PT7C43190 Datasheet, PDF (27/32 Pages) Pericom Semiconductor Corporation – Real-time Clock Module

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 INT register 1 access and INT register 2 access
In read / write the INT register 1, data varies depending on the setting of the status register 2. Be sure to read / write the INT
register 1 after setting the status register 2. When setting the alarm by using the status register 2, these registers work as 3-byte
alarm time data registers, in other statuses, they work as 1-byte registers. When outputting the user-set frequency, they are the data
registers to set up the frequency. Read / write the INT register 2 after setting INT2AE in the status register 2. When INT2AE is in
"1", the INT register 2 works as for setting the 3-byte alarm time data. The INT register 2 does not have the function to output the
user-set frequency. Regarding details of each data, refer to "INT register 1 and INT register 2" in "Configuration of Register".
Caution Users cannot use both functions of alarm 1 interrupt and the output of user-set frequency simultaneously.
*1. 0: Status register 1 selected
1: Status register 2 selected
INT Register 1 Access and INT Register 2 Access
INT Register 1 (Data Register for output frequency) Access
2015-09-0015
PT0274-7 10/16/15
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