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HD66760 Datasheet(PDF) 10 Page - Hitachi Semiconductor |
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HD66760 Datasheet(HTML) 10 Page - Hitachi Semiconductor |
10 / 105 page HD66760 10 Table 1 Pin Functional Description (cont) Signals Number of Pins I/O Connected to Functions C3+, C3– 2 — Step-up capacitance External capacitance should be connected here for step-up. C4+, C4– 2 — Step-up capacitance External capacitance should be connected here for step-up. C5+, C5– 2 — Step-up capacitance External capacitance should be connected here for step-up. C6+, C6– 2 — Step-up capacitance External capacitance should be connected here for step-up. RESET* 1 I MPU or external R-C circuit Reset pin. Initializes the LSI when low. Must be reset after power-on. OPOFF 1 I V CC or GND Turns the internal operational amplifier off when OPOFF = V CC, and turns it on when OPOFF = GND. When internal amplifier is not used, supply V1 to V5 voltage level to the V1OUT to V5OUT pins. VSW1, VSW2 2 I GND Test pins. Must be VSW1, VSW2 = GND. VREG 1 I Input pin This pin is used when the reference voltage of the internal power-supply regulator is externally supplied. When the internal reference voltage (1/2 Vci) is used, VREG must be opened since the 1/2-Vci level is output. VLREF 1 I Input pin Use this pin when the LCD drive voltage is externally supplied. When the internal power-supply regulator is used, short VLREF with the V1REF pin. V1REF 1 O Output pin Outputs the LCD drive voltage generated in the internal power-supply regulator. Insert this pin when the external temperature-compensation circuit is used between V1REF and VLREF. If the circuit is not used, short V1REF and VLREF. V CCDUM 2 O Input pins Outputs the internal V CC level; shorting this pin sets the adjacent input pin to the V CC level. GNDDUM 4 O Input pins Outputs the internal GND level; shorting this pin sets the adjacent input pin to the GND level. Dummy 4 — — Dummy pad. Must be left disconnected. TEST 1 I GND Test pin. Must be fixed at GND level. VTEST 1 — — Test pin. Must be left disconnected. VL1REF 1 O — Test pin. Must be left disconnected. |
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