PC8523-1(2012) 查看數據表（PDF） - NXP Semiconductors.
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PC8523-1 Datasheet PDF : 74 Pages
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NXP Semiconductors
PCF8523
Real-Time Clock (RTC) and calendar
8.8.1 Correction when MODE = 0
The correction is triggered once per two hours and then correction pulses are applied
once per minute until the programmed correction values have been implemented.
Table 30. Correction pulses for MODE = 0
Correction value
Hour
Minute
+1 or 1
02
+2 or 2
02
+3 or 3
02
:
:
+59 or 59
02
+60 or 60
02
+61 or 61
02
03
+62 or 62
02
03
+63 or 63
02
03
64
02
03
00
00 and 01
00, 01, and 02
:
00 to 58
00 to 59
00 to 59
00
00 to 59
00 and 01
00 to 59
00, 01, and 02
00 to 59
00, 01, 02, and 03
Correction pulses on
INT1 per minute[1]
1
1
1
:
1
1
1
1
1
1
1
1
1
1
[1] The correction pulses on pin INT1 are 1⁄64 s wide.
In MODE = 0, any timer or clock output using a frequency below 64 Hz is affected by the
clock correction (see Table 31).
Table 31. Effect of clock correction for MODE = 0
CLKOUT frequency (Hz) Effect of correction Timer source clock
frequency (Hz)
32 768
no effect
4 096
16 384
no effect
64
8 192
no effect
1
4 096
1 024
32
no effect
no effect
affected
1⁄60
1⁄3 600
-
1
affected
-
Effect of
correction
no effect
no effect
affected
affected
affected
-
-
PCF8523
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 5 July 2012
© NXP B.V. 2012. All rights reserved.
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