NHD-0220GZ-FSW-GBW-LE-E
Character Liquid Crystal Display Module
NHD- Newhaven Display
0220- 2 Lines x 20 Characters
GZ- Model
F- Transflective
SW- Side White LED Backlight
G- STN Positive, Gray
B- 6:00 Optimal View
W- Wide Temperature
LE- J6 Frame Ground
E- European Font
RoHS Compliant
Newhaven Display International, Inc.
2661 Galvin Ct.
Elgin IL, 60124
Ph: 847-844-8795 Fax: 847-844-8796
www.newhavendisplay.com
nhtech@newhavendisplay.com nhsales@newhavendisplay.com
[2]
Document Revision History
Revision
Date
Description
Changed By
0
5/14/2010
Initial Release
-
1
5/14/2010
User Guide Reformat
BE
2
1/7/2011
Alternate controller information updated
AK
3
5/5/2011
Electrical characteristics updated
AK
4
10/11/16
Mechanical Drawing, Electrical & Optical Char. Updated
TM
Functions and Features
• 2 lines x 20 characters
• Built-in controller (ST7066U)
• +5.0V Power Supply
• European Font
• J6 Frame Ground
• 1/16 duty, 1/5 bias
• RoHS compliant
PROPRIETARY
1 2 3 4 5 6
A
B
C
D
B
C
D
1 2 3 4 5 6
Mechanical Drawing
A
[3]
The informaon contained herein is the exclusive property of Newhaven Display Internaonal, Inc. and shall not be copied, reproduced, and/or disclosed in any format without permission.
NHD-0220GZ-FSW-GBW-LE-E
10/11/16
Date
Unit
Part Number:
mm
Gen. Tol.
±0.3
Rev Descripon Date
116
1 VSS
2 VDD
3 V0
4 RS
5 R/W
6 E
7~14 DB0~DB7
15 LED+
16 LED-
PIN ASSIGNMENT
Notes:
1. Driving: 1/16duty, 1/5bias
2. Voltage: VDD 5.0V, VLCD 4.5V
3. Display Type: STN Gray, Posive, Transflecve
4. Opmal View: 6:00
5. Backlight: White, Edge Light
6. Driver IC: ST7066U 8/4-bit MPU interface
[4]
Pin Description and Wiring Diagram
Pin No.
Symbol
External
Connection
Function Description
1
VSS
Power Supply
Ground
2
VDD
Power Supply
Supply Voltage for logic (+5.0V)
3
V0
Adj Power Supply
Power supply for contrast (approx. 0.5V)
4
RS
MPU
Register Select signal. RS=0: Command, RS=1: Data
5
R/W
MPU
Read/Write select signal, R/W=1: Read R/W =0: Write
6
E
MPU
Operation Enable signal. Falling edge triggered.
7-10
DB0 – DB3
MPU
Four low order bi-directional three-state data bus lines. These four
are not used during 4-bit operation.
11-14
DB4 – DB7
MPU
Four high order bi-directional three-state data bus lines.
15
LED+
Power Supply
Backlight Anode (+5.0V via on-board resistor)
16
LED-
Power Supply
Backlight Cathode(Ground)
Recommended LCD connector: 2.54mm pitch pins
Backlight connector: --- Mates with: ---
[5]
Electrical Characteristics
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Operating Temperature Range
TOP
Absolute Max
-20
-
+70
⁰C
Storage Temperature Range
TST
Absolute Max
-30
-
+80
⁰C
Supply Voltage
VDD
-
4.8
5.0
5.2
V
Supply Current
IDD
Ta=25°C,
VDD=5.0V
1.5
2.0
2.5
mA
Supply for LCD (contrast)
VLCD
4.3
4.5
4.7
V
“H” Level input
VIH
-
0.7*VDD
-
VDD
V
“L” Level input
VIL
-
0
-
0.6
V
“H” Level output
VOH
-
3.9
-
-
V
“L” Level output
VOL
-
-
-
0.4
V
Backlight Supply Voltage
VLED
-
4.8
5.0
5.2
V
Backlight Supply Current
ILED
VLED =5.0V
10
15
20
mA
Optical Characteristics
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Optimal
Viewing
Angles
Top
ϕY+
CR ≥ 2
-
40
-
⁰
Bottom
ϕY-
-
60
-
⁰
Left
θX-
-
60
-
⁰
Right
θX+
-
60
-
⁰
Contrast Ratio
CR
-
2
5
-
-
Response Time
Rise
TR
TOP = 25°C
-
150
250
ms
Fall
TF
-
200
300
ms
Controller Information
Built-in ST7066U controller.
