PMC Modules PMC Modules NEW! PMC424 Digital I/O (Differential & TTL) and Counter/Timers The PMC424 digital I/O module provides 24 differential input/outputs, 16 TTL input/output channels, and four 16-bit multi-function counter/timers. This module saves money and PMC 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 output: Each counter has one output signal. The as an input or an output on a channel basis. The 24 Specifications TTL output is used for waveform output, watchdog active differential input/output channels are programmed as Differential Digital I/O indicator, or 1.6µS pulse upon counter function completion. inputs or outputs on an 4-channel port basis. All input I/O channel configuration: 24 bidirectional differential Programmable as active high or low. channels can be enabled for change of state, low, or signals. Direction is controlled as a 4-channel group. Clock frequencies: Selectable for 20MHz, 10MHz, 5MHz, high level transition interrupts. Differential driver output voltage with 50 ohm load: 2.5MHz, 1.25MHz or external up to 8MHz. 2V minimum, 5V maximum. Minimum I/P event: 100nS (debounce disabled). Four 16-bit multifunction counters/timers can be Common mode output voltage: 3V maximum: Minimum pulse measurement: 100nS (debounce disabled). configured for pulse width modulated output, watchdog Minimum period measurement: 200nS (debounce disabled). Minimum input resistance: 12K ohms. timer, event counter, frequency measurement, pulse Minimum gate/trigger pulse: 100nS (debounce disabled). Termination resistors: 120 ohm termination resistor width measurement, period measurement, or one shot Board crystal oscillator: 20MHz. networks are installed in sockets. pulse output. The four 16-bit counters can also be PMC Compliance configured into two 32-bit counter/timers. TTL Digital I/O Conforms to PCI Local Bus Specification, Revision 2.2 and I/O channel configuration: 16 bidirectional TTL (15 for 424R) CMC/PMC Specification, P1386.1. transceivers with direction controlled independently Features (shared as counter/timer control signals). 4K Memory Space Required: One Base Address Register. Digital I/O Reset/power-up condition: All channels default to input. Signaling: 5V Compliant, 3.3V Tolerant. ■40 digital input/output channels: Digital Input Environmental - 24 differential input/outputs Input voltage range: 0 to 5V DC. Operating temperature: 0 to 70°C (PMC424) or - 16 TTL input/output channels (15 ch.for 434R) Input signal threshold, low to high: 3.5V typical. -40 to 85°C (PMC424E) ■Programmable change of state/level interrupts Input signal threshold, high to low: 1.5V typical. Storage temperature: -55 to 105°C. Input response time: 10 nanoseconds, typical. Relative humidity: 5 to 95% non-condensing. ■Input signal filtering debounce logic Digital Output MTBF: 1,596,123 hrs. at 25°C, MIL-HDBK-217F, notice 2. Output voltage range: 0 to 5V DC. Counter/Timer Power: 216mA at +5V, typical. ■Four 16-bit or two 32-bit counter/timer channels Output ON current range: -32 to 32mA. Ordering Information (control lines shared with 16 TTL I/O channels) Output pullups: 4.7K ohm socketed resistors. PMC424: Digital I/O and counter/timer module Turn on time: 10nS. ■Six operating modes: PMC424E: Same as PMC424 plus extended temp.range Turn off time: 10nS. - Pulse width modulation PMC424R: Digital I/O and counter/timer module with - Watchdog timer Input Interrupts rear I/O connector. - Event counter 40 channels of interrupts are available for high-to-low, PMC424RE: Same as PMC424R plus extended temp.range - Frequency measurement low-to-high, or any change-of-state event type. - Pulse width or period measurement Debounce: Selectable for each channel. User-selectable Software (see Page 81) ® - One-shot and repetitive one-shot (5.6µS, 50.4µS, 408.8µS, or 3.276mS). PMCSW-API-VXW: VxWorks software support package ® PCISW-API-QNX: QNX software support package ®■TTL-compatible thresholds Counter/Timers PCISW-API-WIN: Windows DLL software support Counter/timer configuration: Four 16-bit counters can be ■Power-up and system reset are failsafe configured into two 32-bit counters. Accessories (see Page 87) 5025-288: Termination panel, SCSI-3 connector, Counter input: Each counter has an IN ,IN , and IN port. A B C 68 screw terminals These TTL input signals control start/stop, reload, event input, external clock, trigger, and up/down operations. 5028-432: Cable, shielded, SCSI-3 connector both ends Acromag, Inc.  PO Box 437, Wixom, MI 48393  Phone: 248-624-1541  Fax: 248-624-9234  solutions@acromag.com  www.acromag.com 47