NHD‐0420AZ‐FL‐YBW‐3V3
Character Liquid Crystal Display Module
NHD‐
0420‐
AZ‐
F‐
L‐
Y‐
B‐
W‐
3V3‐
Newhaven Display
4 lines x 20 characters
Model
Transflective
Yellow/Green Backlight
STN‐ Yellow/Green
6:00 view
Wide Temp. (‐20°C ~ +70°C)
3.0 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
nhtech@newhavendisplay.com
nhsales@newhavendisplay.com
[1]
Document Revision History
Revision
0
1
2
•
•
•
•
•
Date
10/21/2008
1/27/2010
1/6/2011
Description
Initial Release
User Guide Reformat
Updated Controller Information
Changed by
‐
MC
JT
Functions and Features
4 lines x 20 characters
Built‐in controllers (SPLC780D or ST7066U)
+3.0V Power Supply
1/16 duty, 1/5 bias
RoHS compliant
[2]
Mechanical Drawing
PIN ASSIGNMENT
1
2
3
4
5
6
15
16
VSS
VDD
V0
RS
R/W
E
LED+
LED-
7~14 DB0~DB7
NEWHAVEN DISPLAY
NHD-0420AZ-FL-YBW-3V3
Pin Description and Wiring Diagram
Pin No. Symbol
1
2
3
4
5
6
7‐10
11‐14
15
16
Vss
VDD
V0
RS
R/W
E
DB0‐DB3
DB4‐DB7
LED+
LED‐
External
Connection
Power Supply
Power Supply
Power Supply
MPU
MPU
MPU
MPU
MPU
Power Supply
Power Supply
Function Description
Ground
Supply voltage for logic (+3.0V)
Power supply for contrast (approx. 0V)
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.
For 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=3.0V
Ta=25°C
Min.
‐20
‐30
2.7
‐
‐
2.2
0
2.4
‐
‐
‐
Typ.
‐
‐
3.0
2
3.0
‐
‐
‐
‐
3.0
150
Max.
+70
+80
3.3
3.0
‐
VDD
0.6
‐
0.4
‐
‐
Unit
⁰C
⁰C
V
mA
V
V
V
V
V
V
mA
‐
Vled=3.0V
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 SPLC780D. Download specification at http://www.newhavendisplay.com/app_notes/SPLC780D.pdf
Built‐in ST7066U. Download specification at http://www.newhavendisplay.com/app_notes/ST7066U.pdf
Display character address code
[5]
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