Please download specification at http://www.newhavendisplay.com/app_notes/ST7066U.pdf
DDRAM Address
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
50
51
52
53
[6]
Table of Commands
Instruction
Instruc t ion code
Description
Execution
time (fosc=
270 KHZ
RS R/W DB7
DB6 DB5
DB4 DB3
DB2 DB1
DB0
Clear
Display 0 0 0 0 0 0 0 0 0 1
Write “20H” to DDRAM and
set DDRAM address to
“00H” from AC
1.52ms
Return
Home 0 0 0 0 0 0 0 0 1 -
Set DDRAM Address to
“00H” from AC and return
cursor to its original position
if shifted. The contents of
DDRAM are not changed.
1.52ms
Entry mode
Set 0 0 0 0 0 0 0 1 I/D SH
Sets cursor move direction
and specifies display shift.
These parameters are
performed during data write
and read.
37µs
Display ON/
OFF control
0 0 0 0 0 0 1 D C B
D=1: Entire display on
C=1: Cursor on
B=1: Blinking cursor on
37µs
Cursor or
Display
shift 0 0 0 0 0 1 S/C
R/L
- -
Sets cursor moving and
display shift control bit, and
the direction without
changing DDRAM data.
37µs
Function
set 0 0 0 0 1 DL N F - - DL: Interface data is 8/4 bits
N: Number of lines is 2/1
F: Font size is 5x11/5x8
37µs
Set
CGRAM
Address
0 0 0 1 AC5 AC4 AC3 AC2 AC1 AC0
Set CGRAM address in
address counter 37µs
Set
DDRAM
Address
0 0 1 AC6 AC5 AC4 AC3 AC2 AC1 AC0
Set DDRAM address in
address counter. 37µs
Read busy
Flag and
Address 0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0
Whether during internal
operation or not can be
known by reading BF. The
contents of address counter
can also be read.
0s
Write data
To Address
1 0 D7 D6 D5 D4 D3 D2 D1 D0
Write data into internal RAM
(DDRAM/CGRAM).
37µs
Read data
From RAM
1 1 D7 D6 D5 D4 D3 D2 D1 D0
Read data from internal
RAM (DDRAM/CGRAM).
37µs
[7]
Timing Characteristics
Writing data from MPU to ST7066U
[8]
Reading data from ST7066U to MPU
[9]
Built-in Font Table
[10]
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
}
/**********************************************************/
[11]
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 >40 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
}
/**********************************************************/
[12]
Quality Information
Test Item
Content of Test
Test Condition
Note
High Temperature storage
Endurance test applying the high storage
temperature for a long time.
+80⁰C , 48hrs
2
Low Temperature storage
Endurance test applying the low storage
temperature for a long time.
-30⁰C , 48hrs
1,2
High Temperature
Operation
Endurance test applying the electric stress
(voltage & current) and the high thermal
stress for a long time.
+70⁰C , 48hrs
2
Low Temperature
Operation
Endurance test applying the electric stress
(voltage & current) and the low thermal
stress for a long time.
-20⁰C , 48hrs
1,2
High Temperature /
Humidity Operation
Endurance test applying the electric stress
(voltage & current) and the high thermal
with high humidity stress for a long time.
+40⁰C , 90% RH , 48hrs
1,2
Thermal Shock resistance
Endurance test applying the electric stress
(voltage & current) during a cycle of low
and high thermal stress.
0⁰C, 30min -> 25⁰C, 5min ->
50⁰C, 30min = 1 cycle
For 10 cycles
Vibration test
Endurance test applying vibration to
simulate transportation and use.
10-55Hz, 1.5mm amplitude.
60 sec in each of 3 directions
X,Y,Z
For 15 minutes
3
Static electricity test
Endurance test applying electric static
discharge.
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
See Terms & Conditions at http://www.newhavendisplay.com/index.php?main_page=terms
