EM6812F2TP24B datasheet(36/81 Pages) EMMICRO

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EM6812

www.emmicroelectronic.com

10.1.2 Register map, PA IO functions

Table 30. Port A Registers overview

Functions

Basic function

RegInPA

Direct read of input terminal state

RegOutPA

Data output register

Base

RegIOSelPA

Direction selection

RegPullUpPA

Pull-up resistor selection

RegPullDownPA

Pull-down resistor selection

Pull resistor and

open drain

RegOpenDrainPA

Enable n-channel open drain output

RegIntEdgPA

Interrupt edge selection

IRQ related

RegEnDebPA

Debouncer selection for interrupt signal

Reset and Wake-up

RegCfgPA

Reset and wake up system configuration,

RC Oscillation Loop selection

RegMskRstWkUp

Combination mask selection

Reset and Wake-up

RegCmbKey

Reset or wake-up key

Table 31.

Port A Registers

RegInPA

0x21

Input register

Bit

Name

Res

Reset by

R/W

Description

7-0

PAIn[7:0]

Direct read of input terminal state

‘0’=read low, ‘1’= read high

RegOutPA

0x22

Output data

Bit

Name

Res

Reset by

R/W

Description

7-0

OutPA[7:0]

ResSys

R/W

Data output register

‘0’= output low, ‘1’=output high

RegIOSelPA

0x24

Direction setting

Bit

Name

Res

Reset by

R/W

Description

7-0

IOSelPA[7:0]

ResSys

R/W

Direction selection;

‘1’=Output, ‘0’=Input

RegPullUpPA

0x2A

Pull-up selection

Bit

Name

Res

Reset by

R/W

Description

7-0

PullUpPA[7:0]

ResMain

R/W

Pull-up resistor selection

‘0’=no pull-up, ‘1’=pull-up enabled

RegPullDownPA

0x2B

Pull-down selection

Bit

Name

Res

Reset by

R/W

Description

7-0

PullDownPA[7:0]

ResMain

R/W

Pull-down resistor selection

‘0’=no pull-down, ‘1’=pull-down enabled (if no pull-

up)

RegOpenDrainPA

0x29

N-channel Open drain selection

Bit

Name

Res

Reset by

R/W

Description

7-0

OpenDrainPA[7:0]

ResMain

R/W

N-channel open drain selection (if output)

‘0’=CMOS mode, ‘1’= open drain enabled

EM6812F2TP24B Datasheet(PDF) 36 Page - EM Microelectronic - MARIN SA

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