Z8018233FSC datasheet(98/109 Pages) ZILOG

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3-98

Z80182/Z8L182

ZILOG INTELLIGENT PERIPHERAL

PRELIMINARY

Zilog

DS971820600

General-Purpose I/O Port Timing

This figure shows the timing for the Ports A, B and C.

Parameters referred to in this figure appear in Tables D

and E.

A0-A7

/IORQ

D0-D7

/WR

/RD

Port

Previous Output

Port Input Data 1 (In)

Port Input Data 2 (In)

Port Data 2 Out

Port Data 1 (Out)

(In) 'FF'H (Change Port To Input)

Port Data Dir. Reg. Addr. (Input)

Port Data Reg. Addr. (Input)

Port Data Reg.

I/O Port Timing (Input)

A0-A7

/IORQ

D0-D7

/WR

Port

I/O Port Timing (Output)

Port (Output)

Port Output Data 1 (Out)

Port Output Data 2 (Out)

Port Output Data 2 (In)

Port Output Data 1 (In)

(In) 'OO'H (Change Port To Output)

Port Data Dir. Reg. Addr. (Input)

Port Data Reg. Addr. (Input)

Figure 107. PORT Timing

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