Floating Interrupt

[thilo]

Posted on May 19, 2003 at 07:13

Floating Interrupt

[thilo]

Posted on May 16, 2003 at 11:24

Hello all,

I have a question: what is the purpose of the floating interrupt input and how can I use them? Thanks for your help.

[rolf]

Posted on May 19, 2003 at 07:08

Hi Thilo,

the floating interrupt input is usefull if your signal which is generating this interrupt is for example a TTL of CMOS signal. In that case you don't need an internal pull-up resistor. An internal pull-up would cause an additionl current consumption if the external signal is low. Especially during a low-power mode this extra current should be avoided. Rolf

[sjo]

Posted on May 19, 2003 at 07:13

This give you the option to use a pullup/down resistor of your choice rather than using the builtin pullup resistor.

Regards SJO