WINSYSTEMS Industrial Partner

PCM-COM4A - Winsystems PCM-COM4A Four channel PC/104 module Simple Type: I/O Module

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Winsystems PCM-COM4A Four channel PC/104 module Simple Type: I/O Module

The PCM-COM4A is a 4 channel serial INS8250 compatible PC/104 module based on the 16C554. It is ideally suited for applications running DOS programs or languages that require exact register compatible hardware for program execution on software such as Greenleaf Comm Library, CROSSTALK, etc. Each channel supports RS-232 with optional RS-485 and RS-422 electrical levels to interface to a wide variety of serial communications devices such as modems, data collection equipment, and distributed I/O terminals. The PCM-COM4A will operate over the full industrial temperature range of -40 o to +85 o Centigrade

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  • +5 volt only operation
  • 16 byte receive FIFO with error flags
  • 16 byte transmit FIFO
  • Asynchronous data rates to 115,200 bps
  • Four independent 8250 compatible serial channels
  • Jumper selectable board I/O address
  • Modem control signals: CTS, RTS, DSR, DTR,
  • Operating temperature: -40 oC to +85 oC
  • Programmable serial interface characteristics for each channel, 5-, 6-, 7-, or 8-bit character lengths, Even, odd, or no parity generation and checking, 1, 1.5, or 2 stop bits, Local internal loopback
  • RI and DCD on each channel
  • Shared interrupt capability with status ID register RS-232 and optional RS-485 and RS-422 electrical interface levels on all channels
  • Small size: 3.6" x 3.8" (90mm x 96mm)
  • Software programmable baud rate generator


  • Dimensions: 3.6" x 3.8" (90mm x 96mm)
  • Non-condensing relative humidity: 5% to 95%
  • Operating Temperature: -40 o to +85 o Celsius
  • PC board: 4 layer FR4 epoxy glass with screened component legend
  • PC/104: 64-pin, 0.100" (32-pin double row), 40-pin, 0.100" (20-pin double row)
  • Serial: Two, 20-pin 0.100" grid



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