DS-72-35 Datasheet, PDF (11/14 Pages) Cymbet Corporation – EnerChip™ RTC Evaluation Kit

Preliminary
CBC-EVAL-12-34123 EnerChip RTC Evaluation Kit
20. The system set-up is now complete. Once the countdown timer or date and time have been set, the
integrated EnerChip battery can be used to maintain the timer or real time by either disabling power from the
dongle by clicking the ‘RTC EC Power’ button or removing the dongle from the USB port. In the absence of USB
power, the EnerChip will provide power to the PCF2123 RTC for up to 30 hours. Simply re-insert the dongle or
re-apply power to verify that the countdown timer or time and date were maintained while the dongle was not
under USB power.
RTC Register Access
The PCF2123 registers are also accessible through the EVAL-12 GUI. Select the ‘Show RTC Registers’ option to
view and modify the RTC register settings as shown below.
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DS-72-35 V0.7

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