ST7571 Sitronix Technology, ST7571 Datasheet - Page 54

• Manufacturer Part Number: ST7571
• Description: 4 Gray Scale Dot Matrix LCD Controller/Driver
• Manufacturer: Sitronix Technology

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ST7571
Referential Software Functions
Ver 1.5a
void Disable_autoread(void)
{
}
void Read_EE (void)
{
}
void Set_EE _Register (void)
{
// Command 0x51 and 0x52 can be set 16 times for adjusting a suitable Vop
// Maxmum adjusting ranges are +/-16 levels.
}
// Adjust Vop offset here
Write(COMMAND, 0xD1);
Write(COMMAND, 0xAA);
Write(COMMAND, 0x00);
Write(COMMAND, 0xD1);
Write(COMMAND, 0xAA);
Write(COMMAND, 0x13);
Write(COMMAND, 0x20);
Delay(200);
Write(COMMAND, 0x71);
Delay(200);
Write(COMMAND, 0x83);
Write(COMMAND, 0x00);
Write(COMMAND, 0xFD);
Write(COMMAND, 0x8C);
Write(COMMAND, 0x90);
Write(COMMAND, 0x51);
or
Write(COMMAND, 0x52);
Write(COMMAND, 0x00);
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//Enter test command set 2
//Disable auto-read
//Enter normal mode
//Enter test command set 2
//Auto-read disable
//Enter EEPROM mode
//Enable read mode
//Delay 200ms
//Set read pulse
//Delay 200ms
//Exit EEPROM mode
//Enter normal mode
//Enter test command set 1
//Set Vop offset highest bit Vop_j[4]=0
//Set Vop offset Vop_j[3:0]=0
//0x51 for increase Vop offset by 1 level
//0x52 for decrease Vop offset by 1 level
//Enter normal mode
2009/7/21