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PCF2123 Datasheet(PDF) 43 Page - NXP Semiconductors

Part # PCF2123
Description  SPI Real time clock/calendar Time keeping application
PDF  63 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF2123 Datasheet(HTML) 43 Page - NXP Semiconductors

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PCF2123
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 5 — 27 April 2011
43 of 63
NXP Semiconductors
PCF2123
SPI Real time clock/calendar
Fig 28. SPI-bus timing
001aai554
R/W
SA2
RA0
b7
b6
b0
b7
b6
b0
b0
b6
b7
SDI
SDO
SDO
Hi Z
Hi Z
SDI
SCL
CE
WRITE
READ
tw(CE)
80%
20%
tclk(L)
tf
th(CE)
trec(CE)
tdis(SDO)
td(R)SDO
tt(SDI-SDO)
tr
th
tsu
tclk(H)
tSCL
tsu(CE)



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