Data Sheet

8

Rev. 1.0, 2010-06-02

TLE8250G

Functional Description

4.2

Operation Modes

Three different operation modes are available on TLE8250G. Each mode with specific characteristics in terms of

quiescent current or data transmission. For the mode selection the digital input pins NEN and NRM are used.

Figure 4 illustrates the different mode changes depending on the status of the NEN and NRM pins. After suppling

V

the TLE8250G to Stand-By per default. If the microcontroller is up and running the TLE8250G can change to any

operation mode within the time for mode change

t

Figure 4

Operation Modes

The TLE8250G has 3 major operation modes:

•

Stand-By mode

•

Normal Operation mode

•

Receive-Only mode

Table 2

Operating modes

Mode

NRM

NEN

Bus Bias

Comments

Normal

Operation

“High” “Low”

V

Output driver stage is active.

Receiver unit is active.

Stand-By

“Low”

or

“High”

“High”

Floating

Output driver stage is disabled.

Receiver unit is disabled.

Receive-Only

“Low”

“Low”

V

Output driver stage is disabled.

Receiver unit is active.

V

“Low”

or

“High”

“Low”

or

“High”

Floating

Output driver stage is disabled.

Receiver unit is disabled.