DS-72-35 Datasheet, PDF (13/14 Pages) Cymbet Corporation – EnerChip™ RTC Evaluation Kit

Preliminary
CBC-EVAL-12-34123 EnerChip RTC Evaluation Kit
Reference Documents
CBC34123 EnerChip RTC Data Sheet: http://www.cymbet.com/pdfs/DS-72-31.pdf .
PCF2123 NXP Real-Time Clock Data Sheet: http://www.nxp.com/documents/data_sheet/PCF2123.pdf .
Crystal Selection Guide: UM10301 - User Manual for NXP Real Time Clocks:
http://www.nxp.com/documents/user_manual/UM10301.pdf .
CBC-EVAL-12-34123 Circuit Schematic
The schematic of Figure 4 depicts the CBC-EVAL-12-34123 RTC board. For the purpose of supporting hardware
development, CBC34123 package pins are accessible by way of through-hole vias 1-16 of J5 on the Tab Board.
Additional backup run time is supported by connecting external EnerChips to the CBC34123 by way of through-
hole vias 1-2 of J3.
Figure 4: CBC-EVAL-12-34123 EnerChip RTC Board Circuit Schematic.
Table 1: CBC-EVAL-12-34123 EnerChip RTC Board Bill of Materials.
©2013 Cymbet Corporation • Tel: [phone] • www.cymbet.com
DS-72-35 V0.7

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