TCA9555: TCA9555 state after startup

Herbert Wang

Part Number: TCA9555

Tool/software:

Dear Expert:

For TCA9555RGER, if it is pull-up state of the port in the default after startup?

0 Clemens Ladisch 6 months ago

Guru 317370 points

The pull-up resistors are always enabled.

0 Tyler Townsend 6 months ago

Hi Herbert,

This device has 100k PU resistors that are always enabled on the I/O side.

This device powers up with I/O's configured to INPUT's pulled HIGH to VCC through 100k PU resistor.

Regards,

Tyler

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