TLE7269G

Functional Description

Data Sheet

16

Rev. 1.2, 2007-11-13

A transition from logical “High” to logical “Low” on the EN pin changes the operation mode from Normal Operation

mode to Sleep mode. If the TLE7269G is already in Sleep mode, changing the EN from “Low” to “High” results into

a mode change from Sleep mode to Normal Operation mode. If the device is in Stand-By mode a change from

“Low” to “High” on the EN pin changes the mode to Normal Operation mode (see Figure 4).

4.10

Power-On Reset

Figure 11

Power-on reset and Under-Voltage situation

A dropping power supply

V

of the whole LIN network. To avoid any blocking of the LIN network by a local ECU the TLE7269G has an

integrated Power-On reset at the supply

V

In case the supply voltage

V

the operation mode to Stand-By mode. In Stand-By mode the output stage of the TLE7269G is disabled and no

communication to the LIN bus is possible. The internal bus termination remains active as well as the INH pins (see

Figure 11 and Figure 4).

Supply voltage Vs

Power on reset level V

S,UV,PON

Power On reset

Normal Operation

Mode

Reset and

Communication

blocked

Stand-By

Mode

Blanking time t

blank,UV

Supply voltage Vs

Power on reset level V

S,UV,PON

Normal Operation

Mode

Communication

blocked

Blanking time t

blank,UV

Undervoltage level V

S,UV,BLK

Normal Operation

Mode

Under Voltage

Detection V

S

Supply voltage V

IO

Normal Operation

Mode

Communication

blocked

Blanking time t

blank,UV

Undervoltage level V

IO,UV

Normal Operation

Mode

Under Voltage

Detection V

IO