User`s guide

4
•
Introduction
High: Min. +2.0V
•
Input Load:
Low: +0.5V @ -0.2mA max.
High: +2.7V @+20uA max.
•
Output Voltage:
Low: Max. 0.5V
High: Min. +2.7V
•
Driving Capacity:
Low: Max. +0.5V at 8.0mA ( Sink)
High: Min. 2.7V at 0.4mA( Source)
•
Programmable Counter
•
Device:
8254
•
A/D pacer:
32-bit timer( two 16-bit counter cascaded together) with a
2MHz clock base
•
Counter:
One 16-bit counter with an internal 2MHz clock base or
external clock
•
Pacer Output:
0.00046 Hz ~ 100K Hz
♦
General Specifications
•
I/O Base Address
: 16 consecutive address location
•
Interrupt IRQ
: IRQ3, 5,6,7,9,10,11,12,15
•
DMA Channel
: CH1 or CH3
•
Connector
: 37-pin D-type connector
•
Operating Temperature
: 0
°
C ~ 55
°
C
•
Storage Temperature
: -20
°
C ~ 80
°
C
•
Humidity
: 5 ~ 95%, non-condensing
•
Power Consumption
:
+5 V @ 420 mA maximum
+12 V @ 240 mA maximum
•
Dimension
: 163 mm (L) X 123mm(W)