Acromag, Inc. Digital I/O and Counter/Timer, APC400 Series APC424

40 I/O channels: 24 differential and 16 TTL Four 16-bit or two 32-bit counter/timers The APC424 provides 24 differential input/outputs, 16 TTL input/output channels, and four 16-bit multifunction counter/timers. The 16 TTL input/output channels can be programmed as inputs or as outputs on an individual 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. The APC424 module saves money and PCI slots by combining differential I/O, TTL I/O, and counter/timer functions on one card. Features 0 to 70°C (-40 to 85°C E version) Power-up and system reset are failsafe CE marked, FCC Part 15, Class B 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