BULLETIN NO. SCUB2/8A-C (1) DRAWING NO. LP0148 REVISED 3/97 RED LION CONTROLS INTERNATIONAL HEADQUARTERS RED LION CONTROLS (UK) 20 Willow Springs Circle, York, Pa. 17402, (717) 767-6511 Web site- http://www.redlion-controls.com Tapton Park, Chesterfield, Derbyshire S41 OTZ ENGLAND +44 1246 222122 FAX: +44 1246 221222 SUB-CUB2-8A - 8-DIGIT COMPONENT COUNTER l SUB-CUB2-8A - 8-DIGIT COMPONENT COUNTER l LSI COUNTER CHIP AND 0.30” (7.62 mm) HIGH LCD DISPLAY l SOLDERLESS, ELASTOMERIC INTERCONNECTS (Snap Mounts Directly Onto P.C. Board) l LATCHABLE DISPLAY WITH SELECTABLE LEADING ZERO BLANKING l COUNT RATES TO 750 KHz l LOW POWER, 40 µA AT 5 V (Typical) * ACCESSORY HARDWARE AVAILABLE FOR PANEL MOUNTING SUB-CUB2-8A DESCRIPTION The SUB-CUB2-8A is a completely self-contained 8-digit LCD counter/display module. The module can be treated as a component just like any other I.C. The SUB-CUB2-8A can be used in simple high speed counting applications as well as more complex applications such as frequency meters, pulse width meters, etc. Since it is a P.C. Board mounted component, the SUB-CUB2-8A is easily integrated into applications where a readout of count, frequency, or time is needed within a circuit enclosure. The SUB-CUB2-8A bezel and interface board can be used to provide a convenient and economical panel mounted display. The SUB-CUB2-8A snap-mounts directly onto any 1/16” P.C. Board that has been etched to provide a mating interconnect pad pattern and drilled for two mounting holes and a polarizing “key” hole. Interconnections to the P.C. Board as well as internal connections are made with elastomeric connectors that provide an easy, corrosion-proof, and gas-tight interface for high reliability. MOUNTING & DIMENSIONS DIMENSIONS Snap in mounting on the P.C. Board is facilitated by two, split, lock-ramp pins which engage mounting holes drilled in the P.C. Board. The silicone rubber elastomeric connectors compress to accommodate P.C. Board thickness variations of ±0.005” (0.13 mm). “In Inches (mm)” P.C. BOARD LAYOUT P.C. Board pads may be gold or tin-lead plated. Pad surface must be flat without excessive tin-lead build-up. (Layout view is from the SUB-CUB28A mounting side of the board.) Pad area must be clean and free of contaminants so that proper electrical contact can be made. Note: All hole size ±0.003” (0.08 mm) All other tolerances ±0.005” (0.13 mm) BLOCK DIAGRAM DEVICE CONNECTIONS * COUNT (C)- CMOS Schmidt Trigger input, counter increments on falling edge of count pulse. TEST (T) - CMOS level-sensitive. When the input is “HIGH”, the counter operates normally. When pulled “LOW”, the carry input to each decade is disconnected and tied to the count input so that all decades count in parallel to provide rapid testing. INHIBIT (I) - CMOS level-sensitive, a “LOW” level will prevent the counter from accepting pulses at the “COUNT” input. A “HIGH” level will enable the counter. RESET (R) - CMOS level-sensitive, a “LOW” level will reset the counter to 0 (or to 00000000 if LZB is disabled). A “HIGH” level will allow the counter to operate normally. LATCH (L) - CMOS level-sensitive, a “HIGH” level will latch the data in the display drivers while the counter registers can continue to update. A “LOW” level will allow the display driver to update with the counter registers. VSS - Common for D.C. Supply and Inputs. LEADING ZERO BLANKING (LZB) - CMOS level-sensitive, a “LOW” level will enable leading zero blanking. A “HIGH” level will display leading zeros. LZB can only be changed at power up. VDD - Positive side of D.C. Supply. * All unused inputs must be tied to either VDD or VSS, whichever is appropriate. CAUTION The SUB-CUB2-8A contains CMOS circuitry and has the same protection circuits as standard CMOS devices, to prevent damage to inputs due to nominal over-voltage. This device requires special anti-static handling to the same degree required by standard CMOS integrated circuits. Units should be stored in the conductive packaging used to ship the devices. Containers should be opened and the units handled only on a conductive table top by personnel wearing wrist strap grounding equipment. MAXIMUM RATINGS (VOLTAGE REF. TO VSS) RATING DC Supply Voltage Input Voltage, All Inputs Operating Temperature Storage Temperature SYMBOL VALUE UNIT VDD VI TA TSTG -0.5 to +6.5 -0.5 to (VDD +0.5) -20 to +85 -20 to +85 VDC VDC °C °C ELECTRICAL CHARACTERISTICS VDD = 5 V ±10% @ 25oC UNLESS OTHERWISE SPECIFIED SYMBOL VDD IDD IDDQ VIH VIL VIH VIL IIL FC TR TL PARAMETER MIN. TYP. MAX. UNIT TEST CONDITION 4.5 5V 50 40 2.9 1.3 1.9 1.9 0.1 5.5 100 100 VDC µA µA VDC VDC VDC VDC µA FC =10 KHz Not Counting Count, Reset & Latch Input Only Count, Reset & Latch Input Only Test, Inhibit, & LZB Input Only Test, Inhibit, & LZB Input Only 50% Duty Cycle Supply Voltage Supply Current Quiescent Current Input Voltage - High Input Voltage - Low Input Voltage - High Input Voltage - Low Input Leakage Current Count Frequency (50% Duty Cycle) Reset Pulse Width Latch Pulse Width 3.5 3.0 1.0 1.0 1.0 750 1000 KHz 10 10 0.5 0.5 µS µS ORDERING INFORMATION MODEL NO. DESCRIPTION PART NUMBER SCUB28A SUB-CUB2-8A Display/Counter Module SCUB28A0 HWK 28 *Panel Bezel Kit with P.C. Board & Cable HWK28000 HWK 3 *Panel Bezel Kit w/o P.C. Board & Cable HWK30000 * - Does not include SUB-CUB2-8A Display/Counter Module (Order SUB-CUB2-8A Separately). PANEL BEZEL KIT FOR THE SUB-CUB2-8A (P/N HWK28000) This kit provides a convenient way to adapt the SUB-CUB2-8A for panel mounting. The kit includes the black bezel, the panel and internal window gaskets, P.C. Board, 12” ribbon cable and mounting screws. ASSEMBLY DIMENSIONS & PANEL CUT-OUT “In inches (mm) PANEL CUT-OUT FRONT VIEW EIGHT-DIGIT TOTALIZER This circuit is used to totalize the number of relay contact closures for the purpose of determining the operating life of a relay. The relay is energized by a pulsed external voltage. The normally open contact of the relay is connected to the signal input of the circuit. The resistors R1 and R2, along with C1, provide filtering to prevent contact bounce from registering false counts. The SUBCUB2-8A can be cleared by pressing the “RESET” button. Note that all unused inputs are tied to either “VSS” or “VDD”, whichever is appropriate.
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