Pin Functions
(Pin numbers in parentheses)
Vss (2)
Negative supply input, nominally 0V(GND).
Sound Output (3)
The hit (32ms pulse/976Hz tone), boundary reflection (32ms pulse/488Hz tone) and score (32ms pulse/1 .95KHz tone) sounds are output on this pin.
Vcc (4)
Positive supply input.
Ball Angles (5)
This input is left open circuit (Logic ‘1’) to select two rebound angles and connected to VSS (Logic ‘0’) to select four rebound angles. When two angles are selected they are ±20°, when four are selected they are ±20° and ±40°. See Fig. 9.
Ball Output (6)
The ball video signal is output on this pin.
Ball Speed (7)
When this input is left open-circuit, low speed is selected (1.3 seconds for ball to traverse the screen). When connected to VSS> (Logic ‘0’), the high speed option is selected (0.65 seconds for ball to traverse the screen).
Manual Serve (8)
This input is connected to VSS (Logic ‘0’) for automatic serving. When left open circuit (Logic ‘1’) the game stops after each score. The serve is indicated by momentarily connecting this input to VSS.
Right Player Output/Left Player Output (9,10)
The video signals for the right and left players are output on separate pins.
Right Bat Input/Left Bat Input (11,12)
An R–C network connected to each of these inputs controls the vertical position of the bats. Use a 10K resistor in series with each pot.
Bat Size (13)
This input is left open circuit (Logic ‘1’) to select large bats and connected to VSS (Logic ‘O’) to select small bats. For a 19" T. V. screen, large bats are 1.9" and small bats are 0.95" high.
Sync Output (16)
The T. V. vertical and horizontal sync signals are output on this pin. See Fig. 10.
Clock Input (17)
The 2 MHz master timing clock is input to this pin. The exact frequency is 2.012160 ±1%.
Rifle Game 1, Rifle Game 2, Tennis, Soccer, Squash, Practice (18 thru 23)
These inputs are normally left open circuit (Logic ‘1’) and are connected to VSS (Logic ‘0’) to select the desired game.
Score and Field Output (24)
The score and field video signal is output on this pin.
Reset (25)
This input is connected momentarily to VSS (Logic ‘0’) to reset the score counters and start a new game. Normally left open circuit.
Shot Input (26)
This input is driven by a positive pulse output of a monostable to indicate a “shot”.
Hit Input (27)
This input is driven by a positive pulse output of a monostable which is triggered by the shot input if the target is on the sights of the rifle.
NOTE: The “Shot” and “Hit” inputs have on-chip pull-down resistors to VSS. All other inputs (except the “Bat” inputs) have on-chip pull-up resistors to VCC.
Electrical Characteristics
Maximum Ratings[1]
| Voltage on any pin with respect to VSS pin | | -0.3 to +12 V |
| Storage Temperature Range | -20° C to +70° C | |
| Ambient Operating Temperature Range | 0° C to +40° C |
- ↑ Exceeding these rating could cause permanent damage. Functional operation of these devices at these conditions is not implied–operating ranges are specified below.
Standard Conditions (unless otherwise noted)
VCC = +6 to +7 V
VSS = 0 V
Operating Temperature (TA) = 0° C to +40° C
| Characteristics at 25° C and VCC = +6 Volts |
Min. | Typ. | Max. | Units | Conditions |
Clock Input
|
Maximum clock source impedance of 1K to VCC or VSS. | ||||
Frequency
|
1.99 | 2.01 | 2.03 | MHz | |
Logic ‘0’
|
0 | – | 0.5 | Volts | |
Logic ‘1’
|
VCC-2 | – | VCC | Volts | |
Pulse Width – Pos.
|
– | 200 | – | ns | |
Pulse Width – Neg.
|
– | 300 | – | ns | |
Capacitance
|
– | 10 | – | pF | VIN = 0V, F = 1 MHz |
Leakage
|
– | 100 | – | µA | |
Control Inputs
|
Max. contact resistance of 1 K to VSS | ||||
Logic ‘0’
|
0 | – | 0.5 | Volts | |
Logic ‘1’
|
VCC-2 | – | VCC | Volts | |
Input Impedance
|
– | 1.0 | – | M Ohms | Pull up to VCC |
Rifle Input
|
– | 1.0 | – | M Ohms | Pull down to VSS |
Outputs
| |||||
Logic ‘0’
|
– | – | 1.0 | Volt | I out = .05 mA |
Logic ‘1’
|
VCC-2 | – | – | Volts | I out = 0.1 mA |
Power Supply Current
|
– | 40 | 60 | mA | at VCC = +8.5 V |
Opening ceremonies at Gametronics included simulated electronic music.
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