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PCF2123TS Datasheet(PDF) 8 Page - NXP Semiconductors

No. de pieza PCF2123TS
Descripción Electrónicos  SPI Real time clock/calendar
PDF  54 Pages
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Fabricante Electrónico  NXP [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF2123TS Datasheet(HTML) 8 Page - NXP Semiconductors

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PCF2123_1
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 19 November 2008
8 of 54
NXP Semiconductors
PCF2123
SPI Real time clock/calendar
9.1.2 Power consumptions with respect to timer mode
Four source clocks are possible for the timer. The 4.096 kHz source clock will add the
greatest part to the power consumption. The selection of 64 Hz, 1 Hz or 1
⁄
60 Hz will be
almost indistinguishable and add very little.
Configuration: CLKOUT disabled, quartz RS =15kΩ.
(1) IDD (nA) minimum power mode.
(2) Timer clock = 4 kHz.
(3) Timer clock = 64 Hz, 1 Hz, 1
⁄
60 Hz.
Fig 7.
IDD with respect to timer clock selection
VDD (V)
0
6
4
2
001aai559
200
100
300
400
IDD(1)
(nA)
0
(2)
(3)



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