PT7C43190 Datasheet, PDF (17/32 Pages) Pericom Semiconductor Corporation – Real-time Clock Module

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 Alarm setting of “H (hour)"
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*1. If users clear INT1AE / INT2AE once; "L" is not output from the INT pin by setting INT1AE / INT2AE enable again, within a
period when the alarm time matches real-time data.
*2. If turning the alarm output on by changing the program, within the period when the alarm time matches real-time data, "L" is
output again from the INT pin when the minute is counted up.
Alarm Interrupt Output Timing
b. Output of user-set frequency
The output of user-set frequency is the function to output the frequency which is selected by using data, from the INT pin, in the
AND-form. Set up the data of frequency in the INT register 1.
Output Timing of User-set Frequency
c. Per-minute Edge Interrupt Output
Per-minute edge interrupt output is the function to output "L" from the INT pin, when the first minute-carry processing is done,
after selecting the output mode. To set the pin output to "H", set "0" in INT1ME in the status register 2 to turn off the output mode
of per-minute edge interrupt.
2015-09-0015
PT0274-7 10/16/15
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