
NXP Semiconductors
10. Internal circuitry
PCF2123
SPI Real time clock/calendar
PCF2123
VDD
OSCI
OSCO
TEST
INT
CE
VSS
CLKOE
CLKOUT
SCL
SDI
SDO
001aai552
Fig 27. Device diode protection diagram of PCF2123
PCF2123
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 27 April 2011
© NXP B.V. 2011. All rights reserved.
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