SX8663 datasheet(23/64 Pages) SEMTECH

Part #	SX8663

Description	Capacitive Button Matrix (up to 36) and Proximity Controller with Individual LED Drivers and Buzzer Output

PDF	64 Pages

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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23 / 64 page

ADVANCED COMMUNICATIONS & SENSING

Rev5 4

th August 2011

www.semtech.com

SX8663

Capacitive Button Matrix (up to 36) and Proximity Controller

with Individual LED Drivers and Buzzer Output

During the power on period the SX8663 stabilizes the internal regulators, RC clocks and the firmware initializes all

registers.

During the power up the SX8663 is not accessible and I2C communications are forbidden.

As soon as the INTB rises the SX8663 will be ready for I2C communication.

3.14.2 RESETB

When RESETB is driven low the SX8663 will reset and start the power up sequence as soon as RESETB is

driven high or pulled high.

In case the user does not require a hardware reset control pin then the RESETB pin can be connected to VDD.

Figure 20

Hardware Reset

3.14.3 Software Reset

To perform a software reset the host needs to write 0xDE followed by 0x00 at the SoftReset register at address

0xB1.

Figure 21

Software Reset

SX8663 Datasheet(PDF) 23 Page - Semtech Corporation