TTP259-ASFN datasheet(68/81 Pages) TONTEK

68 / 81 page

Preliminary

TTP259

TonTouch

2015/05/25

Page 68 of 81

Ver: 1.1

PEI[20BH]: Port E pad data reading address [R], default value [----]

Bit3

Bit2

Bit1

Bit0

Bit Name

PEI3

PEI2

PEI1

PEI0

Read/Write

PEI3~PEI0: Port E pad data.

PFI[20CH]: Port F pad data reading address [R], default value [----]

Bit3

Bit2

Bit1

Bit0

Bit Name

PFI3

PFI2

PFI1

PFI0

Read/Write

PFI3~PFI0: Port F pad data.

. IO Port’s Special function

When SpecIO is selected by mask option, PA0, PB0 and PB1 is special IO

function. It can output ODATA register to user. ODATA can be store Key touch

information by software. User set PA0 for input, PB0,PB1 for output. User can

use this function to get Key touch information.

When using special IO function, do not use IIC function. If not, PB0,PB1

are unexpected signal.

ODATA[21FH]: Touch pad output register for special function [R/W], default value [0000

]

Bit3

Bit2

Bit1

Bit0

Bit Name

ODATA3

ODATA2

ODATA1

ODATA0

Read/Write

R/W

ODATA3~ODATA0: Touch pad information.

PA0 (input)

PB0 (output)

PB1(output)

ODATA0

ODATA1

ODATA2

ODATA3

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