NHD‐0420DZ‐FSB‐GBW
Character Liquid Crystal Display Module
NHD‐
0420‐
DZ‐
F‐
SB‐
G‐
B‐
W‐
Newhaven Display
4 lines x 20 characters
Model
Transflective
Side Blue LED Backlight
STN‐ Gray
6:00 view
Wide Temp. (‐20°C~+70°C)
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
nhtech@newhavendisplay.com
nhsales@newhavendisplay.com
Document Revision History
Revision
0
1
2
3
4
5
6
7
Date
10/21/2008
1/22/2010
2/25/2010
3/19/2010
1/6/2011
5/6/2011
12/5/2011
9/24/2012
Description
Initial Release
User Guide Reformat
Updated Mechanical Drawing
Updated Mechanical Drawing
Updated Controller Information
Electrical characteristics updated
Mechanical drawing updated
Updated mechanical drawing, electrical and optical
characteristics. Added timing characteristics.
Functions and Features
•
•
•
•
•
4 lines x 20 characters
Built‐in controllers (ST7066U)
+5.0V Power Supply
1/16 duty, 1/5 bias
RoHS compliant
[2]
Changed by
‐
MC
MC
BE
JT
AK
AK
JN
Mechanical Drawing
1
2
3
4
5
Rev
6
Description
Date
14
9.3 0.5
A
Pin connections
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-
- 2.5
16
1
B
A
B
C
C
D
D
Date
09/24/12
1
2
3
4
[3]
Gen. Tolerance
Unit
±0.3mm
mm
5
Model:
NHD-0420DZ-FSB-GBW
6
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 (+5.0V)
Power supply for contrast (approx. 0.5V)
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 (+5.0V via on‐board resistor)
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=5.0V
Ta=25°C
Min.
‐20
‐30
4.5
‐
‐
0.7*VDD
VSS
3.9
‐
Typ.
‐
‐
5.0
3.5
4.5
‐
‐
‐
‐
‐
Vled=5.0V
‐
30
5.0
‐
Max.
+70
+80
5.5
5.0
‐
VDD
0.6
VDD
0.4
‐
40
Unit
⁰C
⁰C
V
mA
V
V
V
V
V
V
mA
Optical Characteristics
Item
Viewing Angle – Top
Viewing Angle – Bottom
Viewing Angle – Left
Viewing Angle – Right
Contrast Ratio
Response Time (rise)
Response Time (fall)
Symbol
‐
‐
‐
‐
Cr
Tr
Tf
Condition
Cr ≥ 2
‐
‐
Min.
‐
‐
‐
‐
‐
‐
‐
Typ.
35
60
40
40
6
150
150
Max.
‐
‐
‐
‐
‐
250
250
Controller Information
Built‐in ST7066U controller.
Please download specification at http://www.newhavendisplay.com/app_notes/ST7066U.pdf
Display character address code
[5]
Unit
⁰
⁰
⁰
⁰
‐
ms
ms
Table of Commands
[6]
Timing Characteristics
[7]
[8]
Built‐in Font Table
[9]
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=HIGH : 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 >40 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
}
/**********************************************************/
[10]
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
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
[12]
Note
+80⁰C , 48hrs
3
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