Z86C96 View Datasheet(PDF) - Zilog

Part Name

Description

Manufacturer

Z86C96

CMOS Z8®MICROCONTROLLER

Zilog 

Port 2 (P27-P20). Port 2 is an 8-bit, bit programmable,

bidirectional, CMOS compatible port. Each of these eight

I/O lines can be independently programmed as an input

or output or globally as an open-drain output. Port 2 is

always available for I/O operation. When used as an I/O

port, Port 2 may be placed under handshake control. In this

Z86C61/62/96

Z8® MICROCONTROLLER

configuration, Port 3 lines P31 and P36 are used as

the handshake control lines /DAV2 and RDY2. The hand-

shake signal assignment for Port 3 lines P31 and P36 is

dictated by the direction (input or output) assigned to P27

(Figure 12).

MCU

Open-Drain

OEN

Port 2 (I/O)

Handshake Controls

/DAV2 and RDY2

(P31 and P36)

PAD

Out

TTL Level Shifter

In

R ≈ 500 KΩ

Figure 12. Port 2 Configuration

Auto Latch

15

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