Z86C96 View Datasheet(PDF) - Zilog

Part Name

Description

Manufacturer

Z86C96

CMOS Z8®MICROCONTROLLER

Zilog 

PIN FUNCTIONS (Continued)

Z86C61/62/96

Z8® MICROCONTROLLER

Port 4 (P47-P40). Port 4 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 4 is always

available for I/O operation (Figure 15). Port address (F)02.

Port 5 (P57-P50). Same as Port 4. Port address (F)04.

Port 6 (P63-P60). Same as Port 4. (Note: this is a 4-bit port,

bits D3-D0.) Port address (F)07.

Auto Latch. The Auto Latch puts valid CMOS levels on all

CMOS inputs that are not externally driven. This reduces

excessive supply current flow in the input buffer when it is

not being driven by any source.

MCU

Port 4 (I/O)

Open-Drain

OEN

PAD

Out

TTL Level Shifter

In

R ≈ 500 KΩ

Figure 15. Port 4 Configuration

Auto Latch

18

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