UCD90160: How to connect the RESET pin

Binayak Shrestha88

Part Number: UCD90160

Hi,

From the looks of the datasheet, it seems that "Device Reset Section" has been removed in the latest version as mentioned in revision history page. May I know why?

Can someone suggest me what should be the circuit for RESET pin? I am confused on what to do with this pin. May be a schematic snapshot?

Warm Regards,

Binayak

over 8 years ago

0 yihe over 8 years ago

TI__Guru 66310 points

The RESET pin should have a 10-kohm pullup resistor to V33 and a 1-nF decoupling capacitor to ground. The componnets should be placed as close to the RESET pin as possible.
thanks

0 Binayak Shrestha88 over 8 years ago in reply to yihe

Expert 1520 points

Thanks yihe!
I was having this doubt because I saw some schematics where they used a ferrite bead inbetween the 3.3V supply and 10K resistor. Yet I am unable to see such recommendation anywhere else.

0 Binayak Shrestha88 over 8 years ago in reply to yihe

Expert 1520 points

Hi Yihe,

Thanks for the reply. I have a confusion though. I am attaching two diagrams: diagram A and diagram B.

Please let me know which one is correct.

Warm Regards,

Binayak

0 yihe over 8 years ago in reply to Binayak Shrestha88

TI__Guru 66310 points

A is the correct

0 Binayak Shrestha88 over 8 years ago in reply to yihe

Expert 1520 points

Thanks Yihe!

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UCD90160: How to connect the RESET pin