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Figure 39, Cpu user manual – Zilog Z86193 User Manual

Page 60

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Z8

®

CPU

User Manual

UM001604-0108

Input/Output Ports

53

Figure 39. Port 2 Configuration with Open-Drain Capability, Autolatch, and

Schmitt-Trigger

Figure 40. Port 2 Configuration with TTL Level Shifter

P21–P26 OE

PIN

P21–P26 OUT

P21–P26 IN

2.3 V Hysteresis @ V

CC

= 5.0 V

OPEN-DRAIN

1.5

R

≈ 500 KΩ

Autolatch

P21–P26

OEN

PIN

OUT

IN

TTL Level Shifter

Open-Drain