Datasheet

TLE6251-3G
Operation Modes
Data Sheet 9 Rev. 1.1, 2011-06-06
5 Operation Modes
Five different operation modes are available on TLE6251-3G. Each mode with specific characteristics in terms of
quiescent current, data transmission or failure diagnostic. For the mode selection the digital input pins EN and
NSTB are used. Both digital input pins are event triggered. Figure 4 illustrates the different mode changes
depending on the status of the EN and NSTB pins. A mode change via the mode selections pins EN and NSTB is
only possible if the power supplies
V
CC
, V
IO
and V
S
are activated.
Figure 4 Operation Modes
Under-voltage
on V
S
V
S
< V
S,Poff
EN NSTB INH
Normal Operation
mode
On11
EN NSTB INH
Stand-By
mode
On00
EN NSTB INH
Receive Only
mode
On10
EN NSTB INH
Sleep mode
Off00
Go-To-Sleep
command
EN NSTB INH
01On
Power Down
Under-voltage
on V
CC
Start – Up
Supply V
S
Supply V
CC
within t < t
UV(VCC)
Supply V
IO
within t < t
UV(VIO)
Under-voltage
on V
IO
EN -> 1
NSTB -> 1
EN -> 0
NSTB -> 0
EN = 1
NSTB -> 0
EN = 1
NSTB ->1
EN = 0
NSTB -> 0
EN = 0
NSTB -> 1
EN -> 0
NSTB = 1
EN -> 1
NSTB = 1
EN -> 1
NSTB -> 0
EN -> 0
NSTB -> 1
EN -> 1
NSTB = 0
EN -> 0
t < t
hSLP
NSTB = 0
EN -> 0
t > t
hSLP
NSTB = 0
t
hSLP
Timing important
for mode selection
EN = 0
NSTB -> 1
V
CC
& V
IO
ON
EN -> 1
NSTB -> 1
V
CC
& V
IO
ON
Wake-Up Event
Bus-Wake:
t > t
BUSdom
Local-Wake:
t > t
Wake
V
IO
< V
IO,UV
t > t
UV(VIO)
V
CC
< V
CC,UV
t > t
UV(VCC)
V
S
> V
S,Pon