Micro crystal RV-8063-C7, Руководство по применению

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Micro Crystal
Ultra Small Real-Time Clock Module with SPI-Bus Interface RV-8063-C7
October 2018 34/58 Rev. 1.1
COMPENSATION INTERRUPT FUNCTION 4.10.
It is possible to monitor when compensation pulses are applied. To enable Compensation Interrupt generation, bit
CIE (register Control1) has to be set logic 1. At every compensation cycle a pulse is generated on pin
INT
̅̅̅̅̅
by the
Pulse Generator 3. The pulse width depends on the Offset Mode (MODE bit). If multiple compensation pulses are
applied, an interrupt pulse is generated for each compensation pulse applied.
COMPENSATION PULSES WHEN MODE = 0 (NORMAL MODE) 4.10.1.
The compensation is triggered once every two hours and then compensation pulses are applied once per minute
until the programmed offset value has been compensated.
Compensation pulses when MODE = 0:
Compensation pulses
in steps
Update every n
th
hour Minute
Compensation pulses on
INT
̅̅̅̅̅
per minute
(1)
+1 or -1 2 00 1
+2 or -2 2 00 and 01 1
+3 or -3 2 00, 01, and 02 1
: : : :
+59 or -59 2 00 to 58 1
+60 or -60 2 00 to 59 1
+61 or -61
2 00 to 59 1
2nd and next hour 00 1
+62 or -62
2 00 to 59 1
2nd and next hour 00 and 01 1
+63 or -63
2 00 to 59 1
2nd and next hour 00, 01, and 02 1
-64
2 00 to 59 1
2nd and next hour 00, 01, 02, and 03 1
(1)
When MODE = 0, the compensation pulses on pin
INT
̅̅̅̅̅
are 15.625 ms wide.
In MODE = 0, CLKOUT and Timer Clock frequencies < 64 Hz are affected by the compensation pulses.
Effect of compensation pulses on frequencies when MODE = 0:
Frequency Effect of compensation
CLKOUT
32.768 kHz no effect
16.384 kHz no effect
8.192 kHz no effect
4.096 kHz no effect
2.048 kHz no effect
1.024 kHz no effect
1 Hz Frequency affected
Timer Clock
4.096 kHz no effect
64 Hz no effect
1 Hz Periods affected
1/60 Hz Periods affected