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TCA8418: Low power mode

smitesh mali1
Intellectual 900 points

Part Number: TCA8418

Hi,

I am using TCA8418 keypad Scan IC. 

I am using this IC for 4x3 keypad scanning and we are also using it to control 3 LEDs through its GPIO. 

I have observed that if i initialize the 3 LED GPIO in output direction with GPIO in high state then we are getting 5 uA current from this IC.

But if i initialize these 3 GPIO in output direction with GPIO in Low state then i am getting around 100 uA current (Around 34 uA per GPIO).

I have also disconnected all components connected to these GPIO to make sure there is no issue due to external components.  

But still getting 100 uA current.

Regards,

Smitesh Mali