TCAN4550EVM: when tcan4550 work in sleep mode ,how can i wake up it

user6487614

Prodigy 70 points

Part Number: TCAN4550EVM
Other Parts Discussed in Thread: TCAN4550

Dear SIr,

We use tcan4550 work in sleep mode for low power.

But I do not know how to wake up it by can bus?

How to send "WUP" pattern?

Otherwise is tcan4550 can wake up by any can bus message?

Regards,

over 3 years ago

0 Eric Schott1 over 3 years ago

TI__Guru 50795 points

Hi Xu,

The wake up pattern (WUP) used to wake TCAN4550 from sleep mode is described in Figure 8-6 of the device's datasheet. Put simply, this pattern is a filtered dominant-recessive-dominant transition on the CAN bus. The requirements for this pattern are intentionally kept quite broad so that the device will wake up on any valid CAN frame. So in a sense, any CAN message can be used as a WUP.

Let me know if you have any more questions.

Regards,
Eric Schott

Interface

Interface forum

TCAN4550EVM: when tcan4550 work in sleep mode ,how can i wake up it