TLE 6251G Infineon Technologies, TLE 6251G Datasheet - Page 11

• Manufacturer Part Number: TLE 6251G
• Manufacturer: Infineon Technologies

Specifications of TLE 6251G

• Packages: P-DSO-14
• Transmission Ratemax: 1.0 Mbit/s
• Quiescent Current (max.): < 30 µA @ 5V standby
• Bus Wake-up Capability: Yes
• Additional Features: NSTB, WK, EN, NERR, INH, Vio
• Wake-up Inputs: Bus wake-up + wake-up pin

Standby Mode
In the standby mode, transmission and reception of signals is deactivated. This is the first step of
reducing the current consumption. The internal voltage regulator control pin (INH) is still active,
so all external (INH controlled) powered devices are also activated.
Wake-Up
The wake-up is possible via WK-pin (filtering time
t
at RxD and switch the transceiver into the normal mode. Once the wake-up flag is set (= LOW),
it remains in this state, as long as the transceiver is not transferred into the normal mode. The
detection of the wake-up source is possible during the first 4 recessive to dominant edges at TxD
in the normal mode.
Go-to Sleep Mode
The go-to sleep mode is used to have an intermediate step between the sleep mode and all other
modes. This mode has to control if the sleep command (EN = 1, NSTB = 0) is activated for a
minimum hold time
mode. The activated features in go-to sleep mode are similar to the standby mode.
Sleep Mode
In the sleep mode, transmission and reception of signals is deactivated. This is the second step of
reducing the current consumption. The internal voltage regulator control pin (INH) is deactivated.
Transition into other Modes during Sleep Mode
Transition from sleep into other modes is possible if
can be done by the mode control inputs.
Wake-Up
The wake-up is possible via WK-pin (filtering time
t
pins to LOW, see
voltage regulator is activated by the inhibit output INH, and the µC restarts. Now the µC is able
to detect this change at RxD and switch the transceiver into the normal mode. Once the wake-up
flag is set (= LOW), it remains in this state, as long as the transceiver is not transferred into the
normal mode. The detection of the wake-up source is possible during the first 4 recessive to
dominant edges at TxD in the normal mode.
Final Data Sheet
WU
WU
) and sets the RxD/NERR pins to LOW, see
) and automatically transfers the TLE 6251 G into the standby mode and sets the RxD/NERR
Figure
t
>
t
hSLP
4. Once the TLE 6251 G has been set to the standby mode, the system
. Afterwards the TLE 6251 G automatically transfers into the sleep
Figure
11
t
t
V
>
>
4. Now the µC is able to detect this change
CC
t
t
WK
WK
and
) or CAN message (filtering time
) or CAN message (filtering time
V
µC
active. Selection of the modes
Rev. 3.3, 2008-06-19
TLE 6251 G
t
t
>
>