NHD-0220WH-MYGH-JT# Newhaven Display, NHD-0220WH-MYGH-JT# Datasheet - Page 11

• Manufacturer Part Number: NHD-0220WH-MYGH-JT#
• Description: LCD Character Display Modules STN-Gray Transfl 146.0 x 43.0
• Manufacturer: Newhaven Display

Specifications of NHD-0220WH-MYGH-JT#

• Character Count X Line: 20 x 2
• Module Size (w X H X T): 146 mm x 43 mm x 13.7 mm
• Fluid Type: STN
• Background Color: Gray
• Voltage Rating: 5 V
• Operating Temperature Range: - 20 C to + 70 C
• Backlight Type: LED Yellow/Green
• Display Mode: Transflective
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NHD-0220WH-MYGH-JT#E

4-bit Initialization:
/**********************************************************/
void command(char i)
{
}
/**********************************************************/
void write(char i)
{
}
/**********************************************************/
void Nybble()
{
}
/**********************************************************/
void init()
{
}
/**********************************************************/
P1 = i;
D_I =0;
R_W =0;
Nybble();
i = i<<4;
P1 = i;
Nybble();
P1 = i;
D_I =1;
R_W =0;
Nybble();
i = i<<4;
P1 = i;
Nybble();
E = 1;
Delay(1);
E = 0;
P1 = 0;
P3 = 0;
Delay(100);
P1 = 0x30;
Delay(30);
Nybble();
Delay(10);
Nybble();
Delay(10);
Nybble();
Delay(10);
P1= 0x20;
Nybble();
command(0x28);
command(0x10);
command(0x0F);
command(0x06);
//put data on output Port
//D/I=LOW : send instruction
//R/W=LOW : Write
//Send lower 4 bits
//Shift over by 4 bits
//put data on output Port
//Send upper 4 bits
//put data on output Port
//D/I=HIGH : send data
//R/W=LOW : Write
//Clock lower 4 bits
//Shift over by 4 bits
//put data on output Port
//Clock upper 4 bits
//enable pulse width
//Clock enable: falling edge
//Wait >15 msec after power is applied
//put 0x30 on the output port
//must wait 5ms, busy flag not available
//command 0x30 = Wake up
//must wait 160us, busy flag not available
//command 0x30 = Wake up #2
//must wait 160us, busy flag not available
//command 0x30 = Wake up #3
//can check busy flag now instead of delay
//put 0x20 on the output port
//Function set: 4-bit interface
//Function set: 4-bit/2-line
//Set cursor
//Display ON; Blinking cursor
//Entry Mode set
>= 300ns