ML9051G Datasheet, PDF(52/74 Page) OKI electronic componets – 132-Channel LCD Driver with Built-in RAM for LCD Dot Matrix Displays

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ML9051G Datasheet, PDF (52/74 Pages) OKI electronic componets – 132-Channel LCD Driver with Built-in RAM for LCD Dot Matrix Displays

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OKI Semiconductor

PEDL9051G-01

ML9051G

â¢ Sleep state

In this state, all the operations of the LCD display system are stopped and it is possible to reduce the current

consumption to a level near the idle state current consumption unless there are accesses from the MPU. The

internal conditions in the sleep state are as follows:

(1) The oscillator circuit and the LCD power supply are stopped.

(2) All the LCD drive circuits are stopped and the segment and common driver outputs will be at the VSS level.

â¢ Standby state

All operations of the dynamic LCD display section are stopped, only the static display circuits for the indicators

operate and hence the current consumption will be the minimum necessary for static drive. The internal conditions

in the standby state are as follows:

(1) The power supply circuit for LCD drive is stopped. The oscillator circuit will be operating.

(2) The LCD drive circuits for dynamic display are stopped and the segment and common driver outputs will be at

the VSS level. The static display section will be operating.

Note: When using an external power supply, stop external power supply at power save start-up.

For example, when providing each level of LCD drive voltage with external voltage divider, add a circuit

for cutting off current flowing through the resistors of the voltage divider when initiating power save.

The ML9051G has LCD display blanking control pin, DOF, which goes "L" at power save start-up. The

external power supply can be stopped using DOF output.

NOP (Write)

This is a No Operation command.

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

Test (Write)

This is a command for testing the IC chip. Do not use this command. When the test command is issued by mistake,

this state can be released by issuing a NOP command. This command will be ineffective if the TEST0 pin is open

or at the "L" level.

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

*: Invalid data

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