit in figure 6 and 7.
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