Acromag, Inc. Digital I/O and Counter/Timer, APC400 Series APC464

64 TTL digital input/output channels Four 16-bit or two 32-bit counter/timer channels Six operating modes TTL-compatible thresholds The APC464 provides 64 TTL digital input/output channels and four 16-bit multi-function counter/timers. All 64 I/O channels, when set as inputs, support configuration for interrupts on either a change-of-state or on a high-to-low or low-to-high transition. A debounce timer is selectable to help filter out false transitions. Four 16-bit multifunction counters/timers are configurable 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. Features Digital I/O 64 TTL digital input/output channels: 16 individually programmable channels 48 channels configured on an 8-bit port basis Programmable change of state/level interrupts Input signal filtering debounce logic Counter/Timers 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 is failsafe Approvals CE marked, FCC Part 15, Class B