Dear all
I have a question about BQ27546. How to configure to make SE pin output high level when OTC event.
Thanks
zeng
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Dear all
I have a question about BQ27546. How to configure to make SE pin output high level when OTC event.
Thanks
zeng
Hello Liqang,
You cannot configure the SE pin as an interrupt. You can configure the OTC to trigger the HDQ pin for interrupt.
[EDIT] You can configure the SE pin for interrupts based on section 2.4.2 Interrupt Mode of the TRM.
All the information is in the TRM, some of the configuration settings are in section 2.2 Li-Ion Protection.
Sincerely,
Wyatt Keller
Hi Wyatt
Well note and thanks for your reply.
I did get the SE pin high level when OTC event. But , I encountered another problem. when the OTC clear , HDQ or SE can not reset to low level. it still keep high level.
Sincerely.
ZENG
Hi Wyatt
Well note and thanks for your reply.
I did get the SE pin high level when OTC event. But , I encountered another problem. when the OTC clear , HDQ or SE can not reset to low level. it still keep high level.
Sincerely.
ZENG
Hello Zeng,
Sorry for the confusion, I have corrected my previous post.
What is the configuration of your interrupt bits? SE_PU and INTPOL along with your design can influence how the interrupt is cleared.
Sincerely,
Wyatt Keller
Both SE_PU and INTPOL are set to 1. But still fail to achive SE reset to low level.
Best regards
zeng
Hello Zeng,
How are you able to reset the interrupt? Is the only way to reset the gauge? With that configuration you should see the interrupt clear when OTC is cleared, as long as there are no other interrupts present.
Sincerely,
Wyatt Keller