40 bidirectional digital I/O channels in VITA 93 format
Within the Acromag embedded processor, FPGA and I/O portfolio, the QMC470 provides 40 general-purpose bidirectional digital I/O points in a compact 26 × 78.25 mm VITA 93 mezzanine.
Inputs are TTL compatible, while outputs use a CMOS open-drain configuration.
With up to 15 mA sink capability, the outputs can interface directly with compatible digital devices and standard relay racks.
Programmable interrupts, debounce and output readback
Every channel supports programmable event detection for:
- change of state;
- low-to-high transitions;
- high-to-low transitions.
Programmable debounce helps reject false events caused by noise or switching transients.
Output readback registers allow the host to verify output state without allocating additional input channels.
At power-up or system reset, outputs enter a failsafe state to prevent unintended momentary switching.
TTL inputs and CMOS open-drain outputs
Input signals cover -0.25 V to +5.25 V DC, with a typical threshold of 1.5 V.
The open-drain outputs provide up to 15 mA DC sink current and include onboard 4.7 kΩ pull-up resistors.
Each channel also incorporates electronic overvoltage protection.
The QMC470 therefore combines digital monitoring and control in a single compact module for industrial applications, test systems and embedded computers requiring high I/O density.
PCIe with air- and conduction-cooled versions
The carrier interface is PCI Express 2.1 Gen1 x1 at 2.5 Gbps.
Two versions are available:
- QMC471-1111 - air cooled, 0 to +70°C at 200 LFM.
- QMC472-1111 - conduction cooled, -40 to +85°C.
The USW-API software environment supports Windows, Linux and VxWorks.
The VITA 93 format allows the module to be integrated through suitable carriers into PCIe, VPX, CompactPCI, VNX+ and other embedded platforms.
Versions
| Part number |
Configuration |
Cooling |
| QMC471-1111 |
40 TTL/CMOS digital I/O channels |
Air |
| QMC472-1111 |
40 TTL/CMOS digital I/O channels |
Conduction |
