NHD‐0212WH‐ATMI‐JT#
Character Liquid Crystal Display Module
NHD‐ 0212‐ WH‐ A‐ T‐ M‐ I‐ JT#‐ Newhaven Display 2 lines x 12 characters Display Type: Character Model White LED Backlight STN‐ Blue (‐) Transmissive, 6:00 view, Wide Temp. (‐20°C~+70°C) English/Japanese standard font 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 • • • • • Date 2/15/2008 11/5/2009 1/5/2010 10/4/2010 Description Initial Release User Guide Reformat Optical revised Mechanical drawing updated Changed by ‐ BE BE BE
Functions and Features
2 lines x 12 characters Built‐in controller (ST7066 or equivalent) +5.0V Power Supply 1/16 duty, 1/5 bias RoHS compliant
[2]
Mechanical Drawing
1.0
2.2 4.5 4.85 8.93
3.65 7.25 8.75 10.15
55.7 0.5 51.3 46.7 46.0(VA) 37.85(AA)
4- 1.0PTH
3.20 2.65 0.55 0.45
14.5max 5.1
32.0 0.5 24.7 17.5 14.5(VA) 11.7(AA)
9.0 11.5 30.0
1
15
18.96 4-R1.25 12.25
1.0 17.78 (P1.27*14) 31.2
1.5
1.6
DOT SIZE
LED or NO B/L
15- 0.7PTH 15- 1.0PAD
The non-specified tolerance of dimension is
0.3mm.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Vss Vdd Vo RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 A
MPU
80 series or 68 series
RS R/W E DB0~DB7
Com1~16
Controller/Com Driver HD44780 or Equivalent
1.5
12X2 LCD
Seg1~40 Seg41~60
VR 10K~20K
Vdd Vo Vss
Bias and Power Circuit
3.0
D M CL1 CL2 Vdd,Vss,V1~V5
Seg Driver
6.20 5.50 0.70 0.60
Newhaven Display
Part No.
External contrast adjustment.
NHD-0212WH-ATMI-JT#
Pin Description and Wiring Diagram
Pin No. Symbol 1 2 3 4 5 6 7‐10 11‐14 15 VSS VDD V0 RS R/W E DB0 – DB3 DB4 – DB7 A External Connection Power Supply Power Supply Adj Power Supply MPU MPU MPU MPU MPU Power Supply Function Description Ground Supply Voltage for logic (+5.0V) Power supply for contrast (approx. 0.8V) 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 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 (+3.5V)
Recommended LCD connector: 1.27mm 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 Backlight Lifetime 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 ‐ 3.5 0.7VDD 0 3.9 ‐ 3.4 14.4 ‐ Typ. ‐ ‐ 5.0 1.2 4.2 ‐ ‐ ‐ ‐ 3.5 16 10,000 Max. +70 +80 5.5 ‐ 5.7 VDD 0.6 ‐ 0.4 3.6 25 ‐ Unit ⁰C ⁰C V mA V V V V V V mA Hrs
‐ Vled=3.5V Iled=16mA
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 ST7066. Download specification at http://www.newhavendisplay.com/app_notes/ST7066.pdf [5]
Table of Commands
[6]
Timing Characteristics
Writing data from MPU to ST7066
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Reading data from ST7066 to MPU
[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=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 } /**********************************************************/
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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
3
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]
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