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<strong>ST7565</strong>Power Controller SetThis <strong>com</strong>mand sets the power supply circuit functions. See the function explanation in “The Power Supply Circuit,” for detailsE R/WA0 RD WR0 1 0D7 D6 D5 D4 D3 D2 D1 D00 0 1 0 1 010101Selected ModeBooster circuit: OFFBooster circuit: ONVoltage regulator circuit: OFFVoltage regulator circuit: ONVoltage follower circuit: OFFVoltage follower circuit: ONV5 Voltage Regulator Internal Resistor Ratio SetThis <strong>com</strong>mand sets the V5 voltage regulator internal resistor ratio. For details, see the function explanation is “The VoltageRegulator circuit " and table 11 .E R/WA0 RD WR0 1 0D7 D6 D5 D4 D3 D2 D1 D00 0 1 0 0 0 0 00 0 10 1 0↓1 1 11 1 1Rb/Ra RatioSmall↓LargeThe Electronic Volume (Double Byte Command)This <strong>com</strong>mand makes it possible to adjust the brightness of the liquid crystal display by controlling the LCD drive voltage V5through the output from the voltage regulator circuits of the internal liquid crystal power supply. This <strong>com</strong>mand is a two byte<strong>com</strong>mand used as a pair with the electronic volume mode set <strong>com</strong>mand and the electronic volume register set<strong>com</strong>mand, and both <strong>com</strong>mands must be issued one after the other.The Electronic Volume Mode SetWhen this <strong>com</strong>mand is input, the electronic volume register set <strong>com</strong>mand be<strong>com</strong>es enabled. Once the electronic volumemode has been set, no other <strong>com</strong>mand except for the electronic volume register <strong>com</strong>mand can be used. Once the electronicvolume register set <strong>com</strong>mand has been used to set data into the register, then the electronic volume mode is released.E R/WA0 RD WRD7 D6 D5 D4 D3 D2 D1 D00 1 0 1 0 0 0 0 0 0 1Ver 0.9 36/36 2001/01/11
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