Hello Champs,
One question popped up from customer side, regarding CC2533 Interrupt edge detection voltage level..
Customer application have tilt sensor(analog level) and it is connected to I/O port interrupt in CC2533 and detect falling interrupt.
They supplied 3.3V at VDD and I/O for tilt sensor levels are changing from 0 to VDD. (sometimes it moves very slowly).
But when the level is slowly going down, the interrupt is detecting around 2~1.5V.
And what customer want to know is .. what level would be the interrupt detection points when VDD become lower as like 2.xV?
Please advise me if you have any ideas. Thanks.
ps) Some discussion regarding VIH and VIL level when VDD<2.6V at below link, but it is level itself, not for interrupt edge detection level.
Regards,
Ernest Cho