SX8661Z datasheet(41/87 Pages) SEMTECH

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ADVANCED COMMUNICATIONS & SENSING

DATASHEET

Revision v4.0, February 2016

www.semtech.com

SX8661Z

Low Power, Capacitive Button Touch and Proximity Controller

(8 sensors) with LED Drivers and Analog Output

DETAILED CONFIGURATION DESCRIPTIONS

5.1

Introduction

The SX8661Z configuration parameters are taken from the QSM or the NVM and loaded into the SPM as

explained in the chapter ‘functional description’.

This chapter describes the details of the configuration parameters of the SX8661Z.

The SPM is split by functionality into 5 configuration sections:

• General section: operating modes,

• Capacitive Sensors section: related to lower level capacitive sensing,

• Proximity: defining parameters related to proximity sensing

• Button: related to the conversion from sensor data towards button information,

• AOI: defining parameters for the AOI

• Buzzer: defining parameters for the AOI

• Mapping: related to mapping of button information towards GPIO pins,

• GPIO: related to the setup of the GPIO pins.

The total address space of the SPM and the NVM is 128 bytes, from address 0x00 to address 0x7F.

Two types of memory addresses, data are accessible to the user.

• ‘application data’: Application dependent data that need to be configured by the user.

• ‘reserved’: Data that need to be maintained by the user to the QSM default values (i.e. when NVM is burned).

The Table 11 and Table 12 resume the complete SPM address space and show the ‘application data’ and

‘reserved’ addresses.

The SX8661Z has the first NVM burned and hence powers-up with the NVM1 settings.

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