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PCF2123 数据表(PDF) 8 Page - NXP Semiconductors

部件名 PCF2123
功能描述  Automotive tiny Real-Time Clock/calendar with alarm function and I2C-bus
PDF  59 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF2123 数据表(HTML) 8 Page - NXP Semiconductors

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PCA85063A
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet
Rev. 4 — 30 March 2018
8 of 59
NXP Semiconductors
PCA85063A
Automotive Real-Time Clock/calendar with alarm function and I2C-bus
8.2.1.2
STOP: STOP bit function
The function of the STOP bit (see Figure 4) is to allow for accurate starting of the time
circuits. The STOP bit function causes the upper part of the prescaler (F2 to F14) to be
held in reset and thus no 1 Hz ticks are generated. It also stops the output of clock
frequencies below 8 kHz on pin CLKOUT.
The time circuits can then be set and do not increment until the STOP bit is released (see
Figure 5 and Table 7).
Fig 4.
STOP bit functional diagram



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