4 ms·
Chip in question is power-management IC, with RTC being just one function of. Others are (programmable) power sequencing and suspend/resume state machine, all a
by nousermane 5y ago
Chip in question is power-management IC, with RTC being just one function of. Others are (programmable) power sequencing and suspend/resume state machine, all accessible via same I2C interface. Here is datasheet:
http://rockchip.fr/RK808%20datasheet%20V1.4.pdf http://rockchip.fr/RK808%20datasheet%20V1.4.pdf
- marcan_42 5y agoYes, and the RTC portion is going to be part of a separate always-on power domain and designed to consume single-digit microamps of power (5uA for this one). It's not going to involve a microcontroller.
- dTal 5y agoBut not necessarily the part that, on-demand, converts whatever kind of tick the RTC uses to human-convention dates.
- marcan_42 5y agoThat doesn't really make much sense as a design. If they were going to return calendar dates, they'd count in calendar dates. I can't think of a reason why someone would implement something like that, it's just not how these things are designed.