S-35740C01A-K8T2U Datasheet, PDF (11/31 Pages) Seiko Instruments Inc – Operation temperature range

FOR AUTOMOTIVE 125°C OPERATION 2-WIRE INTERVAL TIMER CONVENIENCE TIMER
Rev.1.1_00
S-35740 Series
 INT Pin Fixed-cycle Interrupt Signal Output
1. Frequency and duty ratio
The frequency and duty ratio of the fixed-cycle interrupt signal output is set in the fixed-cycle interrupt signal setting
register. By setting "1" to each bit of the fixed-cycle interrupt signal setting register, the frequency corresponding to
each bit (1 Hz to 1.024 kHz) is output depending on NAND logic, and the frequency and the duty ratio are changed.
The example of the fixed-cycle Interrupt signal output when 512 Hz = "1", 256 Hz = "1", 128 Hz = "1", 64 Hz = "1"
and others = "0" is shown below.
When all bits of the fixed-cycle interrupt signal setting register are "0", the INT pin outputs are fixed to Nch
open-drain output = "H" or CMOS output = "L".
Remark The above description is the example of Nch open-drain output product.
In CMOS output product, the frequency corresponding to each bit (1 Hz to 1.024 kHz) is output depending
on AND logic.
1.024 kHz
512 Hz
256 Hz
128 Hz
64 Hz
32 Hz
INT
0.98 ms
15.6 ms
Figure 11 Example of Fixed-cycle Interrupt Signal Output (Nch Open-drain output)
1.024 kHz
512 Hz
256 Hz
128 Hz
64 Hz
32 Hz
INT
0.98 ms
15.6 ms
Figure 12 Example of Fixed-cycle Interrupt Signal Output (CMOS output)
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