topic Re: RTC: Setting time - protection? in ColdFire/68K Microcontrollers and Processors https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/RTC-Setting-time-protection/m-p/152495#M4078 <HTML><HEAD></HEAD><BODY>It might help to write the seconds register first. If you make sure not to write '59' as value, the seconds will not overflow during the write of the other registers.</BODY></HTML> Sat, 07 Nov 2009 01:50:55 GMT vier_kuifjes 2009-11-07T01:50:55Z RTC: Setting time - protection? https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/RTC-Setting-time-protection/m-p/152494#M4077 <HTML><HEAD></HEAD><BODY><P>Is there any preferred way of setting the RTC registers, so that the operation is 'atomic'?</P><P>The 52259 rm is not really helpful on this, but I fear that there may be a second change while I am writing the new time.&nbsp;</P></BODY></HTML> Fri, 06 Nov 2009 19:58:21 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/RTC-Setting-time-protection/m-p/152494#M4077 vespaman 2009-11-06T19:58:21Z Re: RTC: Setting time - protection? https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/RTC-Setting-time-protection/m-p/152495#M4078 <HTML><HEAD></HEAD><BODY>It might help to write the seconds register first. If you make sure not to write '59' as value, the seconds will not overflow during the write of the other registers.</BODY></HTML> Sat, 07 Nov 2009 01:50:55 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/RTC-Setting-time-protection/m-p/152495#M4078 vier_kuifjes 2009-11-07T01:50:55Z