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S6B0717 Datasheet(PDF) 11 Page - Samsung semiconductor |
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S6B0717 Datasheet(HTML) 11 Page - Samsung semiconductor |
11 / 65 page S6B0717 55 COM / 100 SEG DRIVER & CONTROLLER FOR STN LCD 7 PIN DESCRIPTION POWER SUPPLY Table 3. Power Supply Pins Description Name I/O Description VDD Supply Power supply VSS Supply Ground LCD driver supply voltages The voltage determined by LCD pixel is impedance-converted by an operational amplifier for application. Voltages should have the following relationship; V0 ≥ V1 ≥ V2 ≥ V3 ≥ V4 ≥ VSS When the internal power circuit is active, these voltages are generated as following table according to the state of LCD bias. LCD bias V1 V2 V3 V4 1/8 bias (7/8) x V0 (6/8) x V0 (2/8) x V0 (1/8) x V0 1/6 bias (5/6) x V0 (4/6) x V0 (2/6) x V0 (1/6) x V0 1/5 bias (4/5) x V0 (3/5) x V0 (2/5) x V0 (1/5) x V0 V0 V1 V2 V3 V4 I/O LCD DRIVER SUPPLY Table 4. LCD Driver Supply Pins Description Name I/O Description C1- O Capacitor 1 negative connection pin for voltage converter C1+ O Capacitor 1 positive connection pin for voltage converter C2- O Capacitor 2 negative connection pin for voltage converter C2+ O Capacitor 2 positive connection pin for voltage converter C3- O Capacitor 3 negative connection pin for voltage converter C3+ O Capacitor 3 positive connection pin for voltage converter VOUT I/O Voltage converter input / output pin DCDC5B I 5 times boosting circuit enable input pin. When this pin is low in 4 times boosting circuit, the 5 times boosting voltage appears at VOUT VR I V0 voltage adjustment pin It is valid only when on-chip resistors are not used (INTRS = “L”) VEXT I External VREF input pin for the LCD power supply voltage regulator REF I Selects the external VREF voltage via the VEXT pin − REF = "H": using the internal VREF − REF = "L": using the external VREF |
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