ST7033

Ver 1.1

20/39

2009/07/17

Power Save Mode

If the display all points ON command is executed when the display is in display OFF mode, power saver mode is entered.

This mode stops every operation of the LCD display system.

Figure 8. Power Save Mode

The internal states in power save mode are as follows:

-The oscillator circuit is stopped

-The LCD driver circuit is stopped

-The LCD driver circuit is stopped and segment/common driver output s to VSS level

-The display data and operation mode before execution of the Power save are held, and the MCU can access to the

DDRAM and internal registers.

Reset

When this command is issued, the driver is initialized. This command doesn’t change DDRAM content.

A0

D7

D6

D5

D4

D3

D2

D1

D0

Description

0

1

1

1

0

0

0

1

0

Software reset

NOP

Non-operation command

A0

D7

D6

D5

D4

D3

D2

D1

D0

Description

0

1

1

1

0

0

0

1

1

No operation

Power save (Display OFF & Display all points ON)

Power save mode

Power save OFF (Display all points OFF)

Power save mode canceled

Command

Effect