PT7C43190 Datasheet, PDF (18/32 Pages) Pericom Semiconductor Corporation – Real-time Clock Module

|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
*1. Pin output is set to "H" by disabling the output mode within 7.81 ms, because the signal of this procedure is maintained for
7.81ms. Note that pin output is set to "L" by setting enable the output mode again.
Timing of Per-Minute Edge Interrupt Output
d. Minute-periodical interrupt output 1
The minute-periodical interrupt 1 is the function to output the one-minute clock pulse (Duty 50%) from the INT pin, when the first
minute-carry processing is done, after selecting the output mode.
*1. Setting the output mode disable makes the pin output "H", while the output from the INT pin is in "L". Note that pin output is
set to "L" by setting enable the output mode again.
Timing of Minute-periodical Interrupt Output 1
e. Minute-periodical interrupt output 2
The output of minute-periodical interrupt 2 is the function to output "L", for 7.81 ms, from the INT pin, synchronizing with the
first minute-carry processing after selecting the output mode. However, during reading in the real-time data register, the procedure
delays at max. 0.5 seconds thus output "L" from the INT pin also delays at max. 0.5 seconds during writing in the real-time data
register, some delay is made in the output period due to write timing and the second-data during writing.
 During normal operation
2015-09-0015
PT0274-7 10/16/15
18