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Renesas India - Knowledgebase

(3823) What to know about MCU's current consumption using LCD drive circuit?

Latest Updated:08/05/2009


(LCD, Power Save)
I would like to know about the MCU's current consumption when using LCD drive control circuit. [2009/08/05]


  1. For the power supply current ICC of the MCU itself:
    The current consumption depends on the supply voltage, oscillation frequency, operating mode (clock frequency dividing ratio), frame frequency, and the number of SEG/COM.
    The higher frame frequency or the more SEG/COM there are, the higher current consumption becomes.
  2. For the current consumption of the LCD panel:
    It depends on the load of the LCD panel.
    There is current consumption from the external divider resistor connected to the LCD power input pins.


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