SX8661Z datasheet(45/87 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

5.3

Capacitive Sensors Parameters

Address

Name

Bits Description

0x09

CapModeMisc

7:3

Reserved (0x00)

2:0

IndividualSensitivity Defines common sensitivity for all sensors or individual sensor

sensitivity.

000: Common sensitivity settings (CapSensitivity0_1[7:4])

100: Individual sensitivity settings (CapSensitivityx_x)

Else : Reserved

0x0A

Reserved

7:0

Reserved (0x00)

0x0B

CapMode7_4

7:6

CAP7 Mode

Defines the mode of the CAP pin.

00: Disabled

01: Button

10: Reserved

11: Proximity (CAP0),

Reserved (CAP6,..CAP1)

5:4

CAP6 Mode

3:2

CAP5 Mode

1:0

CAP4 Mode

0x0C

CapMode3_0

7:6

CAP3 Mode

5:4

CAP2 Mode

3:2

CAP1 Mode

1:0

CAP0 Mode

0x0D

CapSensitivity0_1

7:4

CAP0 Sensitivity - Common Sensitivity

Defines the sensitivity.

0x0: Minimum

0x1: 1

…

0x7: Maximum

0x8..0xF: Reserved

3:0

CAP1 Sensitivity

0x0E

CapSensitivity2_3

7:4

CAP2 Sensitivity

3:0

CAP3 Sensitivity

0x0F

CapSensitivity4_5

7:4

CAP4 Sensitivity

3:0

CAP5 Sensitivity

0x10

CapSensitivity6_7

7:4

CAP6 Sensitivity

3:0

CAP7 Sensitivity

0x11

Reserved

7:0

Reserved (0x00)

0x12

Reserved

7:0

Reserved (0x00)

0x13

CapThresh0

7:0

CAP0 Touch Threshold

Defines the Touch Threshold ticks.

0x00: 0,

0x01: 4,

…

0xA0: 640

…

0xFF: 1020

0x14

CapThresh1

7:0

CAP1 Touch Threshold

0x15

CapThresh2

7:0

CAP2 Touch Threshold

0x16

CapThresh3

7:0

CAP3 Touch Threshold

0x17

CapThresh4

7:0

CAP4 Touch Threshold

0x18

CapThresh5

7:0

CAP5 Touch Threshold

0x19

CapThresh6

7:0

CAP6 Touch Threshold

0x1A

CapThresh7

7:0

CAP7 Touch Threshold

0x1B

CapPerComp

7:4

Reserved (0x00)

3:0

Periodic Offset Compensation

Defines the periodic offset compensation.

0x0: OFF

0x1: 1 second

0x2: 2 seconds

…

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