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TC7107 Arkusz danych(PDF) 7 Page - Microchip Technology |
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TC7107 Arkusz danych(HTML) 7 Page - Microchip Technology |
7 / 26 page © 2002 Microchip Technology Inc. DS21455B-page 7 TC7106/A/TC7107/A 36 (5) VREF+ The analog input required to generate a full scale output (1999 counts). Place 100mV between Pins 35 and 36 for 199.9mV full scale. Place 1V between Pins 35 and 36 for 2V full scale. See paragraph on Reference Voltage. 37 (4) TEST Lamp test. When pulled HIGH (to V+) all segments will be turned on and the display should read -1888. It may also be used as a negative supply for externally generated decimal points. See paragraph under TEST for additional information. 38 (3) OSC3 See Pin 40. 39 (2) OSC2 See Pin 40. 40 (1) OSC1 Pins 40, 39, 38 make up the oscillator section. For a 48kHz clock (3 readings per section), connect Pin 40 to the junction of a 100k Ω resistor and a 100pF capacitor. The 100k Ω resistor is tied to Pin 39 and the 100pF capacitor is tied to Pin 38. TABLE 2-1: PIN FUNCTION TABLE (CONTINUED) Pin Number (40-Pin PDIP) Normal Pin No. (40-Pin PDIP) (Reversed Symbol Description |
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