Command

Description

Set Display On/Off

(Display Mode/Standby Mode)

The display on command turns the LCD common and segment outputs on and has

no effect to the static icons output. This command causes the conversion of data in

BGDRAM to necessary waveforms on the common and segment driving outputs.

The on-chip bias generator is also turned on by this command.

(Note:

²oscillator on² command should be sent before ²display on² is selected.)

The display off command turns the display off and the states of the LCD driver are

as follow during display off:

mand.

Set BGDRAM Page Address

This command positions the row address to 1 of 5 possible positions in BGDRAM.

Master Clear BGDRAM

This command is to clear the 480 byte BGDRAM by setting the RAM data to zero.

Issue this command followed by a dummy writes command. The RAM for icon line

will not be affected by this command.

Master Clear Icons

This command is used to clear the data in page 5 of BGDRAM, which stores the

icon line data. Before using this command, set the page address to page 5 by the

command

²set BGDRAM page address². A dummy write data is also needed after

this

²master clear Icons² command to make the clear icon action effective.

Set Display with Icon Line

If 1/32 Mux selected, use this command change to 1/33 Mux for using the Icon line.

This command can also change Icon display mode to normal display mode (1/32 or

1/33 MUX).

Set Icon Display Mode

This command forces the output to the icon display mode. Display on row 0 to row

31 will be disabled.

Set Icon Line/Static Icon

Contrast Level

The contrast of the icon line and static icon in icon mode can be set by this com-

mand. There are four levels to select from.

Set Vertical Scroll Value

This command is used to scroll the screen vertically with scroll value 0 to 31. With

scroll value equals to 0, row 0 of BGDRAM is mapped to com 0 and row 1 through

row 31 are mapped to com 1 through com 31 respectively. With scroll value equal

to 1, row 1 of BGDRAM is mapped to com 0, then row 2 through row 31 will be

mapped to com 1 through com 30 respectively and row 0 will be mapped to com 31.

Com 32 is not affected by this command.

Save/Restore BGDRAM

Column Address

With bit option=1 in this command, the save/restore column address command

saves a copy of the column address of BGDRAM. With a bit option=0, this com-

mand restores the copy obtained from the previous execution of saving column ad-

dress.

This instruction is very useful for writing full graphics characters that are larger than

8 pixels vertically.

Set Column Mapping

This instruction selects the mapping of BGDRAM to segment drivers for mechani-

cal flexibility. There are 2 mappings to select:

COM 32 will not be affected by this command. Detailed information please refer to

section

²display output description².

Set Row Mapping

This instruction selects the mapping of BGDRAM to common drivers for mechani-

cal flexibility. There are 2 mappings to select:

COM 32 will not be affected by this command. Detail information please refer to

section

²display output description².

HT0610

Rev. 1.00

13

February 24, 2004