S12 / MagniV MicrocontrollersのトピックRe: Reset assert time for S12ZNML/S12ZVMBA https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Reset-assert-time-for-S12ZNML-S12ZVMBA/m-p/672809#M14130 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>There is an internal RC filter which is characterized with the RP_MASK and RP_PASS values. Pulses smaller than 12ns are filtered, pulses greater than 22ns are not filtered. The internal RC filter is subject to some variance so pulses with a length between 12 and 22ns may or may not reset the device.</P><P></P><P>If you need your own RC filter, make sure that the reset pulse last less then 24us, as the <A href="http://www.nxp.com/assets/documents/data/en/application-notes/AN5207.pdf">Hardware Design Guidelines for S12ZVM Microcontrollers (AN5207)</A> explains.</P><P></P><P>Regards,</P><P>Daniel</P></BODY></HTML> Fri, 02 Jun 2017 09:19:02 GMT danielmartynek 2017-06-02T09:19:02Z Reset assert time for S12ZNML/S12ZVMBA https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Reset-assert-time-for-S12ZNML-S12ZVMBA/m-p/672808#M14129 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P>Want to know the minimum reset assert time on Reset pin for the MCU to execute reset for S12ZVML and S12ZVMBA.</P><P></P><P>Basically want to design the correct RC values for reset circuit: any guidelines on this?</P><P></P><P>I found some timing values related to Reset pin in the datasheet (attachment photo, highlighted terms), please explain them.</P><P></P><P>Thanks..</P></BODY></HTML> Fri, 02 Jun 2017 02:28:11 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Reset-assert-time-for-S12ZNML-S12ZVMBA/m-p/672808#M14129 rajivbandodkar 2017-06-02T02:28:11Z Re: Reset assert time for S12ZNML/S12ZVMBA https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Reset-assert-time-for-S12ZNML-S12ZVMBA/m-p/672809#M14130 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>There is an internal RC filter which is characterized with the RP_MASK and RP_PASS values. Pulses smaller than 12ns are filtered, pulses greater than 22ns are not filtered. The internal RC filter is subject to some variance so pulses with a length between 12 and 22ns may or may not reset the device.</P><P></P><P>If you need your own RC filter, make sure that the reset pulse last less then 24us, as the <A href="http://www.nxp.com/assets/documents/data/en/application-notes/AN5207.pdf">Hardware Design Guidelines for S12ZVM Microcontrollers (AN5207)</A> explains.</P><P></P><P>Regards,</P><P>Daniel</P></BODY></HTML> Fri, 02 Jun 2017 09:19:02 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Reset-assert-time-for-S12ZNML-S12ZVMBA/m-p/672809#M14130 danielmartynek 2017-06-02T09:19:02Z