lcd module 1602a qapass datasheet pdf free sample

LCD USES manualDirectory(1) Summarize(2) shape dimension(3) module mainly hardware description(4) the external interface module(5) command instructions(6) reading and writing operation sequence(7) software initialization

1 foot: for to power VSS.2 feet: VDD take 5 V is power.3 feet: VL for LCD contrast the adjustment, and then when the power is the weakestcontrast, grounded contrast the highest, and the contrastThrough high can produce the "ghost", when used, can pass a 10 K adjustpotentiometer contrast.4 feet: RS for registers choice, high electric usually choose data registers, lowelectric usually choose instruction register.5 feet: R/W signal lines for reading and writing, high electric usually are readoperation, low electricity at ordinary times for write operation. When the RS andthe R/W commonFor low electricity can be written instructions at ordinary times, or displaysaddress, when RS for low level R/W high power for at ordinary times can read busysignal, and whenRS for high level R/W for low electricity data can be written at ordinary times.6 feet: E end to make can end, when E is driven by high level jump into lowelectricity at ordinary times, LCD module executive order.7 to 14 feet: D0 ~ D7 for eight two-way data cables.15 feet: back light positive.16 feet: back light negative.

14: control command table1602 LCD module of reading and writing, and the screen and light mark operationoperations are through the instructions of programming realize. (note: 1 for highLevel, 0 for low level)Instruction 1: clear display, instruction code 01 H, the cursor is reset to address00 H position.Instruction 2: the cursor reset, the cursor to return to address 00 H.Instruction 3: the cursor and display mode I/D: cursor movement direction, highlevel move to the right, low level moves left S: all on the screen

Is the text moves left or move to the right. High level said effective, low levelis invalid.Instruction 4: display switch control. D: control overall display of open and shut,high level says open display, low level said shut showAnd C: the open and close to control a cursor, high level said the cursor, lowlevel said no cursor B: whether to control a cursor flashing,High level flashing, low level do not twinkle.Command 5: the cursor or display shift S/C: high electricity at ordinary timesof mobile displays text, low electric usually move the cursor.Command 6: function setting command DL: high electricity at ordinary times forfour bus, low electricity at ordinary times for eight bus N: low electricity atordinary times for single lineDisplay, high electric usually pair on display F: low electricity at ordinary timesdisplay 5 x7 of dot matrix characters, high electric usually display 5 x10 of dotmatrix characters.Command 7: character generator RAM address Settings.Instructions 8: DDRAM address Settings.Instructions 9: read the busy signal and the cursor address BF: a sign for busy,high level said busy, this time the module can"t receive commands orThe data, if for low level is not busy said.Directive 10: write data.11 instructions: read data.

1602 LCD RAM address mapping and standard word stock listLiquid crystal display module is a slow display device, so in the execution eachinstruction before must affirm module mark is busy low electricityFlat, said were not busy, otherwise this instruction failure. To display character

before display character input address, also is tell module inWhere display character.6. 1602 internal display address (pictured)For example the second line the first character address is 40 H, so whether written40 H can directly to the cursor positioning in the second lineThe first character position? So no, because that address to request when the topbits D7 constant for high level 1 soThe actual writing data should be 01000000 B (40 H) + 10000000 B (80 H) = 11000000B (C0H).In the LCD module in the initialization of first set its display mode, in LCD moduledisplay characters is automatic when the cursor move to the right,Without human intervention. Every time before you judge input instructions LCDmodule are in favor of the state.1602 LCD module of the internal character happen storage

Directory  Summarize  Shape dimension  Module mainly hardware description  The external interface module  Command instructions  Ceading and writing operation sequence  Software initialization...

Summarize （1602A QAPASS ）is an industrial character type LCD, can also shows that 16 x02 namely 32 characters. (16 column 2 line) Second:module size (pictured) Three:pin interface specifications table Numbers symbols pin pin that Numbers symbols that Numbers symbols Pin that...

1 foot: for to power VSS. 2 feet: VDD take 5 V is power. 3 feet: VL for LCD contrast the adjustment, and then when the power is the weakest contrast, grounded contrast the highest, and the contrast Through high can produce the "ghost", when used, can pass...

4. 1602 LCD instructions in time sequence that 1602 LCD module internal controller of article 11 control instruction, as the chart shows: Numb instructions Clear display Cursor to return to Buy input mode Display the on/off control The cursor or character shift Buy function Buy character CunZhuQi...

4: control command table 1602 LCD module of reading and writing, and the screen and light mark operation operations are through the instructions of programming realize. (note: 1 for high Level, 0 for low level) Instruction 1: clear display, instruction code 01 H, the cursor is reset to address 00 H position. Instruction 2: the cursor reset, the cursor to return to address 00 H.

The basic operation sequence table Graph: read operation sequence Graph: write operation sequence 1602 LCD RAM address mapping and standard word stock list. Liquid crystal display module is a slow display device, so in the execution eachinstruction before must affirm module mark is busy low electricity Flat, said were not busy, otherwise this instruction failure.

LCD display for replacing a broken one or for creating something new. This LCD display can be used easily with Arduino, Raspberry Pi, Intel Edison or any other embedded system you want to work with.

Due to the ancient LCD controller technology made by Hitachi, the board controller requires 5VDC operating voltage. In order to easily use this display with say Raspberry Pi (3,3VDC) you need to hack this display a bit. In order to make it work with lower operating voltage, add a 8pin voltage converter such as ICL7660 (or similar) onto the space indicated with label U3. Then populate C1 and C2 with 10µF SMD capacitors and remove J1 solder bridge. To finalize the job enable the voltage converter by soldering a solder bridge across the J3 contact pins. You have now an LCD display capable of operating with lover operating voltage.

LCD 16X2 Blue Backlight provides a 16 characterX2 line LCD with I2C interface for easy control by a uC. 16X2 Blue Backlight LCD-1602 IIC I2C 16-Character 2-Lineare extremely common and is a fast way to have your project show status messages.

LCD 16×2 is composed of a 16 character x 2 line LCD display with a blue backlight and white characters. Each of the characters are composed of a 5 x 8 dot matrix for good character representation.