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TC9328AF データシート(PDF) 11 Page - Toshiba Semiconductor |
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TC9328AF データシート(HTML) 11 Page - Toshiba Semiconductor |
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11 / 84 page  TC9328AF 2002-02-07 11 Pin No. Symbol Pin Name Function and Operation Remarks 74 VDB 75 C1 76 C2 77 VEE 78 C3 79 C4 80 VLCD Voltage doubler boosting output pins Voltage doubler boosting output pins. The VDB pin doubles the VDD pin voltage using the voltage doubler boosting capacitor between C1 and C2. The doubled voltage is used for the AD converter and constant voltage circuit (Vreg, VEE) power supply. The VEE pin supplies a constant voltage of 1.5 V from the VDB voltage. The voltage is doubled (to 3 V) using the voltage doubler boosting capacitor between C3 and C4. The doubled voltage is then supplied to the VLCD pin. The VEE potential and the VLCD potential are used to drive the LCD. Connect a stabilizing capacitor between the VDB pin and GND (0.1 µF, 10 µF typ.), and between the VLCD pin and GND (0.1 µF typ.). Connect a voltage doubler boosting capacitor (0.1 µF typ.) between C1 and C2, and between C3 and C4. (Note 1) Note 1: When the LCD pin is set as an output port, the “H” level output is the doubled voltage VLCD. Therefore, disconnect the voltage doubler boosting capacitor but connect the VLCD pin to the VDD pin. VLCD |
同様の部品番号 - TC9328AF |
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同様の説明 - TC9328AF |
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