SUB-CUB 1/2 - COMPLETE 6-DIGIT COMPONENT COUNTERS
.080 (2.0)
.670
C. BD.)
.C. BD.)
APPLICATIONS INCLUDE:
VENDING MACHINES
VIDEO GAMES
COMPUTERS
UTILITY METERS
OFFICE COPIERS
P.C.’S
FLOW METERS
TEST EQUIPMENT
DISPENSING EQUIP.
MACHINE CONTROLS
MEDICAL EQUIPMENT
PORTABLE INSTRUMENTS
* ACCESSORY HARDWARE AVAILABLE FOR PANEL MOUNTING SUB-CUB 2
DESCRIPTION
As a completely self-contained counter/display module, SCUB1/SCUB2 (5 V)
and SCUB1LV (3.3 V) can be treated like an I.C. The module contains a custom
counter/driver chip that performs all the counting functions together with a
6-digit LCD readout. The latchable display with the separate reset function
permits the module to be used as frequency or rate meter, timer, phase-angle or
pulse width indicator and for other complex readout requirements in addition to
simple high speed counting.
The module is ideal for internal “on-board” applications where a readout of
count, frequency, time, etc. is needed within a circuit enclosure for
- LSI COUNTER CHIP WITH LCD DISPLAY
- SNAP MOUNTS DIRECTLY ON P.C. BOARD
SUB-CUB 1 - 0.2" (5 mm) HIGH DISPLAY
SUB-CUB 2 - 0.35" (8.9 mm) HIGH DISPLAY
SOLDERLESS, ELASTOMERIC INTERCONNECTS
ULTRA-LOW POWER
5 V: SUB-CUB 1 AND 2
3.3 V: SUB-CUB 1 ONLY
LATCHABLE DISPLAY WITH LEADING ZERO BLANKING
COUNT RATES TO 10 KHz
IDEAL IN APPLICATIONS FOR:
REGISTER, STATUS & USAGE COUNTING
FREQUENCY, EPUT, & RPM INDICATION
TIMER, PULSE-WIDTH & PERIOD READOUT
maintenance, diagnostic, tune-up, or other data readout requirements. The SUBCUB 2, with its larger display, can also be mounted with the convenient bezel
kit to provide a very flexible and econmical panel instrument.
SUB-CUBs snap-mount directly on any 1/16" P.C. board that has been etched
to provide a mating interconnect pad pattern with 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 corrosion-proof,
gas tight, interface contacts for high reliability.
MOUNTING & 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 variation
of ±0.005" (0.13 mm).
ELASTOMERIC
CONNECTOR
STRIP
.065
PC BOARD
LOCK-RAMP PINS
.062±.005
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 views are from SUB-CUB
mounting side of board.)
.080 (2.0)
.165 (4.2)
.095
(2.4)
.095
(2.4)
.165 (4.2)
Vss
.12
(3)
VDD
.427 (10.8)
.20 (5.1)
C
.854 (21.7)
.093 (2.5) DIAM.
POLARIZING HOLE
CENTER POINT
.225
(5.7)
.45 (11.4)
.120 (3) DIA. MOUNTING
HOLE, 2- PLCS.
OF MODULE
SCUB1/SCUB1LV
.0175
(.44)
N.C.
L
R
T
.080 (2.0)
.105 (2.7)
.0325 (.83)
.105 (2.7)
.0325 (.83)
.105 (2.7)
.0325 (.83)
.105 (2.7)
DIMENSIONS
In Inches (mm)
SUB-CUB1
P.C. BOARD
212674
(17)
1.045
(26.6)
Note: All hole size tolerances ±0.003" (0.08 mm)
All other tolerances ±0.005" (0.13 mm)
.080 (2.0)
.165 (4.2)
.095
(2.4)
.095
(2.4)
.165 (4.2)
VSS
.20 (5.1)
.12
C
(3)
VDD
.680 (17.3)
.120 (3) DIA. MOUNTING
HOLE, 2- PLCS.
1
.393 (10)*
(ABOVE P.
.093 (2.5) DIAM.
POLARIZING HOLE
.475
(12.5)
1.040
(26)
1.360 (34.5)
.950 (24.1)
SCUB2
P.C. BOARD
212674
1.880
(47.7)
* BASED ON P.C.
BOARD THICKNESS
OF .062 (1.6)
CENTER POINT
OF MODULE
SUB-CUB2
.0175
(.44)
.470 (11.9)*
(ABOVE P
.105 (2.7)
N.C.
.105 (2.7)
L
.105 (2.7)
T
.105 (2.7)
R
.0325 (.83)
.0325 (.83)
.0325 (.83)
DEVICE CONNECTIONS *
BLOCK DIAGRAM
COUNT (C) - CMOS, Schmidt Trigger; counter increments on negative going
transition.
