NHD-0420DZ-FL-YBW-3V3

 NHD‐0420DZ‐FL‐YBW‐3V3 Character Liquid Crystal Display Module NHD‐ 0420‐ DZ‐ F‐ L‐ Y‐ B‐ W‐ 3V3‐ Newhaven Display 4 lines x 20 characters Model Transflective Yellow/Green LED Backlight STN‐ Yellow/Green 6:00 view Wide Temp. (‐20°C~+70°C) 3.3 Vdd, 3.0 Volt backlight RoHS Compliant Newhaven Display International, Inc. 2511 Technology Drive, Suite 101 Elgin IL, 60124 Ph: 847‐844‐8795 Fax: 847‐844‐8796 www.newhavendisplay.com [email protected] [email protected] [1] Document Revision History Revision 0 1 2 3 4 5 Date 10/21/2008 1/26/2010 2/25/2010 3/19/2010 1/6/2011 5/6/2011 Description Initial Release User Guide Reformat Updated Mechanical Drawing Mechanical drawing/pin description updated Updated Controller Information Electrical characteristics updated Functions and Features •
•
•
•
•
4 lines x 20 characters Built‐in controllers (ST7066U) +3.3V Power Supply 1/16 duty, 1/5 bias RoHS compliant [2] Changed by ‐ MC MC BE JT AK Mechanical Drawing
14
9.3 0.5
Pin connections
- 2.5
1
16
Pin NO Symbol
1
VSS
2
VDD
3
V0
4
RS
5
R/W
6
E
7
DB0
8
DB1
9
DB2
10
DB3
11
DB4
12
DB5
13
DB6
14
DB7
15
LED+
16
LED-
NEWHAVEN DISPLAY
NHD-0420DZ-FL-YBW-3V3
Pin Description and Wiring Diagram Pin No. Symbol 1 2 3 4 5 6 7‐10 Vss VDD V0 RS R/W E DB0‐DB3 External Connection Power Supply Power Supply Power Supply MPU MPU MPU MPU 11‐14 15 16 DB4‐DB7 LED+ LED‐ MPU Power Supply Power Supply Function Description
Ground
Supply voltage for logic (+3.3V)
Power supply for contrast (approx. 0.3V)
Register select signal. RS=0: Command, RS=1: Data Read/Write select signal, R/W=1: Read R/W:=0: Write Operation enable signal. Falling edge triggered.
Four low order bi‐directional three‐state data bus lines. These four are not used during 4‐bit operation. Four high order bi‐directional three‐state data bus lines. Power supply for LED Backlight (+3.0V)
Ground for backlight
Recommended LCD connector: 2.54mm pitch pins Backlight connector: ‐‐‐ Mates with: ‐‐‐ [4] Electrical Characteristics Item Operating Temperature Range Storage Temperature Range Supply Voltage Supply Current Supply for LCD (contrast) “H” Level input “L” Level input “H” Level output “L” Level output Backlight Supply Voltage Backlight Supply Current Symbol Top Tst VDD IDD VDD‐V0 Vih Vil Voh Vol Vled Iled Condition
Absolute Max
Absolute Max
Ta=25°C, VDD=3.3V
Ta=25°C Min.
‐20
‐30
3.0
‐
2.8
0.7 VDD
0
0.75 VDD
‐
Typ.
‐
‐
3.3
2
3.0
‐
‐
‐
‐
‐
Vled=3.0V
‐
‐
3.0
240
Max. +70 +80 3.5 3.0 3.3 VDD 0.6 ‐ 0.2 VDD 3.3 ‐ Unit
⁰C
⁰C
V
mA
V
V
V
V
V
V
mA
Optical Characteristics Item Viewing Angle – Vertical (top) Viewing Angle – Vertical (bottom) Viewing Angle – Horizontal (left) Viewing Angle – Horizontal (right) Contrast Ratio Response Time (rise) Response Time (fall) Symbol AV AV AH AH Cr Tr Tf Condition
Cr ≥ 2
Cr ≥ 2
Cr ≥ 2
Cr ≥ 2
‐
‐
Min.
‐
‐
‐
‐
‐
‐
‐
Typ.
