Z8F082ASH020SC datasheet(60/244 Pages) ZILOG

60 / 244 page

PS024705-0405

P R E L I M I N A R Y

General-Purpose I/O

Z8 Encore! XP® F08xA Series

Product Specification

PPUE[7:0]—Port Pull-up Enabled

0 = The weak pull-up on the Port pin is disabled.

1 = The weak pull-up on the Port pin is enabled.

Port A–D Alternate Function Set 1 Sub-Registers

The Port A–D Alternate Function Set1 sub-register (Table 24) is accessed through the Port

A–D Control register by writing 07H to the Port A–D Address register. The Alternate

Function Set 1 sub-registers selects the alternate function available at a port pin. Alternate

Functions selected by setting or clearing bits of this register are defined in “GPIO Alternate

Functions” on page 32

Alternate function selection on port pins must also be enabled as decribed in “Port A–D

Alternate Function Sub-Registers” on page 39.

PAFS1[7:0]—Port Alternate Function Set 1

0 = Port Alternate Function selected as defined in Table 13 in the GPIO Alternate Functions

section.

1 = Port Alternate Function selected as defined in Table 13 in the GPIO Alternate Functions

section.

Port A–D Alternate Function Set 2 Sub-Registers

The Port A–D Alternate Function Set 2 sub-register (Table 25) is accessed through the

Port A–D Control register by writing 08H to the Port A–D Address register. The Alternate

Function Set 2 sub-registers selects the alternate function available at a port pin. Alternate

Functions selected by setting or clearing bits of this register is defined in Table 13 in the

section “GPIO Alternate Functions” on page 32.

Alternate function selection on port pins must also be enabled as decribed in “Port A–D

Alternate Function Sub-Registers” on page 39.

Table 24. Port A–D Alternate Function Set 1 Sub-Registers (PxAFS1)

BITS

FIELD

PAFS17

PAFS16

PAFS15

PAFS14

PAFS13

PAFS12

PAFS11

PAFS10

RESET

000

R/W

R/WR/W

ADDR

If 07H in Port A–D Address Register, accessible through the Port A–D Control Register

Table 25. Port A–D Alternate Function Set 2 Sub-Registers (PxAFS2)

BITS

FIELD

PAFS27

PAFS26

PAFS25

PAFS24

PAFS23

PAFS22

PAFS21

PAFS20

Note:

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