RESET (R) - CMOS, Schmidt Trigger; counter is reset to zero when input is
low. Counter should always be reset to zero whenever power is first applied
to the unit.
LATCH (L) - CMOS, Schmidt Trigger; when pulled low, the latches are
transparent and display is updated as new counts are received. When latch
input is pulled high, the display registers count existing immediately prior to
activating the latch.
TEST (T) - CMOS, Schmidt Trigger; Input must be connected to VDD. This
input is used by manufacturer during factory testing.
VDD - +VDC Supply.
VSS - Common for D.C. Supply and Inputs.
* All unused inputs must be tied to either VDD or VSS, whichever is appropriate.
VDD
T
TEST
R
RESET
C
COUNT
L
LATCH
VSS
+V
LATCH &
MULTIPLEX
LOGIC
COUNT PULSES
LATCH
BACK
PLANE
DIG.6 DIG.5 DIG.4 DIG.3DIG.2 DIG.1
(MSD)
DISPLAY LATCHES & DRIVERS
COUNTER
MULTIPLEXER
BCD TO 7
SEGMENT
DECODER
MUX REASSEMBLER WITH
LEADING ZERO BLANKING,
6-DIGIT LCD DISPLAY
(LSD)
777777
CAUTION
This device contains CMOS circuitry which 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 units handled only on a conductive table
top by personnel wearing wrist-strap grounding equipment. These devices
have the same protection circuits as standard CMOS devices to prevent
MAXIMUM RATINGS (VOLTAGE REF. TO VSS)
RATING SYMBOL VALUE UNIT
DC Supply Voltage V
Input Voltage, All Inputs V
Operating Temperature T
Storage Temperature T
damage to inputs due to nominal over-voltage.
ELECTRICAL CHARACTERISTICS VDD TYP, 25 °C UNLESS OTHERWISE SPECIFIED
SYMBOL PARAMETER UNIT TEST CONDITION
V
I
I
DDQ
V
V
I
Supply Voltage VDC 3.5 5.0 5.25 2.7 3.3 3.6
DD
Supply Current µA 10 KHz Count Rate 55 30
DD
Quiescent Current µA 0 on display 45 20
Input High Voltage VDC 2.45 3.675 1.89 2.52
IH
Input Low Voltage VDC 1.575 2.3625 1.215 1.62
IL
IL
Input Leakage
Current
µA VDD ≥ VIN ≥ V
SS
Frequency Count Frequency KHz 10 10
T
T
LATCH
RST
Reset Pulse Width µsec 25 25
Latch Pulse Width µsec 25 25
SCUB1/SCUB2 SCUB1LV
MIN. TYP MAX MIN. TYP MAX
0.01 0.01
DD
I
A
STG
-0.5 to +5.25 VDC
-0.5 to (VDD +0.5) VDC
-35 to +85 °C
-35 to +85 °C
2
TYPICAL APPLICATIONS
OR PERIOD
COUNT & CONTROL FROM REMOTE INPUTS
Inputs to SUB-CUB are CMOS inputs and must be adequately buffered if
remote “off-board” signal sources are used. This illustration shows a SUBCUB being used in an elementary counting application to depict some of the
buffering methods that can be used.
The Count Input is buffered by the NPN Transistor input circuit. The base
resistance is split into two 10 K resistors, with a filter cap to eliminate spurious
counts due to electrical interference pickup. The filter network will allow count
rates to 10 KHz with Symetrical +5 V input count pulses. The 4.7 K across the
input would not be required if the circuit supplying the count pulses has a low
off-state output impedance.
The Remote Button-actuated Reset input is buffered by a simple RC circuit
consisting of two 47 K resistors and a 0.01 µf capacitor.
FREQUENCY, SPEED, FLOW, SPEED-RATIO,
PERIOD & CYCLE TIME INDICATIONS
This circuit uses a dual monostable I.C. to generate the proper latch and reset
coordination required for frequency or time-period readouts.
When frequency readout is desired, the pulse train whose frequency is to be
displayed, is applied to the CLK-A input, (the inverter, in the CLK-A input,
causes the SUB-CUB to increment on the positive going edge of CLK-A pulses
and can be onitted if negative edge incrementing is satisfactory). The CLK-B
input is supplied with standard time-base pulses whose period determines the
measuring time. For frequency measurement, this time is 1 second so CLK-B
input would be supplied with 1 pulse/sec. from a crystal clock or line-reference
divider. At the positive going edge of each CLK-B pulse, the first monostable
opens the SUB-CUB latch momentarily to update the display to the count
existing at that instant of time. Immediately after the latch closes, freezing the
updated count on the display, the internal counter in the SUB-CUB display is
reset to zero in preparation for a new counting cycle. Thus, at the end of each
measuring time interval the SUB-CUB display is updated to readout the number
of pulses received during the period, while it is accumulating new counts for the
next update.
