Page 13

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

SX8124

24 hours timer synchronized on 50/60Hz mains

ACS - Revision 2.4

October 2010

© Semtech Corp.

9

Timer reset

9.1

Reset with the START pin

A button can be connected between the BUTTON pin and VSS. Holding START down during 3 seconds or

more resets the 24 hours timer and the system.

Pressing shortly the button changes the output state without modifying the internal counter.

Figure 11. Timer reset with the START button

Figure 12. Manual reset holding START pin down during 3 seconds or more

START

SX8124

VSS

VDD

> 3 seconds

start timer

(re)start timer

START

OUT

NOUT

(re)start

Long pulse

24h cycle

Long pulse

Toggle at set duration