NHD-0420DZ-FL-YBW-3V3 Newhaven Display, NHD-0420DZ-FL-YBW-3V3 Datasheet - Page 8

• Manufacturer Part Number: NHD-0420DZ-FL-YBW-3V3
• Description: LCD MOD CHAR 4X20 Y/G TRANSFL
• Manufacturer: Newhaven Display

Specifications of NHD-0420DZ-FL-YBW-3V3

• Display Type: STN - Super-Twisted Nematic
• Display Mode: Transflective
• Number Of Digits/alpha: 80
• Outline L X W X H: 98.00mm x 60.00mm x 13.50mm
• Viewing Area: 76.00mm L x 25.20mm W
• Backlight: LED - Yellow/Green
• Display Format: 20 x 4
• Character Size: 4.75mm H x 2.95mm W
• Character Format: 5 x 8 Dots
• Voltage - Supply: 3.3V
• Dot Size: 0.55mm W x 0.55mm H
• Operating Temperature: -20°C ~ 70°C
• Character Count X Line: 20 x 4
• Module Size (w X H X T): 98 mm x 60 mm 14 mm
• Fluid Type: STN
• Background Color: Yellow/Green
• Voltage Rating: 3.3 V
• Operating Temperature Range: - 20 C to + 70 C
• Backlight Type: LED Yellow/Green
• For Use With: NHDEV - BOARD DEV LCD COG TFT 100X95MM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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
[8]
>= 300ns