The DIO-144 Provides 144 TTL digital I/O lines. The DIO-144 emulates 8255 mode 0 and has a increased output current of 15 mA (source) and 64 mA (sink), which allows it to control LEDs and relay. The DIO-144 consists of eighteen 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). Port C can be split into two four bit ports. All ports are configured as inputs upon power-up or reset. The DIO-144 uses 4 I/O addresses. 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 .
Double side SMT, short card , power saving
Connect directly to DB-24P, DB-24R, DB-24PR, DB-24SSR, DB-24POR
and other OPTO-22 compatible daughter board
144 I/O Lines
Emulate 6 Industrial standard 8255 mode 0
Programmable interrupt handling
Five 50-pin falt cable connector & one 37-pin D-sub connector
Output status readback
Interrupt handling capability
PC compatible PCI bus
One DB-37 connector and five 50-pin flat-cable connectors
Each port consists of three 8-bit port, PA, PB & PC in every connector
Each port can be programmed as D/I or D/O independently.
Each board = 6 connector = 6*3 port = 6*3*8 bit =144 bit