DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 11

Technical content

Character Liquid Crystal Display Module NHD- Newhaven Display 0220- 2 Lines x 20 Characters FZ- Model F- Transflective SW- Side White LED Backlight G- STN Positive, Gray B- 6:00 Optimal View W- Wide Temperature P- Pins Header Soldered 33V3- 3.3VDD, 3.0V Backlight RoHS Compliant Newhaven Display International, Inc. 2661 Galvin Ct. Elgin IL, 60124 Ph: 847-844-8795 Fax: 847-844-8796 www.newhavendisplay.com nhtech@newhavendisplay.com nhsales@newhavendisplay.com

[2] Document Revision History Revision Date Description Changed by 0 10/31/11 33V – Improved Liquid; VDD=3.3 V SB 1 3/14/13 Mechanical drawing updated AK 2 7/30/13 Mechanical drawing updated, added timing diagram ML 3 5/26/16 Mechanical drawing updated, Backlight supply, Optical char. TM 4 7/19/16 Mechanical Drawing updated TM 5 8/10/16 Mechanical Drawing updated TM 6 4/17/17 Backlight Characteristics Updated NP Functions and Features

  • 2 lines x 20 characters
  • Built-in controller (ST7066U)
  • +3.3V Power Supply
  • 1/16 duty, 1/5 bias
  • RoHS compliant

A B C D B C D 1 2 3 4 5 6 Mechanical Drawing A [3] 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. NHD-0220FZ-FSW-GBW-P-33V304/17/17 Date Unit Part Number: mm Gen. Tol. ±0.3 Rev Description Date LED+ LED- PIN ASSIGNMENT VSS VDD RS RW 5 DB0~DB7 7~14 LED+15 LED-16 VSS VDD RS RW21 E22 23~26 DB4~DB7 LED+ LED- Notes: 1. Driver: 1/16 Duty, 1/5 Bias 2. Voltage: 3.3V VDD, 3.3V VLCD 3. Display Mode: STN Positive / Gray / Transflective 4. Optimal View: 6:00 5. Backlight: Edge/White 6. Driver IC: ST7066U 8/4-Bit MPU Interface

[4] Pin Description and Wiring Diagram Pin No. Symbol External Connection Function Description

1 VSS Power Supply Ground

2 VDD Power Supply Supply Voltage for logic (+3.3V) 3 V0 Adj Power Supply Supply Voltage for contrast (approx. 0 V) 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. 7-10 DB0 – DB3 MPU Four low order bi-directional three-state data bus lines. These four are not used during 4-bit operation. 11-14 DB4 – DB7 MPU Four high order bi-directional three-state data bus lines.

15 LED+ Power Supply Power supply for LED Backlight (15mA)

16 LED- Power Supply Ground for Backlight

Recommended LCD connector: 1.27mm pitch pins Backlight connector: --- Mates with: ---

[5]

Electrical Characteristics

Item Symbol Condition Min. Typ. Max. Unit Operating Temperature Range TOP Absolute Max -20 - +70 ⁰C Storage Temperature Range TST Absolute Max -30 - +80 ⁰C Supply Voltage VDD - 3.0 3.3 3.6 V Supply Current IDD VDD=3.3V TOP = 25°C 0.5 1.0 2.0 mA Supply for LCD (contrast) VLCD 3.1 3.3 3.5 V “H” Level input VIH - 0.7*VDD - VDD V “L” Level input VIL - VSS - 0.6 V “H” Level output VOH - 0.75 * VDD - VDD V “L” Level output VOL - VSS - 0.2 * VDD V Backlight Supply Current ILED - 10 15 20 mA Backlight Supply Voltage VLED ILED = 15mA 2.7 3.0 3.3 V The LED of the backlight is driven by current drain; drive voltage is for reference only. Drive voltage must be selected to ensure backlight current drain is below MAX level stated. Optical Characteristics Item Symbol Condition Min. Typ. Max. Unit Optimal Viewing Angles Top ϕY+ CR ≥ 2 - 40 - ° Bottom ϕY- - 60 - ° Left θX- - 60 - ° Right θX+ - 60 - ° Contrast Ratio CR - 2 5 - - Response Time Rise TR TOP = 25°C - 150 250 ms Fall TF - 200 300 ms Controller Information Built-in ST7066U controller. Please download specification at http://www.newhavendisplay.com/app_notes/ST7066U.pdf Display Character Address Code 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53

[6] Table of Commands Instruction Instruction code

Description

time (fosc=

270 KHZ RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Display 0 0 0 0 0 0 0 0 0 1 Write “20H” to DDRAM and set DDRAM address to “00H” from AC 1.52ms Return Home 0 0 0 0 0 0 0 0 1 - Set DDRAM Address to “00H” from AC and return cursor to its original position if shifted. The contents of DDRAM are not changed. 1.52ms Entry mode Set 0 0 0 0 0 0 0 1 I/D SH Sets cursor move direction and specifies display shift. These parameters are performed during data write and read. 37µs Display ON/ OFF control 0 0 0 0 0 0 1 D C B D=1: Entire display on C=1: Cursor on B=1: Blinking cursor on 37µs Cursor or Display shift 0 0 0 0 0 1 S/C R/L - - Sets cursor moving and display shift control bit, and the direction without changing DDRAM data. 37µs Function set 0 0 0 0 1 DL N F - - DL: Interface data is 8/4 bits N: Number of lines is 2/1 F: Font size is 5x11/5x8 37µs Set CGRAM Address 0 0 0 1 AC5 AC4 AC3 AC2 AC1 AC0 Set CGRAM address in address counter 37µs Set DDRAM Address 0 0 1 AC6 AC5 AC4 AC3 AC2 AC1 AC0 Set DDRAM address in address counter. 37µs Read busy Flag and Address 0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 Whether during internal operation or not can be known by reading BF. The contents of address counter can also be read. Write data To Address 1 0 D7 D6 D5 D4 D3 D2 D1 D0 Write data into internal RAM (DDRAM/CGRAM). 37µs Read data From RAM 1 1 D7 D6 D5 D4 D3 D2 D1 D0 Read data from internal RAM (DDRAM/CGRAM). 37µs

[7] Timing Characteristics Writing data from MPU to ST7066U Reading data from ST7066U 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=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] 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 lower 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 lower 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] Quality Information Test Item Content of Test Test Condition Note High Temperature storage Endurance test applying the high storage temperature for a long time. +80⁰C , 48hrs 2 Low Temperature storage Endurance test applying the low storage temperature for a long time. -30⁰C , 48hrs 1,2 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 Endurance test applying the electric stress (voltage & current) and the low thermal stress for a long time. -20⁰C , 48hrs 1,2 High Temperature / Humidity Operation Endurance test applying the electric stress (voltage & current) and the high thermal with high humidity stress for a long time. +40⁰C , 90% RH , 48hrs 1,2 Thermal Shock resistance Endurance test applying the electric stress (voltage & current) during a cycle of low and high thermal stress. 0⁰C, 30min -> 25⁰C, 5min -> 50⁰C, 30min = 1 cycle For 10 cycles Vibration test Endurance test applying vibration to simulate transportation and use. 10-55Hz, 15mm amplitude. 60 sec in each of 3 directions X,Y,Z For 15 minutes Static electricity test Endurance test applying electric static discharge. 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