ST7530 datasheet(59/100 Pages) SITRONIX

59 / 100 page

ST7530

Ver 1.8

59/100

2006/9/18

8.2 Referential Instruction Setup Flow

8.2.1 EEPROM Setting Flow

The ST7530 provide the Write and Read function to write the Electronic Control value into and read them from the built-in

EEPROM. Using the Write and Read functions, you can store these values appropriate to each LCD panel. This function is

very convenient for user in setting from some different panel’s voltage. But using this function must attention the setting

procedure. Please see the following diagram.

Note: When “

Writing” value to EEPROM, the voltage of VOUTIN must be more than 18V.

Figure 8.2.1.1 Flow of EC value adjustment and writing into EEPROM

Increase or decrease EC value

( command D6H or D7H )

( get the V0 value you need )

Close Extension mode

(command 30H)

Turn off the power

Wait for 100ms

Turn on the power

Check the EC value

Make sure the Action:

End of Initialization Flow

Initial Code(1)

OSC On

Power Control On

EC Value Adjustment Flow

Open Extension mode

(command 31H)

Display Off

(command AEH)

Initial Code(1)

(command 07H)

(parameter 19H)

Enable EEPROM

(command CDH)

(parameter 20H)

Wait for 100ms

Write into EEPROM

(command FCH)

Wait for 100ms

Disable EEPROM

(command CCH)

Close Extension mode

(command 30H)

Display On

(command AFH)

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