TJA1049T/3 CAN bus ZERO LOAD

[vijo]

Hi,

Accordingly to TJA1049 product datasheet rev 6 15-01-2018 CAN bus is OFF (ZERO LOAD) is when Vio is below Vuvd(VIO)

Accordingly to AH1021 rev 1.0 28-05-2010 CAN bus is OFF (ZERO LOAD) when VCC is below Vuvd(swoff)

What is the state of the CAN bus of a TJA1049T/3 when VCC is 0V and Vio is 3.3V ?

Viggo

[guoweisun]

Hi,

Please see AH1021 page10 table1 for the detail.

Thanks!

[vijo · Accepted solution]

thank you,

I'm asking, because the value Vuvd(swoff) is not in the datasheet rev. 6 15-01-2018.

another question:

when the TJA1049T/3 is in standby mode (pin 8 STB is high) CAN-H, CAN-L is biased to GND instead of VCC/2.

What is the bias current / resistance ?

Thanks.

II

[guoweisun]

Hi,

For all the bus line and CANH/L parameters you can only refer to datasheet page11 except it no more information.