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TC826 Datasheet(PDF) 4 Page - Microchip Technology |
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TC826 Datasheet(HTML) 4 Page - Microchip Technology |
4 / 18 page TC826 DS21477B-page 4 © 2002 Microchip Technology Inc. 2.0 PIN DESCRIPTION Thedescriptionsof the pins arelistedinTable2-1. TABLE 2-1: PIN FUNCTION TABLE Pin Number (64-Pin PQFP) Symbol Description 1 NC Positive analog signal input. 2ANALOG COMMON Establishes the internal analog ground point. Analog common is set to 2.9V below the positive supply COMMON by an internal zener reference circuit. The voltage difference between VDD and analog common can be used to supply the TC826 voltage reference inputatREF IN (Pin 5). 3 +IN Positive analog signal input. 4 -IN Negative analog signal input. 5 REF IN Reference voltage positive input. Measured relative to analog common. REF IN ≈ Full Scale/2. 6CREF+ Reference capacitor connection. 7CREF- Reference capacitor connection. 8VDD Positive supply terminal. 9VBUF Buffer output. Integration resistor connection. 10 CAZ Negative comparator input. Auto-zero capacitor connection. 11 VINT Integrator output. Integration capacitor connection. 12 VSS Negative supply terminal. 13 OSC1 Oscillator resistor (ROSC) connection. 14 OSC2 Oscillator resistor (ROSC) connection. 15 BP LCD Backplane driver. 16 BAR 0 LCD Segment driver: Bar 0. 17 NC No connection. 18 BAR 1 LCD Segment driver: Bar 1. 19 BAR 2 LCD Segment driver: Bar 2. 20 BAR 3 LCD Segment driver: Bar 3. 21 BAR 4 LCD Segment driver: Bar 4. 22 BAR 5 LCD Segment driver: Bar 5. 23 BAR 6 LCD Segment driver: Bar 6. 24 BAR 7 LCD Segment driver: Bar 7. 25 BAR 8 LCD Segment driver: Bar 8. 26 BAR 9 LCD Segment driver: Bar 9. 27 BAR 10 LCD Segment driver: Bar 10. 28 BAR 11 LCD Segment driver: Bar 11. 29 BAR 12 LCD Segment driver: Bar 12. 30 BAR 13 LCD Segment driver: Bar 13. 31 BAR 14 LCD Segment driver: Bar 14. 32 BAR 15 LCD Segment driver: Bar 15. 33 BAR 16 LCD Segment driver: Bar 16. 34 BAR 17 LCD Segment driver: Bar 17. 35 BAR 18 LCD Segment driver: Bar 18. 36 BAR 19 LCD Segment driver: Bar 19. 37 BAR 20 LCD Segment driver: Bar 20. 38 BAR 21 LCD Segment driver: Bar 21. 39 BAR 22 LCD Segment driver: Bar 22. 40 BAR 23 LCD Segment driver: Bar 23. |
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