NHD‐19232WG‐BTMI‐V#T Graphic Liquid Crystal Display Module NHD‐ 19232‐ WG‐ B‐ T‐ M‐ I‐ V#T‐ Newhaven Display 192 x 32 pixels Display Type: Graphic Model White LED Backlight STN‐Blue (‐) Transmissive, 6:00 view, Wide Temp. (‐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 Date 10/9/2007 11/27/2008 4/20/2010 Description Initial Release Backlight info updated User guide reformat Functions and Features • • • • • 192 x 32 pixels Built‐in ST7920 controller +5.0V Power Supply 1/32 duty RoHS Compliant [2] Changed by ‐ ‐ BE Mechanical Drawing [3] Pin Description and Wiring Diagram Pin No. Symbol 1 2 3 4 5 6 7‐14 15 16 A K VSS VDD V0 RS R/W E DB0‐DB7 Vout NC LED+ LED‐ External Connection Power Supply Power Supply Adj. Power Supply MPU MPU MPU MPU Power Supply ‐ Power Supply Power Supply Function Description Ground Power supply 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. Bi‐directional 8‐bit data bus Positive voltage output (+5.0V) No Connect Power supply 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 VDD‐V0 VIH VIL VOH VOL Vled Iled ‐ Condition Absolute Max Absolute Max VDD=5.0V Ta=25°C Min. ‐20 ‐30 4.5 1.5 ‐ 0.7VDD ‐0.3 0.8VDD 0 Typ. ‐ ‐ 5.0 2.0 4.5 ‐ ‐ ‐ ‐ Symbol AV AV AH AH Cr Tr Tf 3.5 32 50,000 Max. +70 +80 5.5 2.8 ‐ VDD 0.6 VDD 0.4 3.6 50 ‐ Unit ⁰C ⁰C V mA V V V V V V mA Hrs. ‐ Vled=3.5V Iled=32mA 3.4 28.8 ‐ Condition Cr ≥ 2 Cr ≥ 2 Cr ≥ 2 Cr ≥ 2 Min. ‐ ‐ ‐ ‐ ‐ ‐ ‐ Typ. 20 40 30 30 3 150 150 Max. ‐ ‐ ‐ ‐ ‐ 200 200 Unit ⁰ ⁰ ⁰ ⁰ ‐ ms ms Optical Characteristics Item Viewing Angle ‐ Vertical Viewing Angle ‐ Vertical Viewing Angle – Horizontal Viewing Angle ‐ Horizontal Contrast Ratio Response Time (rise) Response Time (fall) ‐ ‐ 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 //-------------------------------------------------------------------------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; RW = 0; E = 1; delay(2); E = 0; } void Wdata(char i) { P1 = i; ID = 1; RW = 0; E = 1; delay(2); E = 0; } //--------------------------------------------------------------------------------- [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 , 200hrs 1,2 +70⁰C 200hrs 2 ‐20⁰C , 200hrs 1,2 +60⁰C , 90% RH , 96hrs 1,2 ‐20⁰C,30min ‐> 25⁰C,5min ‐> 70⁰C,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 , 200hrs 3