Newhaven Display International, Inc Galvin Ct. Elgin IL, Ph: Fax:

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NHD-0220WH-MTGH-JT#E Character Liquid Crystal Display Module NHD- Newhaven Display 0220-2 Lines x 20 Characters WH- Display Type: Character M- Model T- White LED Backlight G- STN- Gray H-

1 NHD-0220WH-MTGH-JT#E Character Liquid Crystal Display Module NHD- Newhaven Display Lines x 20 Characters WH- Display Type: Character M- Model T- White LED Backlight G- STN- Gray H- Transflective, 6:00 Optimal View, Wide Temperature JT#E- English and Japanese Font, ESD Protection RoHS Compliant Newhaven Display International, Inc Galvin Ct. Elgin IL, Ph: Fax: nhtech@newhavendisplay.com nhsales@newhavendisplay.com [1]

2 Document Revision History Revision Date Description Changed by 0 3/27/2007 Initial Release - 1 2/8/2010 User Guide Reformat BE 2 2/17/2010 Pin description update BE 3 4/30/2010 Updated Backlight Power Supply from 3.5V to 5.0V MP 4 5/12/2010 Updated p/n- Now has ESD Protection MC 5 6/3/2010 Character code, backlight lifetime/voltage updated BE 6 9/24/2010 High and Low level outputs and inputs adjusted MC 7 3/1/2011 Alternate controller information updated AK 8 5/5/2011 Electrical characteristics updated AK 9 5/19/2011 Electrical characteristics updated AK 10 7/21/16 Datasheet Reformat SB 11 6/5/17 Electrical & Optical Char. Updated NP Functions and Features 2 lines x 20 characters Built-in controller (ST7066U) +5.0V Power Supply 1/16 duty, 1/5 bias ESD Protection RoHS compliant [2]

3 Mechanical Drawing A B C 43.0 正 (VA) (AA) A K P2.54*15= PTH PAD (AA) 123.0(VA) PTH Rev Description Date PROPRIETARY D Notes: 15 A 1. Driver: 1/16 Duty, 1/5 Bias 2. Voltage: 5.0V V DD, 4.5V V LCD 16 K 3. Display Mode: STN Positive / Gray / Transflective Unit 4. Optimal View: 6:00 mm 5. Backlight: White LED Gen. Tol. Date Part Number: 6. Driver IC: ST7066U 8/4-Bit MPU Interface ±0.3 06/05/17 NHD-0220WH-MTGH-JT#E The information 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 Vss 2 Vdd 3 Vo 4 RS 5 R/W 6 E 7 DB0 8 DB1 9 DB2 10 DB3 11 DB4 12 DB5 13 DB6 14 DB7 A B C D

4 Pin Description and Wiring Diagram Pin No. Symbol External Connection Function Description 1 V SS Power Supply Ground 2 V DD Power Supply Supply Voltage for logic (+5.0V) 3 V 0 Power Supply Supply Voltage 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 DB0 DB3 MPU Four low order bi-directional three-state data bus lines. These four are not used during 4-bit operation DB4 DB7 MPU Four high order bi-directional three-state data bus lines. 15 LED+ Power Supply Backlight Anode 3.5V) 16 LED- Power Supply Backlight Cathode (Ground) Recommended LCD connector: 2.54mm pitch pins Backlight connector: --- Mates with: --- [4]

5 Electrical Characteristics Item Symbol Condition Min. Typ. Max. Unit Operating Temperature Range T OP Absolute Max ⁰C Storage Temperature Range T ST Absolute Max ⁰C Supply Voltage V DD V Supply Current I DD V DD = 5.0V ma Supply for LCD (contrast) V LCD T OP = 25 C V H Level input V IH - 0.7*V DD - V DD V L Level input V IL - V SS V H Level output V OH V DD V L Level output V OL - V SS V Backlight Supply Current I LED ma Backlight Supply Voltage V LED I LED = 48mA V Backlight Lifetime - I LED = 48mA - 50,000 - Hrs. *The LED Backlight is a current driven device. The brightness is proportional to the amount of current supplied. If the backlight is driven with an external voltage source, a series resistance will need to be selected to ensure the current drain is below the MAX level stated. Optical Characteristics Item Symbol Condition Min. Typ. Max. Unit Top ϕy ⁰ Optimal Bottom ϕy ⁰ Viewing CR 2 Left θx ⁰ Angles Right θx ⁰ Contrast Ratio CR Rise T Response Time R ms T OP = 25 C Fall T F ms Controller Information Built-in ST7066U Controller. Please download specification at DDRAM Address A 0B 0C 0D 0E 0F A 4B 4C 4D 4E 4F [5]

6 Table of Commands Instruction Clear Display Return Home Entry mode Set Display ON/ OFF control Cursor or Display shift Function set Set CGRAM Address Set DDRAM Address Read busy Flag and Address Write data To Address Read data From RAM Instruction code RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB I/D SH D C B S/C R/L DL N F AC5 AC4 AC3 AC2 AC1 AC AC6 AC5 AC4 AC3 AC2 AC1 AC0 0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 1 0 D7 D6 D5 D4 D3 D2 D1 D0 1 1 D7 D6 D5 D4 D3 D2 D1 D0 Description Write 20H to DDRAM and set DDRAM address to 00H from AC Set DDRAM Address to 00H from AC and return cursor to its original position if shifted. The contents of DDRAM are not changed. Sets cursor move direction and specifies display shift. These parameters are performed during data write and read. D=1: Entire display on C=1: Cursor on B=1: Blinking cursor on Sets cursor moving and display shift control bit, and the direction without changing DDRAM data. DL: Interface data is 8/4 bits N: Number of lines is 2/1 F: Font size is 5x11/5x8 Set CGRAM address in address counter Set DDRAM address in address counter. Whether during internal operation or not can be known by reading BF. The contents of address counter can also be read. Write data into internal RAM (DDRAM/CGRAM). Read data from internal RAM (DDRAM/CGRAM). Execution time (fosc= 270 KHZ 1.52ms 1.52ms 0s [6]

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

8 Reading data from ST7066U to MPU [8]

9 Built-in 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 upper 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 upper 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 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 Warranty Information and Terms & Conditions [12]

Newhaven Display International, Inc Galvin Ct. Elgin IL, Ph: Fax:

Newhaven Display International, Inc Galvin Ct. Elgin IL, Ph: Fax: NHD-0108HZ-FSW-GBW Character Liquid Crystal Display Module NHD- Newhaven Display 0108-1 Line x 8 Characters HZ- Model F- Transflective SW- Side White LED Backlight G- STN- Gray B- 6:00 Optimal View W-