Rev. 1.32

11

January 19, 2016

BS812A-1/BS813A-1/BS814A-1/BS814A-2

BS816A-1/BS818A-2/BS8112A-3/BS8116A-3

BS8112A-3andBS8116A-3Touch-keyStatusDataRegisters

Address

Name

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

R/W

08H

KeyStatus0

Key8

Key7

Key6

Key5

Key4

Key3

Key2

Key1

R

09H

KeyStatus1 Key16

(Note)

Key15

(Note)

Key14

(Note)

Key13

(Note)

Key12

Key11

Key10

Key9

R

Note:Key16~Key13areonlyfortheBS8116A-3device.

0=notouch,1=touch

BS8112A-3 Write Setting Register

WhenthemasterwillwritethesettingbytetotheBS8112A-3,itmustwrite18datebytesconsecutivelywiththe

startbyteof0xB0andthelastbyteofthechecksum.

Start

Slave

Address

A

C

K

W

NO ACK

Stop

A

C

K

A

C

K

A

C

K

0xB0

A

C

K

CheckSum

Whenthesettingischanged,theTouchKeymodulewillbereset.Forabout0.5slatertheTouchKeymodulecan

normallyoperateafterreset.

BS8112A-3 Read Setting Register

ThemasterreadasettingbyteoftheBS8112A-3.

Start

Slave

Address

A

C

K

W

A

C

K

R

Start

A

C

K

NO ACK

Stop

Slave

Address

0xB0~0xC0

DATA

ThemasterreadnsettingbytesoftheBS8112A-3.

Start

Slave

Address

A

C

K

W

A

C

K

Start

NO ACK

Stop

Slave

Address

A

C

K

R

A

C

K

Address

DATA1

A

C

K

DATAn

DATA

BS8112A-3Touch-keySettingRegisters

Address

Name

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

R/W

B0H

Option1

—

IRQ_OMS

R/W

B1H

Reserve

0x00

R/W

B2H

Reserve

0x83

R/W

B3H

Reserve

0xF3

R/W

B4H

Option2

1

LSC

0

1

1

0

0

0

R/W

B5H

K1_TH

K1WU

0

Key1 Trigger threshold value

R/W

B6H

K2_TH

K2WU

0

Key2 Trigger threshold value

R/W

B7H

K3_TH

K3WU

0

Key3 Trigger threshold value

R/W

B8H

K4_TH

K4WU

0

Key4 Trigger threshold value

R/W

B9H

K5_TH

K5WU

0

Key5 Trigger threshold value

R/W

BAH

K6_TH

K6WU

0

Key6 Trigger threshold value

R/W

BBH

K7_TH

K7WU

0

Key7 Trigger threshold value

R/W

BCH

K8_TH

K8WU

0

Key8 Trigger threshold value

R/W

BDH

K9_TH

K9WU

0

Key9 Trigger threshold value

R/W

BEH

K10_TH

K10WU

0

Key10 Trigger threshold value

R/W

BFH

K11_TH

K11WU

0

Key11 Trigger threshold value

R/W

C0H

K12_TH

K12WU

Mode

Key12 Trigger threshold value

R/W

BS8112A-3Key12/IRQFunctionSelection

Key12 Mode( bit6 of K12_TH)

Function

0

Key12

1

IRQ (Default)