RV-8523 Datasheet, PDF (32/57 Pages) MICORO CRYSTAL SWITZERLAND – Real Time Clock

Micro Crystal
Real Time Clock / Calendar Module
RV-8523
9.7.2.CORRECTION WHEN MODE = 1
The correction is triggered once per minute and then correction pulses are applied once per second up to a
maximum of 60 pulses. When correction values greater than 60 pulses are used, additional correction pulses are
made in the 59th second.
Clock correction is made more frequently in MODE = 1; however, this can result in higher power consumption.
Correction pulses for MODE = 1:
Correction value
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
02
+62 or -62
02
02
+63 or -63
02
02
-64
02
02
Second
00
00 and 01
00, 01 and 02
:
00 to 58
00 to 59
00 to 58
59
00 to 58
59
00 to 58
59
00 to 58
59
Correction pulses on INT_1
per second¹⁾
1
1
1
:
1
1
1
2
1
2
1
4
1
5
1) _{The correction pulses on pin INT_x 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 output using a frequency below 4.096 kHz is also affected by the clock
correction.
Effect of clock correction for MODE = 1:
CLKOUT frequency (Hz)
Effect of correction
32’768
16’384
8’192
4’096
1’024
32
1
No effect
No effect
No effect
No effect
No effect
Affected
Affected
Timer source clock
frequency (Hz)
4’096
64
1
1_/60
1_/3600
-
-
Effect of correction
No effect
Affected
Affected
Affected
Affected
-
-
32/57