Z8F021ASH020SC datasheet(31/276 Pages) ZILOG

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PS022815-0206

Pin Description

Z8 Encore! XP® 4K Series

Product Specification

PB6 and PB7 are available only in those devices without ADC.

)

RESET/

PD0

I/O

(defaults to

RESET)

Low (in

Reset mode)

Yes (PD0

only)

programmable

for PD0;

always on for

RESET

Yes

programmable

for PD0; always

on for RESET

Yes,

unless

pullups

enabled

VDD

N/A

VSS

N/A

Table 5. Pin Characteristics (8-Pin Devices)

Symbol

Mnemonic Direction

Reset

Direction

Active Low

Active High

Tristate

Output

Internal Pull-

or Pull-down

Schmitt

Trigger

Input

Open Drain

Output

Tolerance

PA0/DBG

I/O

I (but can

change

during

reset if

key

sequence

detected)

N/A

Yes

Programmable

Pull-up

Yes

Yes,

Programmable

Yes,

unless

pull-ups

enabled

PA1

I/O

N/A

Yes

Programmable

Pull-up

Yes

Yes,

Programmable

Yes,

unless

pull-ups

enabled

RESET/

PA2

I/O

(defaults

RESET)

Low (in

Reset

mode)

Yes

Programmable

for PA2;

always on for

RESET

Yes

programmable

for PA2; always

on for RESET

Yes,

unless

pull-ups

enabled

PA[5:3]

I/O

N/A

Yes

Programmable

Pull-up

Yes

Yes,

Programmable

Yes,

unless

pull-ups

enabled

VDD

N/A

VSS

N/A

Table 4. Pin Characteristics (20- and 28-pin Devices)

Symbol

Mnemonic Direction

Reset

Direction

Active Low

Active High

Tristate

Output

Internal Pull-

or Pull-down

Schmitt

Trigger

Input

Open Drain

Output

Tolerance

Note:

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