Frequency ratio can be displayed by replacing the standard time-base (CLK-
B) input with a pulse train related to the second variable (or denominator) of
the ratio. Normally this pulse train is divided by 10, 100, or 1000 before being
applied to the CLK-B input to provide a higher resolution reading.
For period or cycle-time indication, CLK-A and B inputs are simply
interchanged. CLK-A input is now supplied with standard Clock Pulses, say 1
Hz to readout in seconds, while the pulse train whose period is being measured
is applied to the CLK-B input.
COUNT
INPUTS
4.7K
CLK-B
CLK-A
CLK-A
CLK-B
L-LATCH
R-RESET
+5VDC SUPPLY
10K
100K
14
12
11
10K
.005
+5V
1/2-4528
A
B
µf
COMMON
Q
815
VDD
2
4
5
1/2-4528
A
B
31613
Q
1
.01 µf
7
VDD
VSS
VSS
T
R
SUB-CUB
C
L
T
R
SUB-CUB
C
L
47K
100K
47K
REMOTE
RESET
100K
9
.001 µf.001 µf
PULSE WIDTH OR DWELL-TIME READOUT
This circuit also uses two monostables, however for pulse-width readout they
function at two different times.
A train of standard clock pulses, whose period determines the readout
increments, is applied to the CLK-A input. For example if readout in seconds is
desired, CLK-A would receive 1 pulse/second, or 1 Hz The pulse whose width
is to be measured is applied to CLK-B input. At the positive going edge of the
CLK-B pulse, the first monostable momentarily resets the SUB-CUB internal
counter to zero, and it then begins accumulating counts from the CLK-A time
reference pulses. At the conclusion of the CLK-B pulse, the negative going
edge momentarily opens the SUB-CUB display latch, and the number of timereference pulses that have been counted, since reset, is latched on the display to
provide a direct readout of CLK-B pulse-width.
31613
1/2-4528
A
B
1
TIME BASE
7
Q
VDD
VSS
UPDATE
DISPLAY
T
R
SUB-CUB
C
L
CLK-B
CLK-A
100K
14
12
11
+5V
1/2-4528
A
B
UPDATE
DISPLAY
100K
2
9
Q
815
4
5
.001 µf.001 µf
3
PANEL BEZEL KIT FOR THE SUB-CUB 2 (P/N HWK40000)
This kit provides a convenient way to adapt the SUB-CUB 2 to panel mounting. The kit includes
the black plastic bezel, the panel and internal window gaskets, P.C. Board, 12" ribbon cable and
mounting screws.
ASSEMBLY
BEZEL
PANEL
GASKET
INTERNAL
WINDOW
GASKET
SUB-CUB 2
CUSTOMER'S PANEL
.05"-.150" THICK
4-40 SCREWS
1/4" LONG FOR
.05"-.12" PANELS
PC BOARD
DIMENSIONS & PANEL CUT-OUT In inches (mm)
GRN
+V
DD
T
BLU
(TEST)
R (RESET)
VIO
GRY C (COUNT)
WHT
L (LATCH)
BLK
V (COMMON)
SS
.30
1.55
(39.37)
(7.62)
SUB
CUB
PANEL CUT-OUT FRONT VIEW
A
A
2.75 (69.85)
.38
(9.65)
.25
(6.35)
PC BOARD
(CUSTOMER
FURNISHED)
1.88 (47.75)
2.187 (55.55)
1.03
(26.16)
SECTION A-A
EVALUATION BOARD
The SUB-CUB evaluation board, DMOSCB02, can be used for bread board
evaluation of the SCUB1 or SCUB2. The SCUB will mount directly to the
evaluation board and all connections to the SCUB are made accessible via
header pins. Note that the DMOSCB02 evaluation board does not include the
SUB-CUB Display/Counter Module, which must be ordered separately.
SUB-CUB
MOUNTING BOARD
P/N DMOSCB02
CUSTOMER DESIGNED
BREAD BOARD
2X 1/8" DIA.
2X 1/4" DIA.
ORDERING INFORMATION
MODEL NO. DESCRIPTION PART NUMBER
SCUB1 SUB-CUB 1 Display/Counter Module SCUB1000
SCUB1LV SUB-CUB 1 Low Voltage Display/Counter Module SCUB1LV0
SCUB2 SUB-CUB 2 Display/Counter Module SCUB2000
HWK 4 *SUB-CUB 2 Panel Bezel Kit with P.C. Board & Cable HWK40000
HWK 3 *SUB-CUB 2 Panel Bezel Kit w/o P.C. Board & Cable HWK30000
SUB-CUB Mounting P.C. Board DMOSCB02
* SUB-CUB Evaluation Board Does Not Include SUB-CUB Dislay/Counter Module.
Order SUB-CUB Module Separately.
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