PMC424: Digital Input/Output Module, Differential, TTL, Counter/Timer

PMC424: Digital Input/Output Module, Differential, TTL, Counter/Timer Description

The PMC424 digital I/O module provides 24 differential input/outputs, 16 TTL input/output channels, and four 16-bit multi-function counter/timers.

The 16 TTL input/output channels can be programmed as an input or an output on a channel basis. The 24 differential input/output channels are programmed as inputs or outputs on an 4-channel port basis. All input channels can be enabled for change of state, low, or high level transition interrupts.

Four 16-bit multifunction counters/timers can be configured for pulse width modulated output, watchdog timer, event counter, frequency measurement, pulse width measurement, period measurement, or one shot pulse output. The four 16-bit counters can also be configured into two 32-bit counter/timers.

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PMC424: Digital Input/Output Module, Differential, TTL, Counter/Timer Benefits and Features

• 0 to 70°C (PMC424) or -40 to 85°C (PMC424E)

Digital I/O

• 40 digital input/output channels:
  • 24 differential input/outputs
  • 16 TTL input/output channels
• Programmable change of state/level interrupts
• Input signal filtering debounce logic

Counter/Timer

• Four 16-bit or two 32-bit counter/timer channels (control lines shared with 16 TTL I/O channels)
• Six operating modes:
  • Pulse width modulation
  • Watchdog timer
  • Event counter
  • Frequency measurement
  • Pulse width or period measurement
  • One-shot and repetitive one-shot
  • TTL-compatible thresholds
  • Power-up and system reset are failsafe

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Additional information