The DIO-48 provides 48 TTL digital I/O lines, and one 16- bit counter . The DIO-48 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-48 consists of six 8-bit bi-directional ports and 3 input lines for interrupt enable and counter. 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 as inputs upon power-up or reset. 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.
- Connects directly to DB-24P,DB-24R,DB-24PR,DB-885B ,or any OPTO-22 compatible daughter board
- 48 digital I/O lines
- One 16-bit counter
- IRQ Level : IRQ3 ~ IRQ15
- Interrupt Trigger by Event / Timer / Port C3 , C7
- Clock Source can be setting : RTC (32.768 k)/1 M/2 M/4 MHz
- Emulate two industrial-standard 8255 mode 0
- Two 50-pin flat cable connector
- Output status read back
| Digital Input |
| Channels |
48 (OPTO-22 compatible) |
| Compatibility |
5 V/TTL |
| Input Voltage |
Logic 0: 0.8 V max.
Logic 1: 2.0 V min. |
| Response Speed |
1.0 MHz (Typical) |
| Digital Output |
| Channels |
48 (OPTO-22 compatible) |
| Compatibility |
5 V/TTL |
| Output Voltage |
Logic 0: 0.4 V max.
Logic 1: 2.4 V min. |
| Output Capability |
Sink: 0.8 mA @ 0.8 V
Source: -2.4 mA @ 2.0 V |
| Response Speed |
1.0 MHz (Typical) |
| Timer/Counter |
| Channels |
3 independent |
| Resolution |
16-bit |
| Input Frequency |
10 MHz max. |
| Clock Source |
32.768 kHz/2 MHz/4 MHz |
| General |
| Bus Type |
ISA |
| I/O Connector |
50-pin box header x 2 |
| Dimensions (L x W x D) |
159 mm x 120 mm x 22 mm |
| Power Consumption |
900 mA @ +5 V |
| Operating Temperature |
0 ~ 60 °C |
| Storage Temperature |
-20 ~ 70 °C |
| Humidity |
5 ~ 85% RH, non-condensing |
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