DIO-24 CR: Card ISA 24 kênh vào/ra số DIO

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DIO-24 CR ISA Bus, 24-ch Digital I/O Board (RoHS)

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DIO-24 CR: Card ISA 24 kênh vào/ra số DIO

Features

  • 24 digital I/O lines 
  • Emulate 8255 mode 0 (Basic Input / Output mode) 
  • Buffer output for higher driving capability than 8255 
  • Register compatible to 724 series 
  • Programmable interrupt handling 
  • Output status readback

Introduction

The DIO-24 provides 24 TTL digital I/O lines. The DIO-24 emulates 8255 mode 0 and has an increased output current of 15 mA (source) and 64 mA (sink) , allowing it to control LED, relay, etc. The DIO-24 consists of three 8 bit bi-directional ports and 2 input lines for interrupt enable and interrupt. The 8 bit ports are named port A(PA),port B(PB) and port C(PC). The port C can be split into two four bit. All ports are configured as inputs upon power-up or reset. The DIO-24 uses 4 consecutive I/O locations in I/O addressing space. The base address is selectable from 200 to 3FF hex. The interrupt signal can be connected to any of the interrupt levels 2 through 7.

Specification

Hardware
Connector 20-pin box header x 2
50-pin box header x 1

 

Digital Input
Channels 24 (Bi-Direction)
Type 5 V/TTL
TTL Input, ON Voltage Level 2.0 V Min.
TTL Input, OFF Voltage Level 0.8 V Max.
Response Speed 1.0 MHz (Typical)
Trigger Mode Static Update

 

Digital Output
Channels 24 (Bi-Direction)
Type 5 V/TTL
Operation Mode Static Update
Voltage Logic 0: 0.4 V Max.
Logic 1: 2.4 V Min.
Max. Load Current Sink: 64 mA @ 0.8 V
Source: 32 mA @ 2.0 V
Response Speed 1.0 MHz (Typical)

 

PC Bus
Type ISA
Data Bus 8-bit

 

Power
Consumption 900 mA @ +5 V

 

Mechanical
Dimensions (mm) 110 x 182 x 22 (W x L x D)

 

Environmental
Operating Temperature 0 ~ +60°C
Storage Temperature -20 ~ +70°C
Humidity 5 ~ 85% RH, Non-condensing

Download

Data sheet

Documents

Odering information

DIO-24     CR  ISA Bus, 24-ch Digital I/O Board (RoHS)

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