SX8124ISTRT SEMTECH [Semtech Corporation], SX8124ISTRT Datasheet - Page 14

• Manufacturer Part Number: SX8124ISTRT
• Description: 24 hours timer synchronized on 50/60Hz mains
• Manufacturer: SEMTECH [Semtech Corporation]

ACS - Revision 2.4
© Semtech Corp.
9.2
ADVANCED COMMUNICATIONS & SENSING
Reset with the DURATION pin
Moving the DURATION voltage to 0V and then moving it back to the desired duration will reset the 24 hours
timer. This can be done either with a switch in parallel with the DURATION resistive divider or if this divider is
made with a potentiometer by turning this potentiometer to 0 leaving it there for a few seconds and then
bring it back to the desired position.
The voltage on DURATION pin remains ratiometric to VDD while VDD is below 1.8V.
Additionally, if the voltage on DURATION pin exceeds |1.8V| the timer is reinitialized.
DURATION
NOUT
OUT
6h
Figure 14. Manual reset moving DURATION pin voltage down to 0V
0h 24h
reset
October 2010
12h
Figure 13. Timer reset by pushing DURATION pin to ground
start
18h
Page 14
toggle at set duration
24 hours timer synchronized on 50/60Hz mains
24h cycle
DURATION
SX8124
www.semtech.com/products/
SX8124
VDD
VSS
DATASHEET
(re)start