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 [email protected] [email protected] [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 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] Changed by ‐ BE BE BE Mechanical Drawing 55.7 0.5 51.3 46.7 46.0(VA) 37.85(AA) 4- 1.0PTH 4-R1.25 1.0 6.20 5.50 0.70 0.60 15 1.0 17.78 (P1.27*14) 12.25 1.6 1.5 1.5 18.96 5.1 0.55 0.45 3.0 32.0 0.5 24.7 17.5 14.5(VA) 11.7(AA) 1 14.5max 3.20 2.65 9.0 11.5 30.0 3.65 7.25 8.75 10.15 2.2 4.5 4.85 8.93 31.2 DOT SIZE 15- 0.7PTH 15- 1.0PAD LED or NO B/L The non-specified tolerance of dimension is 80 series or 68 series VR 10K~20K Vdd Vo Vss External contrast adjustment. Vss Vdd Vo RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 A Com1~16 Controller/Com Driver HD44780 or Equivalent Bias and Power Circuit MPU RS R/W E DB0~DB7 0.3mm. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 12X2 LCD Seg1~40 Seg41~60 D M CL1 CL2 Vdd,Vss,V1~V5 Seg Driver Newhaven Display Part No. NHD-0212WH-ATMI-JT# Pin Description and Wiring Diagram Pin No. Symbol 1 2 3 4 5 6 7‐10 VSS VDD V0 RS R/W E DB0 – DB3 External Connection Power Supply Power Supply Adj Power Supply MPU MPU MPU MPU 11‐14 15 DB4 – DB7 A 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 ‐ Typ. ‐ ‐ 5.0 1.2 4.2 ‐ ‐ ‐ ‐ ‐ Vled=3.5V Iled=16mA 3.4 14.4 ‐ 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 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 [7] 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 } /**********************************************************/ [10] 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 >15 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] Quality Information Test Item Content of Test High Temperature storage Endurance test applying the high storage temperature for a long time. Endurance test applying the low storage temperature for a long time. Endurance test applying the electric stress (voltage & current) and the high thermal stress for a long time. 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. Low Temperature storage High Temperature Operation Low Temperature Operation High Temperature / Humidity Operation Thermal Shock resistance Vibration test Static electricity test Test Condition Endurance test applying electric static discharge. 2 ‐30⁰C , 48hrs 1,2 +70⁰C 48hrs 2 ‐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 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] Note +80⁰C , 48hrs 3