Z8F082ASH020SC datasheet(29/244 Pages) ZILOG

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PS024705-0405

P R E L I M I N A R Y

Pin Description

Z8 Encore! XP® F08xA Series

Product Specification

Pin Characteristics

Table 4 provides detailed information about the characteristics for each pin available on

the Z8 Encore! XP® F08xA Series 20- and 28-pin devices. Data in Table 4 is sorted alpha-

betically by the pin symbol mnemonic.

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

VSS

Digital Ground.

AVSS

Analog Ground.

Note: The AVDD and AVSS signals are available only in 28-pin packages with ADC. They are replaced by

PB6 and PB7 on 28-pin packages without ADC.

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

AVDD

N/A

AVSS

N/A

DBG

I/O

N/A

Yes

PA[7:0]

I/O

N/A

Yes

Programmable

Pull-up

Yes

Yes,

Programmable

PA[7:2]

only

PB[7:0]

I/O

N/A

Yes

Programmable

Pull-up

Yes

Yes,

Programmable

PB[7:6]

only

PC[7:0]

I/O

N/A

Yes

Programmable

Pull-up

Yes

Yes,

Programmable

PC[7:3]

only

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

VDD

N/A

VSS

N/A

Table 3. Signal Descriptions (Continued)

Signal Mnemonic

I/O

Description

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