Google ATTRO website www
5.25" EBX CPU Card
3.5" Mini CPU Card
PC/104 CPU Module
PC/104 Module
ETX CPU Module
Mini-ITX Motherboard
Wide Temp Solution
COM Express Module
Qseven™ module
Base board

PC/104 4/8-Port RS-232 Module

Datasheet User's Manual
4/8 independent COM channels

4-port RS232 connection cable
Two 16C554-compatible quad UARTs
128-byte TX and RX receive FIFOs
Programmable serial interface characteristics for each channel
Shared interrupt capability with ID register
General Functions
PC/104 form factor
2 x RS-232 Controller (16C554)
Supports shared IRQ or independent IRQ mode (IRQ3, 4, 5, 7, 9, 10, 11, 12)
Interrupt vector addressing setting
Jumper selectable interrupt level
COM port base I/O addressing setting
MAX. baud rate: 921.6kb/s
Serial Controller-TL16C554:
The TL16C554 serves as the serial communication controller. It is an enhanced quadruple version of the TL16C550B asynchronous communications element (ACE). Each channel performs serial-to-parallel conversion on data characters received from peripheral devices or modems and parallel-to-serial conversion on data characters transmitted by the CPU. The complete status of each channel of the quadruple ACE can be read at any time during functional operation by the CPU. The information obtained includes the type and condition of the operation performed and any error conditions encountered.
Ordering Info
PM-1028-4 4-Port RS-232 PC/104 Module
Equipped with one 40-pin to 4 standard DB-9 connector
PM-1028-8 8-Port RS-232 PC/104 Module
Equipped with two 40-pin to 4 standard DB-9 connector

Copyright © 2016 ATTRO Technology Inc. All Rights Reserved.