Product category:
PC-Compatible Boards and Assemblies
News Release from: Acal Microsystems | Subject: Acromag PMC modules
Edited by the Electronicstalk Editorial
Team on 13 June 2003
PMC modules deliver more value per slot
New I/O-rich PMC modules from Crellon Microsystems combine plentiful digital I/Os with flexible timer/counters on a single card to reduce hardware costs and save PMC slots.
New I/O-rich PMC modules from Crellon Microsystems combine plentiful digital I/Os with flexible timer/counters on a single card to reduce hardware costs and save PMC slots Extensive software support, including C libraries for popular RTOS offerings, as well as ActiveX controls and DLL drivers for integration with Microsoft Windows variants, further reduces development costs and also saves time to market
This article was originally published on Electronicstalk on 3 May 2001 at 8.00am (UK)
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The Acromag PMC464 provides 64 TTL-compatible I/Os.
16 of these are individually programmable as inputs or outputs and 48 are programmable on an 8bit port basis.
The second module in the series, the PMC424, provides 24 differential channels programmable as 4bit ports, alongside 16 individually programmable TTL-compatible I/Os.
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All inputs support change of state, low-level, or high-level transition interrupts.
Both modules also provide four 16bit counters compatible with TTL thresholds.
Six counting modes support pulsewidth modulation, watchdog timer, event counter, frequency measurement, pulse width or period measurement, and one-shot or repetitive one-shot functions.
For flexibility, two of these counters can also be combined to form a 32bit counter.
These extensive I/O channels and flexible timer functions allow several I/O functions to be performed on a single board, freeing PMC slots to host further system functions, and delivering savings in system BOM.
All power up and reset controls are failsafe, and each module provides input filtering debounce logic.
Extended temperature range variants of each module are also available, capable of operating between -40 to +85C.
C libraries for VxWorks, QNX, and other real time operating systems are available to facilitate integration with real time application programs.
The libraries provide generic routines (source code included) to handle reads, writes, interrupts, and other functions.
Demonstration programs enable the developer to quickly exercise the I/O modules before attaching the routines to the application program.
This diagnostic tool can significantly reduce the time required to troubleshoot and debug embedded designs.
Furthermore, an ActiveX (OLE) controls software package is available to enable easy integration of PMC modules with Microsoft Windows 95/98/Me and NT/2000 operating systems.
ActiveX controls are object-based software components that function as drivers to interface the PMC modules with compatible software development programs such as Microsoft Visual C++, and Visual Basic.
ActiveX controls can also link I/O data to HMI process control applications, Microsoft Office products such as Excel and Access, as well as many other desktop applications used to display and record data.
A Windows DLL driver software package is also available.
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