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PCF8523 датащи(PDF) 29 Page - NXP Semiconductors

номер детали PCF8523
подробное описание детали  Real-Time Clock (RTC) and calendar
PDF  66 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8523 датащи(HTML) 29 Page - NXP Semiconductors

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PCF8523
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3 — 30 March 2011
29 of 66
NXP Semiconductors
PCF8523
Real-Time Clock (RTC) and calendar
[1]
The correction pulses on pin INT1 are 1
4096 s wide. For multiple pulses they are repeated at an interval of
1
2048 s.
In MODE = 1, any timer source clock using a frequency below 4.096 kHz will be also
affected by the clock correction (see Table 31).
Table 30.
Correction pulses for MODE = 1
Correction value
Minute
Second
Correction pulses on
INT1 per second[1]
+1 or
1
02001
+2 or
2
02
00 and 01
1
+3 or
3
02
00, 01, and 02
1
::::
+59 or
59
02
00 to 58
1
+60 or
60
02
00 to 59
1
+61 or
61
02
00 to 58
1
02
59
2
+62 or
62
02
00 to 58
1
02
59
2
+63 or
63
02
00 to 58
1
02
59
4
64
02
00 to 58
1
02
59
5
Table 31.
Effect of clock correction for MODE = 1
CLKOUT frequency (Hz)
Effect of correction
Timer source clock
frequency (Hz)
Effect of
correction
32768
no effect
4096
no effect
16384
no effect
64
effected
8192
no effect
1
effected
4096
no effect
1
60
effected
1024
no effect
1
3600
effected
32
effected
-
-
1effected
-
-



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