25
70
30
30
2
120
120
Max. ‐ ‐ ‐ ‐ ‐ 150 150 Unit
⁰ ⁰ ⁰ ⁰ ‐ ms
ms
Controller Information Built‐in ST7066U. Download specification at http://www.newhavendisplay.com/app_notes/ST7066U.pdf Display character address code [5] Command Table [6] Built‐in Font Table [7] Example Initialization Program 8-bit Initialization:
/**********************************************************/
void command(char i)
{
P1 = i;
//put data on output Port
D_I =0;
//D/I=LOW : send instruction
R_W =0;
//R/W=LOW : Write
E = 1;
Delay(1);
//enable pulse width >= 300ns
E = 0;
//Clock enable: falling edge
}
/**********************************************************/
void write(char i)
{
P1 = i;
//put data on output Port
D_I =1;
//D/I=LOW : send data
R_W =0;
//R/W=LOW : Write
E = 1;
Delay(1);
//enable pulse width >= 300ns
E = 0;
//Clock enable: falling edge
}
/**********************************************************/
void init()
{
E = 0;
Delay(100);
//Wait >15 msec after power is applied
command(0x30);
//command 0x30 = Wake up
Delay(30);
//must wait 5ms, busy flag not available
command(0x30);
//command 0x30 = Wake up #2
Delay(10);
//must wait 160us, busy flag not available
command(0x30);
//command 0x30 = Wake up #3
Delay(10);
//must wait 160us, busy flag not available
command(0x38);
//Function set: 8-bit/2-line
command(0x10);
//Set cursor
command(0x0c);
//Display ON; Cursor ON
command(0x06);
//Entry mode set
}
/**********************************************************/
[8] 4-bit Initialization:
/**********************************************************/
void command(char i)
{
P1 = i;
//put data on output Port
D_I =0;
//D/I=LOW : send instruction
R_W =0;
//R/W=LOW : Write
Nybble();
//Send lower 4 bits
i = i<<4;
//Shift over by 4 bits
P1 = i;
//put data on output Port
Nybble();
//Send upper 4 bits
}
/**********************************************************/
void write(char i)
{
P1 = i;
//put data on output Port
D_I =1;
//D/I=HIGH : send data
R_W =0;
//R/W=LOW : Write
Nybble();
//Clock lower 4 bits
i = i<<4;
//Shift over by 4 bits
P1 = i;
//put data on output Port
Nybble();
//Clock upper 4 bits
}
/**********************************************************/
void Nybble()
{
E = 1;
Delay(1);
//enable pulse width >= 300ns
E = 0;
//Clock enable: falling edge
}
/**********************************************************/
void init()
{
P1 = 0;
P3 = 0;
Delay(100);
//Wait >15 msec after power is applied
P1 = 0x30;
//put 0x30 on the output port
Delay(30);
//must wait 5ms, busy flag not available
Nybble();
//command 0x30 = Wake up
Delay(10);
//must wait 160us, busy flag not available
Nybble();
//command 0x30 = Wake up #2
Delay(10);
//must wait 160us, busy flag not available
Nybble();
//command 0x30 = Wake up #3
Delay(10);
//can check busy flag now instead of delay
P1= 0x20;
//put 0x20 on the output port
Nybble();
//Function set: 4-bit interface
command(0x28);
//Function set: 4-bit/2-line
command(0x10);
//Set cursor
command(0x0F);
//Display ON; Blinking cursor
command(0x06);
//Entry Mode set
}
/**********************************************************/
[9] Quality Information Test Item Content of Test High Temperature storage Endurance test applying the high storage temperature for a long time. Endurance test applying the low storage temperature for a long time. Endurance test applying the electric stress (voltage & current) and the high thermal stress for a long time. Endurance test applying the electric stress (voltage & current) and the low thermal stress for a long time. Endurance test applying the electric stress (voltage & current) and the high thermal with high humidity stress for a long time. Endurance test applying the electric stress (voltage & current) during a cycle of low and high thermal stress. Endurance test applying vibration to simulate transportation and use. Low Temperature storage High Temperature Operation Low Temperature Operation High Temperature / Humidity Operation Thermal Shock resistance Vibration test Static electricity test Test Condition Endurance test applying electric static discharge. 2 ‐30⁰C , 48hrs
1,2
+70⁰C 48hrs
2 ‐20⁰C , 48hrs
1,2
+40⁰C , 90% RH , 48hrs 1,2
0⁰C,30min ‐> 25⁰C,5min ‐> 50⁰C,30min = 1 cycle 10 cycles 10‐55Hz , 15mm amplitude. 60 sec in each of 3 directions X,Y,Z For 15 minutes VS=800V, RS=1.5kΩ, CS=100pF One time Note 1: No condensation to be observed. Note 2: Conducted after 4 hours of storage at 25⁰C, 0%RH. Note 3: Test performed on product itself, not inside a container. Precautions for using LCDs/LCMs See Precautions at www.newhavendisplay.com/specs/precautions.pdf Warranty Information and Terms & Conditions http://www.newhavendisplay.com/index.php?main_page=terms [10] Note
+80⁰C , 48hrs
3