Other NXP Products中的主题 Re: SC16IS750 interrupt https://community.nxp.com/t5/Other-NXP-Products/SC16IS750-interrupt/m-p/675319#M4755 <HTML><HEAD></HEAD><BODY><P>No infos?</P></BODY></HTML> Mon, 15 May 2017 13:07:47 GMT robertkaliauer 2017-05-15T13:07:47Z SC16IS750 interrupt https://community.nxp.com/t5/Other-NXP-Products/SC16IS750-interrupt/m-p/675318#M4754 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I'd like to use&nbsp;SC16IS750 to bridge I2C to UART. Therefore I would like to use IRQ functionality to prevent software from the requirement to poll for status. For the physical connection in datasheet is mentioned, to use 1k pull-up for 3V3 or 1k5 for 2V5 supply. Would it be possible to use 100k connected to 1V8 power supply as well? &nbsp;The point is, that I have some host device which hs&nbsp;just 1V8 compatible pins and I'd like to prevent some additional level shifters.</P><P>I'm just wondering about pull-up resistor value requirement as based on datasheet, IRQ pin is able to sink up to 4mA, why does pull-up resistor for 2V5 be higher than connected to 3V3?</P><P></P><P>BR</P><P>Robert</P></BODY></HTML> Wed, 10 May 2017 13:17:19 GMT https://community.nxp.com/t5/Other-NXP-Products/SC16IS750-interrupt/m-p/675318#M4754 robertkaliauer 2017-05-10T13:17:19Z Re: SC16IS750 interrupt https://community.nxp.com/t5/Other-NXP-Products/SC16IS750-interrupt/m-p/675319#M4755 <HTML><HEAD></HEAD><BODY><P>No infos?</P></BODY></HTML> Mon, 15 May 2017 13:07:47 GMT https://community.nxp.com/t5/Other-NXP-Products/SC16IS750-interrupt/m-p/675319#M4755 robertkaliauer 2017-05-15T13:07:47Z