EM6517 datasheet(13/64 Pages) EMMICRO

13 / 64 page

EM6517

03/02 REV. C/448

 2002, EM Microelectronic-Marin SA

www.emmicroelectronic.com

Input and Output ports

The EM6517 has one input port and two bi-directional ports.

7.1 Ports overview

Table 7.1.1 Input and Output Ports Overview

Port

Mode

Mask(M:) or Register(R:)

Option

Function

Bit-wise Multifunction on Ports

[3:0]

Input

M: Pull-up

M: Pull-down (default)

R: Pull enabling

R: Debouncer or direct

input for IRQ requests

and Counter

R: + or - for IRQ-edge

and counter

R: Input reset

combination

-Input

-Bit-wise interrupt request

-Software test variable

conditional jump

-PA[3],PA[0] input for the

event counter

-Port A reset inputs

PA[3]

10 bit

event

counter

clock

PA[2]

PA[1]

TestVar2

PA[0]

10 bit

event

counter

clock

TestVar1

[3:0]

Individual

input or

output

R: CMOS or

Nch. open drain output

R: Pull-down on input

R: Pull-up on input

M: Pull-up

M: Pull-down

-Input or output

-PB[3] for the PWM

output

-PB[2:0] for the

Ck[11,16,12]

output

-Tristate output

PB[3]

PWM

output

PB[2]

Ck[11]

output

PB[1]

Ck[16]

output

PB[0]

Ck[12]

output

[3:0]

Port-wise

input /

output

R: CMOS or

Nch. open drain output

R: Pull-down on input

R: Pull-up on input

M: Pull-up

M: Pull-down

-Input or output

-Tristate output

PC[3]

only in

28 pin

package

PC[2]

only in

28 pin

package

PC[1]

PC[0]

Mask options ( M: )are valid for ROM version only

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