SX8661 datasheet(29/88 Pages) SEMTECH

Part #	SX8661

Description	Low Power, Capacitive Button Touch and Proximity Controller

PDF	88 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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ADVANCED COMMUNICATIONS & SENSING

DATASHEET

Revision v3.2, January 2011

www.semtech.com

SX8661

Low Power, Capacitive Button Touch and Proximity Controller

(8 sensors) with LED Drivers and Analog Output

During the power on period the SX8661 stabilizes the internal regulators, RC clocks and the firmware initializes all

registers.

During the power up the SX8661 is not accessible and I2C communications are forbidden.

As soon as the INTB rises the SX8661 will be ready for I2C communication.

3.17.2 RESETB

When RESETB is driven low the SX8661 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 26

Hardware Reset

3.17.3 Software Reset

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

0xB1.

Figure 27

Software Reset

SX8661 Datasheet(PDF) 29 Page - Semtech Corporation