NHD‐14432WG‐ATFH‐V#T Graphic Liquid Crystal Display Module NHD‐ 14432‐ WG‐ A‐ T‐ F‐ H‐ V#T‐ Newhaven Display 144 x 32 pixels Display type: Graphic Model White LED backlight FSTN (+) Transflective, 6:00 View, Wide Temperature (‐20°C ~ +70°C) Built‐in Positive Voltage 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 4 Date 2/28/2008 4/5/2010 5/5/2010 5/10/2010 5/25/2010 Description Initial Release User guide reformat Updates BLOCK DIAGRAM UPDATED Contrast updated Functions and Features • • • • • 144x32 pixels Built‐in ST7920 Controller +5.0V power supply 1/32 duty RoHS Compliant [2] Changed by ‐ BE BE BE BE H1Max H2 60.44(AA) LED B/L Drive Method 1.Drive from A,K R (P2.54*4) A 144*32 DOTS K 5- 1.0 2 1 80.0 4- 2.5 PTH 4- 5.0 PAD 2.5 2.54 7.84 pin15 R R LED H/L B/L High Low H2 8.6 7.5 A K B/L LCM 3.Drive from Vdd,Vss R A K Vss Vdd Vo RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 LED+ LED- B/L LCM (Contrast performance may go down.) 0.42 0.38 (P2.54*8) 17.78 B/L pin16 H1 13.2 12.1 0.42 0.38 A K 2.Drive from pin15, pin16 1.6 45.0 2.5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2.0 15 13.4(AA) 16 36.0 0.5 31.0 25.2 16.0(VA) 85.0 0.5 71.2 66.0(VA) 9.4 12.0 14.78 10.16 12.92 2.5 5.4 10.0 11.3 Mechanical Drawing 16- 1.0 PTH 16- 1.8 PAD DOT SIZE SCALE 10/1 Newhaven Display PIN DETAIL Part No. NHD-14432WG-ATFH-V#T Pin Description and Wiring Diagram Pin No. Symbol 1 2 3 4 5 6 7‐14 15 16 VSS VDD V0 RS R/W E DB0‐DB7 LED+ LED‐ External Connection Power Supply Power Supply Adj Power Supply MPU MPU MPU MPU Power Supply Power Supply Function Description Ground Power supply for Logic (+5.0V) Power Supply for contrast (approx. +4.8V) Register select: 1=Data, 0=Instruction Read/Write select signal, R/W=1: Read R/W: =0: Write Operation enable signal. Falling edge triggered. This is an 8‐bit‐directional data bus Power for LED backlight (+3.5V) Ground for Backlight Recommended LCD connector: 2.54mm 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 V0 Vih Vil Voh Vol Vled Iled ‐ Condition Absolute Max Absolute Max Vled=3.5V Iled=40mA ‐ ‐ ‐ 3.5 40 50,000 Max. +70 +80 5.5 3.5 VDD 0.6 VDD 0.4 3.9 80 ‐ Condition Cr ≥ 2 Cr ≥ 2 Cr ≥ 2 Cr ≥ 2 Min. ‐ ‐ ‐ ‐ Typ. 20 40 30 30 3 200 200 Max. ‐ ‐ ‐ ‐ 300 300 Ta=25°, VDD=5.0V Ta=25° Min. ‐20 ‐30 4.5 1.6 Typ. ‐ ‐ 5.0 2.2 4.8 0.7VDD ‐0.3 0.8VDD 0 Unit ⁰C ⁰C V mA V V V V V V mA Hrs. Unit ⁰ ⁰ ⁰ ⁰ ms ms 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 AH AH AV AV Cr Tr Tf Controller Information Built‐in ST7920. Download specification at http://www.newhavendisplay.com/app_notes/ST7920.pdf [5] Table of Commands [6] [7] Timing Characteristics [8] [9] Example Initialization Program //‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ #include <REG52.H> #include "AL.h" sbit ID = P3^0; sbit RW = P3^7; sbit E = P3^4; //‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ void Init() { Wcom(0x38); Wcom(0x0C); Wcom(0x06); Wcom(0x02); Wcom(0x01); delay(10); Row = 0x80; for(Counthi = 1; Counthi <=32; Counthi++) { Wcom(0x3E); Wcom(Row); Wcom(0x80); for(Count = 1; Count <=40; Count++) { Wdata(0x00); } Row++; } } //‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ void Wcom(char i) { P1 = i; ID = 0; //Reset P3.0 RW = 0; //Reset P3.7 E = 1; //Set P3.4 delay(1); E = 0; //Reset P3.4 } void Wdata(char i) { P1 = i; ID = 1; //Set P3.0 RW = 0; //Reset P3.7 E = 1; //Set P3.4 delay(1); E = 0; //Reset P3.4 } [10] 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 [11] Note +80⁰C , 48hrs 3