topic Re: E620 CPU RTC question in Embedded Intel Atom® Processors

E620 CPU RTC question

lyuqi — Mon, 05 May 2014 01:38:14 GMT

Hi,

We have a customized E620 Q7 board, as we want to calculate the battery lifespan for the RTC, my question is what is the current consumption on the VCC33RTC pin(M13) when the power is off as well as the leakage current of the RTCRST_B pin (AA2)

Thank you

Re: E620 CPU RTC question

WILLIAM_C_Intel — Mon, 05 May 2014 08:43:34 GMT

Hi Liyuqian,

The ICH/PCH RTC circuit is a low current circuit designed to provide accurate time keeping service, at an extremely low current consumption (IccRTC) a maximum of 5 or 6 μA. For further information you could find it on Section 2 Page 9 of https://www-ssl.intel.com/content/dam/doc/application-note/ich-family-real-time-clock-accuracy-considerations-note.pdf Intel® I/O Controller Hub (Intel® ICH) /Platform Controller Hub (PCH) Family Real Time Clock (RTC). Good luck!

Best regards,

William

Re: E620 CPU RTC question

lyuqi — Mon, 05 May 2014 08:55:18 GMT

Hi William,

Thanks for you quick reply, that document is very helpful for me

Yuqian