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1 NHD Newhaven Display Lines x 20 Characters WH Display Type: Character M Model T White LED Backlight F FSTN (+) White H Transflective, 6:00 Optimal View JT# English and Japanese Standard Font E ESD Protection RoHS Compliant NHD0220WHMTFHJT# #E Characterr Liquid Crystal Display Module Newhaven Display International, Inc Technology Drive, Suite 101 Elgin IL, Ph: Fax: nhtech@newhavendisplay.com nhsales@newhavendisplay.com

2 Document Revision History Revision Date Description Changed by 0 3/27/2007 Initial Release 1 7/6/2010 User Guide Reformat MC 2 9/24/2010 P/N Change. Part now has ESD Protection MC 3 3/1/2011 Alternate controller information updated AK 4 5/5/2011 Electrical characteristics updated AK 5 2/4/2014 Format, timing, drawing updated ML Functions and Features 2 lines x 20 characters Builtin controller (ST7066U) +5.0V Power Supply 1/16 duty, 1/5 bias RoHS compliant [2]

3 Mechanical Drawing A B C D (VA) (AA) MPU 80 series or 68 series A K RS R/W E DB0~DB P2.54*15= PTH PAD (AA) 123.0(VA) PTH Rev Description Date CONFIDENTIAL VR 10K~20K Vdd Vo Vss External contrast adjustment. Controller/Com Driver ST7066U Bias and Power Circuit N.V. Generator Optional Com1~16 Seg1~40 D M CL1 CL2 Vdd,Vss,V1~V5 20X2 LCD Seg41~100 Seg Driver Gen. Tolerance 02/04/14 ±0.3mm mm NHD-0220WH-MTFH-JT#E The drawing contained herein is the exclusive property of Newhaven Display International, Inc. and shall not be copied, reproduced, and/or disclosed in any format without permission. [3] Max 9.1 LED B/L DOT SIZE SCALE 5/1 Date Unit Model: Vss Vdd Vo RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 LED+ LED- A B C D

4 Pin Description and Wiring Diagram Pin No Symbol VSS VDD V0 RS R/W E DB3 0 DB0 D External Connection Power Supply Power Supply Adj Power Supply MPU MPU MPU MPU 1114 DB4 DB7 MPU 15 LED+ Power Supply 16 LED Power Supply Recommended LCD connector: 2.54mm pitch pins Backlight connector: Mates with: 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 bidirectional threestate data bus lines. These four are not used during 4bit operation. Four high order bidirectional threestate data bus lines. Power supply for LED Backlight (+3.5V) Ground for Backlight [4]

5 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 Symbol Top Tst VDD IDD VDDV0 Vih Vil Voh Vol Condition Absolute Max Absolute Max Ta=25 C, VDD=5.0V Ta=25 C Min VDD VSS 3.9 Typ. Max. Unit +70 ⁰C +80 ⁰C V ma V VDD V 0.6 V V 0.4 V Backlight Supply Voltage Backlight Supply Current Backlight Lifetime Vled Iled Vled= 3.5V Iled=48mA V ma 50,000 Hrs. 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 3 Min. Typ. Max Unit ⁰ ⁰ ⁰ ⁰ ms ms Controller Information Builtin ST7066U. Please download specification at /app_notes/st7066u.pdf Display Character Address Code [5]

6 Table of Commands [6]

7 Timing Characteristics Writing Data from MPU to ST7066U [7]

8 Reading Data from ST7066U to MPU [8]

9 Builtin Font Table [9]

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 [10]

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 [11]

12 Quality Information Test Item Content of Test Test Condition Note High Temperature storage Endurance test applying the high +80⁰C, 48hrs 2 storage temperature for a long time. Low Temperature storage Endurance test applying the low storage 30⁰C, 48hrs 1,2 temperature for a long time. 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 High Temperature / Humidity Operation Thermal Shock resistance Vibration test Endurance test applying the electric stress (voltage & current) and the low thermal stress for a long time. Endurance test applying the electric stress (voltage & current) and the high thermal with high humidity stress for a long time. Endurance test applying the electric stress (voltage & current) during a cycle of low and high thermal stress. Endurance test applying vibration to simulate transportation and use. Static electricity test Endurance test applying electric static discharge. 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 20⁰C, 48hrs 1,2 +40⁰C, 90% RH, 48hrs 1,2 0⁰C,30min > 25⁰C,5min > 50⁰C,30min = 1 cycle 10 cycles 1055Hz, 15mm amplitude. 60 sec in each of 3 directions X,Y,Z For 15 minutes VS=800V, RS=1.5kΩ, CS=100pF One time Warranty Information See Terms and Conditions at 3 [12]

13 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Newhaven Display: NHD-0220WH-MTFH-JT#E