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PDF TLE6251G Data sheet ( Hoja de datos )
| Número de pieza | TLE6251G | |
| Descripción | High Speed CAN-Transceiver | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Final Data Sheet, Rev. 3.2, Apr. 2006
TLE 6251 G
High Speed CAN-Transceiver with Wake
Detection
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Automotive Power
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1 page  
TLE 6251 G
Pin Configuration
TLE 6251 G
(P-DSO-14-13)
TxD
GND
VCC
RxD
VµC
EN
INH
1
2
3
4
5
6
7
14 NSTB
13 CANH
12 CANL
11 SPLIT
10 VS
9 WK
8 NERR
Figure 1
AEP03398.VSD
Pin Configuration (top view)
Table 1
Pin Definitions and Functions
www.DaPtaiSnheNeto4U. .com Symbol Function
1 TxD CAN transmit data input; 20 kΩ pull-up, LOW in dominant state
2
GND
Ground
3 VCC 5 V supply input; block to GND with 100 nF ceramic capacitor
4 RxD CAN receive data output; LOW in dominant state, push-pull output
stage
5 VµC Logic voltage level adapter input; connect to pin VCC for 5 V
microcontroller, connect to additional supply voltage for other logic
voltage levels, block to GND with 100 nF ceramic capacitor
6 EN Mode control input 1; internal pull-down, see Figure 6
7 INH Control output; set HIGH to activate voltage regulator; open drain
8 NERR Diagnosis output 1; error and power on indication output, push-pull
output stage
9 WK Wake-up input; bi-level sensitive
Final Data Sheet
5 Rev. 3.2, 2006-04-05
5 Page 
TLE 6251 G
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 > tWK) or CAN message (filtering time t >
tWU) and sets the RxD/NERR pins to LOW, see Figure 4. 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.
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 t > thSLP. Afterwards the TLE 6251 G automatically transfers into the sleep
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.
www.DaTtarSahenest4iUti.oconm into other Modes during Sleep Mode
Transition from sleep into other modes is possible if VCC and VµC active. Selection of the modes
can be done by the mode control inputs.
Wake-Up
The wake-up is possible via WK-pin (filtering time t > tWK) or CAN message (filtering time t >
tWU) and automatically transfers the TLE 6251 G into the standby mode and sets the RxD/NERR
pins to LOW, see Figure 4. Once the TLE 6251 G has been set to the standby mode, the system
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
11 Rev. 3.2, 2006-04-05
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TLE6251G.PDF ] | |
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