TTP259-ASFN datasheet(63/81 Pages) TONTEK

No. de pieza	TTP259-ASFN

Descripción Electrónicos	Preliminary

PDF	81 Pages

Scroll/Zoom	100%

Fabricante Electrónico	TONTEK [Tontek Design Technology]

Página de inicio	http://www.tontek.com.tw

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63 / 81 page

Preliminary

TTP259

TonTouch

2015/05/25

Page 63 of 81

Ver: 1.1

.. IO port with external interrupt trigger input

The standard input/output port has the IO control register for

switching input or output mode and data register stores the output data in

output mode. If IO control data=1 and output data=1, the IO port is

programmed as input with pull-up resistor and also actives the wake-up

function. User intends to read the port data with differed read instruction.

The read PxI is reading data comes from IO pad data. The data register

reading result will have the same value with output register data. If enable

internal output, the IO port must set as output (IO control data=0). An

additional feature supports the external interrupt trigger input.

IO control data

Output data

Pull-up

Wake-up

feature

External

input

Enable

X: don’t care the value

IO control data

IO pad

Output internal data

IO pad input data

Read PxI

Read input data

IO pad data

TTP259-ASFN Datasheet(PDF) 63 Page - Tontek Design Technology