S-35720C01A-K8T2U Datasheet, PDF (10/21 Pages) Seiko Instruments Inc – Low current consumption

FOR AUTOMOTIVE 125°C OPERATION WITH INTERRUPT TIME SETTING PIN CONVENIENCE TIMER
S-35720 Series
Rev.1.1_00
2. Handshake time-out
Handshak_{_}e_{___}t_{_}im_{__} e-out is a type to output "L" level interrupt signal from the INT pin.
After the RST pin changes from "L" to "H", the timer starts the operation. Then, the INT pin outputs "L" level when
the timer value matches the value set to the SET0 pin and the SET1 pin^*1. When the INT pin outputs "L" level, the
timer stops and maintains the timer value._{_______}
_______
The timer is reset by inputting "L" to the RST pin. After that, if "H" is input to the RST pin, the INT pin is set to "H"
and the
If "L" is
timer
input
restarts_{___}th_{__}e_{__}
to the RST
count-up action.
pin before the timer
value
matches
the
value
set
to
the
SET0
pin
and
the
SET1
pin^*1,
the
timer is reset.
*1. 4 types of interrupt time can be selected depending on the SET0 pin and the SET1 pin settings.
Remark The above description is the example of Nch open-drain output product.
In CMOS output product, the INT pin output is the inverse logic of Nch open-drain output product.
RST
Timer
Timer reset
Matchs the value set to
SET0 pin and SET 1 pin
Timer reset
Timer reset
Count-up action
Reset
Handshake time-out
Count-up action Count-up action
Reset
Reset
INT
The timer restarts The timer restarts
Figure 10 Output Timing of Handshake Time-out (Nch open-drain Output)
RST
Timer
INT
Timer reset
Matchs the value set to
SET0 pin and SET 1 pin
Timer reset
Timer reset
Count-up action
Reset
Handshake time-out
Count-up action Count-up action
Reset
Reset
The timer restarts The timer restarts
Figure 11 Output Timing of Handshake Time-out (CMOS Output)
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