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PCF85063ATT/AJ 数据表(PDF) 16 Page - NXP Semiconductors

部件名 PCF85063ATT/AJ
功能描述  Tiny Real-Time Clock/calendar with alarm function and I2C-bus
PDF  55 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF85063ATT/AJ 数据表(HTML) 16 Page - NXP Semiconductors

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NXP Semiconductors
PCF85063A
Tiny Real-Time Clock/calendar with alarm function and I2C-bus
Correction value
Update every nth minute
Second
Correction pulses on INT
per second[1]
+1 or -1
4
00
1
+2 or -2
4
00 and 01
1
+3 or -3
4
00, 01, and 02
1
:
:
:
:
+59 or -59
4
00 to 58
1
+60 or -60
4
00 to 59
1
4
00 to 58
1
+61 or -61
4
59
2
4
00 to 58
1
+62 or -62
4
59
3
4
00 to 58
1
+63 or -63
4
59
4
4
00 to 58
1
-64
4
59
5
Table 15. Correction pulses for MODE = 1
[1]
The correction pulses on pin INT are 1⁄1 024 s wide. For multiple pulses, they are repeated at an interval of 1⁄512 s.
In MODE = 1, any timer source clock using a frequency below 1.024 kHz is also affected by the clock correction
(see Table 16).
Frequency (Hz)
Effect of correction
CLKOUT
32 768
no effect
16 384
no effect
8 192
no effect
4 096
no effect
2 048
no effect
1 024
no effect
1
affected
Timer source clock
4 096
no effect
64
affected
1
affected
1⁄60
affected
Table 16. Effect of correction pulses on frequencies for MODE = 1
7.2.3.3 Offset calibration workflow
The calibration offset has to be calculated based on the time. Figure 11 shows the workflow how the offset
register values can be calculated:
PCF85063A
All information provided in this document is subject to legal disclaimers.
© 2023 NXP B.V. All rights reserved.
Product data sheet
Rev. 7.1 — 8 November 2023
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