SX8644EVK Semtech, SX8644EVK Datasheet - Page 31

Manufacturer Part Number

SX8644EVK

Description

Manufacturer

Semtech

Datasheet

1.SX8644EVK.pdf (76 pages)

Lead Free Status / RoHS Status

Not Compliant

SX8644

Ultra Low Power, Capacitive Button and Slider

Touch Controller (12 sensors) with Enhanced LED Drivers

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

3.17 Smart Wake Up

The SX8644 offers a smart wake up mechanism which allows waking-up from the Doze low power mode to the

Active mode in a secure/controlled way and not by any unintentional sensor activation.

Until the full correct wake-up sequence is entered, the SX8644 will remain in Doze mode. Any wrong key implies

the whole sequence to be entered again.

A sequence of up to 6 keys can be defined. Each key must be followed by a release to be validated.

The smart wake-up mechanism can also be disabled which implies that Doze mode can hence only be exited

from GPI or I2C command.

Revision 7_3, January 10