CompactPCI Boards NEW! AcPC424 Digital I/O (Differential & TTL) and Counter/Timers The AcPC424 provides 24 differential input/outputs, 16 TTL input/output channels, and four 16-bit multi- function counter/timers. This module saves money and CompactPCI slots by combining differential I/O, TTL I/O, and counter/timer functions on one card. The 16 TTL input/output channels can be programmed Counter clock frequencies: Selectable for 20MHz, as inputs or as outputs on an individual channel basis. Specifications 10MHz, 5MHz, 2.5MHz, 1.25MHz or external up to The 24 differential input/output channels are pro- Differential Digital I/O 8MHz. grammed as inputs or outputs on an 4-channel port I/O channel configuration: 24 bidirectional differential Minimum I/P event: 100nS (debounce disabled). basis. All input channels can be enabled for change of signals. Direction is controlled as a 4-channel group. Minimum pulse measurement: 100nS (debounce disabled). state, low, or high level transition interrupts. Differential driver output voltage with 50 ohm load: Minimum period measurement: 200nS (debounce disabled). 2V minimum, 5V maximum. Four 16-bit multifunction counters/timers can be Minimum gate/trigger pulse: 100nS (debounce disabled). Common mode output voltage: 3V maximum: configured for pulse width modulated output, watchdog Minimum input resistance: 12K ohms. CompactPCI bus Compliance timer, event counter, frequency measurement, pulse Termination resistors: 120 ohm termination resistor networks Meets PCI spec. V2.2 and PICMG 2.0, R3.0. width measurement, period measurement, or one shot are installed in sockets. Data transfer bus: Slave with 32-bit, 16-bit, and 8-bit data pulse output. The four 16-bit counters can also be transfer operation. configured into two 32-bit counter/timers. TTL Digital I/O Interrupts (INTA#): Interrupts requested on Interrupt A. I/O channel configuration: 16 bidirectional TTL transceivers with direction controlled independently (shared as Plug-and-Play: The system maps the base address into the Features counter/timer control signals). PCI bus 32-bit memory space. Digital I/O Reset/power-up condition: All channels default to input. Environmental ■ 40 digital input/output channels: Digital Input Operating temperature: 0 to 70°C (AcPC424) or - 24 differential input/outputs Input voltage range: 0 to 5V DC. -40 to 85°C (AcPC424E) - 16 TTL input/output channels Input signal threshold, low to high: 3.5V typical. Storage temperature: -55 to 125°C. ■ Programmable change of state/level interrupts Input signal threshold, high to low: 1.5V typical. Relative humidity: 5 to 95% non-condensing. Digital Output MTBF: Consult factory. ■ Input signal filtering debounce logic Output voltage range: 0 to 5V DC. Power: 216mA at +5V, typical. Output ON current range: -32 to 32mA. Counter/Timer Ordering Information ■ Four 16-bit or two 32-bit counter/timer channels Output pullups: 4.7K ohm socketed resistors. (control lines shared with 16 TTL I/O channels) CompactPCI Boards Input Interrupts AcPC424: Digital I/O and counter/timer module ■ Six operating modes: 40 channels of interrupts are available for high-to-low, AcPC424E: Same as AcPC424 plus extended temp.range low-to-high, or any change-of-state event type. - Pulse width modulation Debounce: Selectable for each channel. User-selectable - Watchdog timer Software (see Page 81) (5.6µS, 50.4µS, 408.8µS, or 3.276mS). ® - Event counter PMCSW-API-VXW: VxWorks software support package - Frequency measurement ® PCISW-API-QNX: QNX software support package Counter/Timers - Pulse width or period measurement ® Counter/timer configuration: Four 16-bit counters can be PCISW-API-WIN: Windows DLL software support - One-shot and repetitive one-shot configured into two 32-bit counters. Accessories (see Page 87) Counter input: Each counter has an IN ,IN , and IN port. A B C ■ TTL-compatible thresholds 5025-288: Termination panel, SCSI-3 connector, These TTL input signals control start/stop, reload, event 68 screw terminals input, external clock, trigger, and up/down operations. ■ Power-up and system reset are failsafe 5028-432: Cable, shielded, SCSI-3 connector both ends Counter output: Each counter has one output signal. The TTL output is used for waveform output, watchdog active indi- cator, or 1.6µS pulse upon counter function completion. Programmable as active high or low. Acromag, Inc. • PO Box 437, Wixom, MI 48393  Phone: 248-624-1541  Fax: 248-624-9234  solutions@acromag.com  www.acromag.com 74 CompactPCI Boards