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PC/104 4-port RS-232/422/485
EMM-4M module offers you 4 RS-232/422/485 serial ports operating at speeds up to 115kbps.
In RS-232 mode, the full complement of standard PC serial port signals (8 signals + ground) are provided for each port and are grouped onto two 20-pin headers (2 ports per header). In RS-422 mode, Signals RX+, RX-, TX+, and TX- are provided, along with ground. In RS-485 mode, signals TX+/RX+ and TX-/RX- are provided, along with ground.
A 16C554 quad serial port IC is used for the serial ports. This chip supports data transfer rates up to 115kbps and contains a 16-byte programmable FIFO buffer for each port to minimize processor overhead.
|Number of serial ports||4-ports|
|Protocol||RS-232, RS-422, RS-485 (jumper selected)|
|Control Signals||RS-232: DTR, DSR, RTS, CTS, RI, TxD, RxD, DCD
RS-422/485: TxD±. RxD±
|Maximum baud rate||Up to 115.2 Kbps|
|I/O Addresses||Jumper selectable I/O addresses|
|Interrupts||Jumper selectable IRQ|
|Dimensions||90 x 96 mm|
|Power supply||+5VDC ±5% @ 80mA max.|
|Operating Temperature||-40 to +85°C|
|EMM-4M-XT||PC/104 4-port RS-232/422/485|