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8 Port RS-232/422/485 Serial I/O Module

Products   >   I/O Expansion Modules   >   Communications Modules   >   Emerald-MM-8P-XT
      EMERALD-MM-8P-XT  PC/104 Octal Serial Port Module   PC104
Emerald-MM-8P-XT: I/O Expansion Modules, Rugged, wide-temperature PC/104, PC/104-<i>Plus</i>, PCIe/104 / OneBank, PCIe Minicard, and FeaturePak modules featuring standard and optoisolated RS-232/422/485 serial interfaces, Ethernet, CAN bus, and digital I/O functions., PC/104
OverviewSpecificationsOrdering
Information
Support

Emerald-MM-8P offers 8 multi-protocol serial ports on a single PC/104 module with complete software configurability via the operating system. Each port can be individually selected for RS-232, RS-422, or RS-485 under software control. Both local-echo and non-local-echo modes are supported for RS-485. I/O addresses and interrupt levels are also programmable, with interrupt sharing available for any number of ports. Each port may further be enabled or disabled in software. All configuration data is stored in an on-board EEPROM that is loaded automatically on power-up.

For applications where fixed addresses are desired, four groups of preset addresses are available with jumper settings that override the programmed settings. Line termination for RS-422/485 modes is also jumper-selectable.

Emerald-MM-8P offers 8 convenient digital I/O lines. The direction of each line is independently programmable. Diamond’s Universal Driver software provides software support for these digital I/O lines.

Two I/O headers are provided, with four serial ports and four digital I/O lines on each header. The board operates on +5V only, eliminating the need for a +12V supply that is often required for serial port operation.

Emerald-MM-8P is based on the industry-standard 16C654 quad serial port IC. Two ICs provide a total of 8 serial ports. Each port contains 64-byte transmit and receive FIFOs to support the high-speed 460.8kbps data rates. Drivers are available for a wide range of operating systems including Windows 10 and Linux.

Block Diagram

Emerald-MM-8P-XT: I/O Expansion Modules, Rugged, wide-temperature PC/104, PC/104-<i>Plus</i>, PCIe/104 / OneBank, PCIe Minicard, and FeaturePak modules featuring standard and optoisolated RS-232/422/485 serial interfaces, Ethernet, CAN bus, and digital I/O functions., PC/104

Serial Ports
Number of serial ports 8
Protocols RS-232, RS-422, RS-485 (local and no echo)
Configuration All features software configurable
Maximum baud rate 460.8kbps
Communications parameters 5, 6, 7, or 8 data bits; Even, odd, or no parity
Short circuit protection Continuous, all outputs
RS-232 mode
Input Impedance 3KΩ min
Input voltage swing ±30V maximum
Output voltage swing ±5V min, ±7V typical
RS-422/RS-485 modes:
Differential input threshold -0.2V min, +0.2V max
Input impedance 12KΩ minimum
Input current +1.0mA max (Vin = 12V)
-0.8mA max (Vin = -7V)
Differential output voltage 2.0V min (RL=50Ω)
High/low states differentia
output voltage symmetry
0.2V max
Digital I/O
Number of I/O lines 8 in, 8 out
Input voltage Low: -0.3V min, 0.8V max
Output voltage Low: 0.0V min, 0.4V max (IOL = 6mA max)
General
I/O header 2 40-position (2x10) .025" square pin header on .1" centers;
Headers mate with standard ribbon cable (IDC) connectors
Dimensions 3.55" x 3.775"
Power supply +5VDC ±10%
Current consumption 160mA typical, all outputs unloaded
Operating temperature -40°C to +85°C standard, all versions
MTBF EMM-8P-XT: 490,502 hours
RoHS Compliant

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Emerald-MM-8P-XT
available models:
EMM-8P-XT
8 RS-232/422/485 Serial Ports PC/104 Module
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Product Support for Emerald-MM-8P-XT

User Manual

EMM-8P-XT Manual(.pdf, 480.7 KB)
Utilities

Serial Port Configuration Utility(.zip, 681.4 KB)
Datasheet

Emerald-MM-8P datasheet(.pdf, 137.5 KB)
Technical Documents

Adding a serial port in Linux(.pdf, 578.3 KB)
Adding a serial port in Windows XP(.doc, 363.5 KB)
Emerald-MM-8P Temperature Test Report(.pdf, 336.5 KB)
ST16C654 Quad UART Datasheet(.pdf, 1.1 MB)
FEATURES
8 serial ports with up to 460.8kbps data rates
16C654 UARTS with 64-byte FIFOs
Software-configurable RS-232/RS-422/RS-485 protocols
Software selectable I/O addresses and interrupt levels
Supports interrupt sharing
EEPROM storage of configuration data for automatic power-on configuration
8 programmable digital I/O lines
Dual 40-pin I/O headers, 4 ports per header
+5V only operation
-40°C to +85°C operation
PC/104 form factor
ONLINE SUPPORT
See Emerald-MM-8P-XT Technical Resources
Request Product information
Request Technical Support
DOWNLOADS
EMM-8P-XT Manual
(.pdf, 480.7 kb)
Emerald-MM-8P datasheet
(.pdf, 137.5 kb)
ACCESSORIES
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