Technical data

SYSTEM CONNECTOR INTERFACE

LZT 123 8020 R1A

Parameter Min. Typ. Max. Units

Supply Voltage RTC (normal mode -

charging the capacitor)

1.6 1.8 2.0 V

Supply Voltage RTC (back-up mode -

Capacitor provides the current)

1.0 1.8 2.0 V

Current drawn 5.0 10.0 µA

If the voltage drops below 1.0 V in back-up mode, the RTC will

stop working. The following diagram shows the RTC

connections.

Figure 5.13 RTC connections