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PCF85263ATL/A 数据表(PDF) 32 Page - NXP Semiconductors

部件名 PCF85263ATL/A
功能描述  Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus
PDF  92 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF85263ATL/A 数据表(HTML) 32 Page - NXP Semiconductors

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NXP Semiconductors
PCF85263A
Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus
Correction value
Every nth hour
Actual minute
4 + 2
00, 01, and 02
4
00 to 59
4 + 1
00 to 59
-128
4 + 2
00 to 07
Table 25. Correction pulses for OFFM = 0...continued
7.8.2 Correction when OFFM = 1
The correction is triggered once every eight minutes and then correction pulses
are applied once per second until the programmed correction values have been
implemented.
Clock correction is made more frequently in OFFM = 1; however, this can result in higher
power consumption.
Correction value
Every nth minute
Actual second
+1 or -1
8
00
+2 or -2
8
00 and 01
+3 or -3
8
00, 01, and 02
:
:
:
+59 or -59
8
00 to 58
+60 or -60
8
00 to 59
8
00 to 59
+61 or -61
8 + 1
00
8
00 to 59
+62 or -62
8 + 1
00 and 01
:
:
:
8
00 to 59
8 + 1
00 to 59
+123 or -123
8 + 2
00, 01, and 02
8
00 to 59
8 + 1
00 to 59
-128
8 + 2
00 to 07
Table 26. Correction pulses for OFFM = 1
7.8.3 Offset calibration workflow
The calibration offset has to be calculated based on the time. Figure 20 shows the
workflow how the offset register values can be calculated:
PCF85263A
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
Product data sheet
Rev. 5 — 1 February 2021
32 / 92



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