Digital I/O
The circuits use an 82C55A PPI with mode 0 supported. Ports A, B, C High, and C Low are buffered with 74ABT245 transceivers and pulled up to 5V.
COS Detection
Change of State Detection allows the card to generate an interrupt, port by port. Either direction will set the change of state interrupt. Your application can run much smoother by using this feature as processor overhead is greatly reduced, polling is not required.
Counter/Timers
The optional 82C54 has three-sixteen bit counters within one chip. These counters are useful for making frequency outputs, measuring frequency of square waves, pulse width outputs, pulse width measurements etc.
The 104-DIO-48S is supported in most operating systems and include a free DOS, Linux and Windows 95/98/Me/NT/2000/XP/2003 compatible software package. This includes sample programs and source code in "C" and Pascal for DOS, and Visual Basic, Delphi, C Builder, and Visual C for Windows. Also included is a graphical setup program in Windows.
Specifications
Digital I/O
- Programmable Peripheral Int.: 82C55A
- Channels: 24 or 48, pulled up to 5V via 10K
- Buffered Channels: 24 or 48 bits (ports A, B, C-High and C-Low)
- Sink & Source Current: 64mA & 32mA
- Modes supported: Mode 0
- Change of State Detection: 48 Inputs (both 8255 groups, all 8 ports)
- Throughput: Up to 1 MByte/sec
- Power Output: Resettable fused 5V @ 500mA per 50 pin connector
Counter/Timer
- Peripheral Interface Timer: Type 82C54
- Counters: 3 x 16-Bit down counters
- Clock Frequency: 1 MHz Time Base, available to the user
- Software Support: Event Counter, Frequency Output, Frequency and Pulse Measurement
- Max Input Frequency: 10MHz
- Signal Type: TTL
General
- Power Required: 5V @50mA Typical
- Operating temperature: 0°C to 70°C, optionally -40°C to 85°C available
- Storage temperature: -50° to 120°C
- Interrupt Requests: Eleven channels, IRQ 3-7, 9-12, 14, 15
- Interrupt Status Registers: Two; One 8bit for COS, One single bit for C/T
CE testing & approval must be done at the system level, in the designed enclosure, and is not done on individual boards.
