https://community.nxp.com/t5/i-MX-Processors/The-Differences-between-CMOS-and-Schmitt-Trigger-in-HYS-Bit/m-p/338111#M46176 <HTML><HEAD></HEAD><BODY><P>Hi, all</P><P>&nbsp;&nbsp;&nbsp;&nbsp; in MX6SL/DL, I dont know the option about the input type between CMOS trigger and schmitt trigger in HYS bit(<SPAN style="color: black; font-size: 12pt; font-family: 'Gill Sans MT';">1 bit hysteresis control</SPAN>),could you tell me in detail how to select these bits in different conditions?</P><P>3Q~</P></BODY></HTML> Mon, 23 Mar 2015 00:08:10 GMT tony_l_cai 2015-03-23T00:08:10Z https://community.nxp.com/t5/i-MX-Processors/The-Differences-between-CMOS-and-Schmitt-Trigger-in-HYS-Bit/m-p/338111#M46176 <HTML><HEAD></HEAD><BODY><P>Hi, all</P><P>&nbsp;&nbsp;&nbsp;&nbsp; in MX6SL/DL, I dont know the option about the input type between CMOS trigger and schmitt trigger in HYS bit(<SPAN style="color: black; font-size: 12pt; font-family: 'Gill Sans MT';">1 bit hysteresis control</SPAN>),could you tell me in detail how to select these bits in different conditions?</P><P>3Q~</P></BODY></HTML> Mon, 23 Mar 2015 00:08:10 GMT https://community.nxp.com/t5/i-MX-Processors/The-Differences-between-CMOS-and-Schmitt-Trigger-in-HYS-Bit/m-p/338111#M46176 tony_l_cai 2015-03-23T00:08:10Z https://community.nxp.com/t5/i-MX-Processors/The-Differences-between-CMOS-and-Schmitt-Trigger-in-HYS-Bit/m-p/338112#M46177 <HTML><HEAD></HEAD><BODY><P>Hi tony</P><P></P><P>when HYS=0, DISABLED — CMOS input, then</P><P>VIH,VIL are defined in Table 23. GPIO DC Parameters <A href="http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6SDLCEC.pdf?fasp=1&amp;WT_TYPE=Data%20Sheets&amp;WT_VENDOR=FREESCALE&amp;WT_FILE_FORMAT=pdf&amp;WT_ASSET=Documentation&amp;fileExt=.pdf">IMX6SDLCEC</A></P><P></P><P>when HYS=1, ENABLED — Schmitt trigger input, then</P><P>Input Hysteresis is turned on at input curcuit (see Table 23)</P><P><A href="http://en.wikipedia.org/wiki/Hysteresis" title="http://en.wikipedia.org/wiki/Hysteresis">Hysteresis - Wikipedia, the free encyclopedia</A></P><P></P><P>Best regards</P><P>igor</P><P>-----------------------------------------------------------------------------------------------------------------------</P><P>Note: If this post answers your question, please click the Correct Answer button. Thank you!</P><P>-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Mon, 23 Mar 2015 04:37:50 GMT https://community.nxp.com/t5/i-MX-Processors/The-Differences-between-CMOS-and-Schmitt-Trigger-in-HYS-Bit/m-p/338112#M46177 igorpadykov 2015-03-23T04:37:50Z