Z8F082ASH020SC datasheet(61/244 Pages) ZILOG

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PS024705-0405

P R E L I M I N A R Y

General-Purpose I/O

Z8 Encore! XP® F08xA Series

Product Specification

PAFS2[7:0]—Port Alternate Function Set 2

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

tion.

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

tion.

Port A–C Input Data Registers

Reading from the Port A–C Input Data registers (Table 26) returns the sampled values

from the corresponding port pins. The Port A–C Input Data registers are read-only. The

value returned for any unused ports is 0. Unused ports include those missing on the 8- and

28-pin packages, as well as those missing on the ADC-enabled 28-pin packages.

PIN[7:0]—Port Input Data

Sampled data from the corresponding port pin input.

0 = Input data is logical 0 (Low).

1 = Input data is logical 1 (High).

Port A–D Output Data Register

The Port A–D Output Data register (Table 27) controls the output data to the pins.

RESET

000

R/W

R/WR/W

ADDR

If 08H in Port A–D Address Register, accessible through the Port A–D Control Register

Table 26. Port A–C Input Data Registers (PxIN)

BITS

FIELD

PIN7

PIN6

PIN5

PIN4

PIN3

PIN2

PIN1

PIN0

RESET

XXX

R/W

RRR

ADDR

FD2H, FD6H, FDAH

Table 27. Port A–D Output Data Register (PxOUT)

BITS

FIELD

POUT7

POUT6

POUT5

POUT4

POUT3

POUT2

POUT1

POUT0

RESET

000

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

Z8F082ASH020SC Datasheet(PDF) 61 Page - Zilog, Inc.

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