NHD‐0420Z‐RN‐GBW
Character Liquid Crystal Display Module
NHD‐
0420‐
Z‐
R‐
N‐
G‐
B‐
W‐
Newhaven Display
4 lines x 20 characters
Model
Reflective
No Backlight
STN‐ Gray
6:00 view
Wide Temperature (‐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
nhsales@newhavendisplay.com
nhtech@newhavendisplay.com
[1]
Document Revision History
Revision
0
1
2
3
4
Date
10/21/2008
1/27/2010
6/25/2010
5/23/2011
9/22/2011
Description
Initial Release
User Guide Reformat
Mechanical drawing updated
Electrical characteristics updated
Display interface and DDRAM address updated
Functions and Features
•
•
•
•
•
4 lines x 20 characters
Built‐in controllers (RW1067)
+5.0V Power Supply
1/32 duty, 1/6 bias
RoHS compliant
[2]
Changed by
‐
MC
MP
AK
AK
Mechanical Drawing
Pin connections
Pin NO Symbol
1
VSS
2
VDD
3
V0
4
RS
5
R/W
6
E
7
DB4
8
DB5
9
DB6
DB7
10
NEWHAVEN DISPLAY
NHD-0420Z-RN-GBW
Pin Description and Wiring Diagram
Parallel Interface:
Pin No. Symbol
1
2
3
4
5
6
7‐10
Vss
VDD
V0
RS
R/W
E
DB4‐DB7
External
Connection
Power Supply
Power Supply
Power Supply
MPU
MPU
MPU
MPU
Function Description
Ground
Supply voltage for logic (+5.0V)
Power supply for contrast (approx. ‐1.8V)
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 high order bi‐directional three‐state data bus lines.
Serial Interface (default):
Pin No. Symbol
1
2
3
4
5
6
7
8
9
10
Vss
VDD
V0
NC
NC
NC
NC
DB5/CS
DB6/SCL
DB7/SDA
External
Connection
Power Supply
Power Supply
Power Supply
‐
‐
‐
‐
MPU
MPU
MPU
Function Description
Ground
Supply voltage for logic (+5.0V)
Power supply for contrast (approx. ‐1.8V)
No Connect
No Connect
No Connect
No Connect
Chip Select signal
Serial Clock signal
Serial Data signal
Jumper Selections:
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
4.7
‐
‐
2.5
0
3.9
‐
Typ.
‐
‐
5.0
2
6.8
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Max.
+70
+80
5.5
2.5
‐
VDD
0.6
‐
0.4
‐
‐
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 RW1067. Download specification at http://www.newhavendisplay.com/app_notes/RW1067.pdf
[5]
Table of Commands
[6]
[7]
Display Character Address Code
[8]
Timing Characteristics
[9]
[10]
Built‐in Font Table
[11]
Example Initialization Program
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
[13]
Note
+80⁰C , 48hrs
3
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