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TC7116 データシート(PDF) 6 Page - Microchip Technology |
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TC7116 データシート(HTML) 6 Page - Microchip Technology |
6 / 26 page TC7116/A/TC7117/A DS21457D-page 6 2002-2012 Microchip Technology Inc. 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Pin Number (40-Pin PDIP) (40-Pin CERDIP) Pin Number (44-Pin PQFP) Symbol Description 1 8 HLDR Hold pin, Logic 1 holds present display reading. 29 D1 Activates the D section of the units display. 310 C1 Activates the C section of the units display. 411 B1 Activates the B section of the units display. 512 A1 Activates the A section of the units display. 613 F1 Activates the F section of the units display. 714 G1 Activates the G section of the units display. 815 E1 Activates the E section of the units display. 916 D2 Activates the D section of the tens display. 10 17 C2 Activates the C section of the tens display. 11 18 B2 Activates the B section of the tens display. 12 19 A2 Activates the A section of the tens display. 13 20 F2 Activates the F section of the tens display. 14 21 E2 Activates the E section of the tens display. 15 22 D3 Activates the D section of the hundreds display. 16 23 B3 Activates the B section of the hundreds display. 17 24 F3 Activates the F section of the hundreds display. 18 25 E3 Activates the E section of the hundreds display. 19 26 AB4 Activates both halves of the 1 in the thousands display. 20 27 POL Activates the negative polarity display. 21 28 BP/ GND LCD backplane drive output (TC7116/TC7116A). Digital ground (TC7117/TC7117A). 22 29 G3 Activates the G section of the hundreds display. 23 30 A3 Activates the A section of the hundreds display. 24 31 C3 Activates the C section of the hundreds display. 25 32 G2 Activates the G section of the tens display. 26 34 V- Negative power supply voltage. 27 35 VINT Integrator output. Connection point for integration capacitor. See Section 4.3 “Integrating Capacitor”, Integrating Capacitor for more details. 28 36 VBUFF Integration resistor connection. Use a 47k resistor for a 200mV full scale range and a 470k resistor for 2V full scale range. 29 37 CAZ The size of the auto-zero capacitor influences system noise. Use a 0.47 F capacitor for 200mV full scale, and a 0.047 F capacitor for 2V full scale. See Section 4.1 “Auto-Zero Capacitor”, Auto-Zero Capacitor for more details. 30 38 VIN- The analog LOW input is connected to this pin. 31 39 VIN+ The analog HIGH input signal is connected to this pin. 32 40 COMMON This pin is primarily used to set the Analog Common mode voltage for battery operation, or in systems where the input signal is referenced to the power sup- ply. It also acts as a reference voltage source. See Section 3.1.6 “Analog Com- mon”, Analog Common for more details. 33 41 CREF- See Pin 34. |
同様の部品番号 - TC7116_13 |
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同様の説明 - TC7116_13 |
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