DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| Clock Frequency vs
External Resistor of a µPD277 single-chip calculator circuit. DUT: µPD277C H54696 @ VDD = -6.0 V, VGG = -12.0 V, CEXT = 82 pF.  |
| Clock Frequency vs VDD Supply Voltage
of a µPD277 single-chip calculator circuit. DUT: µPD277C H54696 @ VGG = -12.0 V, REXT = 390k Ohm, CEXT = 82 pF.  |
| Clock Frequency vs VGG Supply Voltage
of a µPD277 single-chip calculator circuit. DUT: µPD277C H54696 @ VDD = -6.0 V, REXT = 390k Ohm, CEXT = 82 pF.  |
If you have additions to the above article please email: joerg@datamath.org.
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