EM6620WS27 datasheet(13/56 Pages) EMMICRO

13 / 56 page

EM6620

www.emmicroelectronic.com

6. Input and Output ports

The EM6620 has:

- one 4-bit input port ( port A )

- one 4-bit input/output port. ( port B )

Pull-up and Pull-down resistors can be added to all this ports with metal and/or register options.

6.1 Ports overview

Table 6.1.1 Input and Output ports overview

Port

Mode

Mask(M:) or Register(R:)

option

Function

Bitwise Multi-Function on Ports

[3:0]

Input

M: Pull-up

M: Pull-down (default)

R: Pull(up/down) select

R: Debounced or direct

input for IRQ request

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

-PA[3] input for the

millisecond counter

-Port A reset inputs

PA[3]

10 bit

Event

Counter

clock

start /

stop of

MSC

PA[2]

PA[1]

PA[0]

10 bit

Event

Counter

clock

[3:0]

bit-wise

input or

output

R: CMOS or

Nch open drain output

R: Pull-down on input

R: Pull-up on input

-Input or Output

-PB[3] for the PWM output

-PB[2:0] for the ck[16,12,1]

output

-Tristate output

- PB[0] dynamic input

comparator

PB[3]

PWM

output

PB[2]

ck[1]

output

PB[1]

ck[12]

output

PB[0]

ck[16]

output

Comp.

input

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