OVERVIEW
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°C to 85°C.