Blue screen 1602A LCD LCD LCD Blue 5V White Font Backlight LCD1602

The 1602A chip is SPLC780 SPLC100 compatible with all the mainstream chips of all chips. The mainstream choice, the backlight is uniform, the display is good, the quality is good, the after -sales is guaranteed, the shipment is on time.Stable quality, genuine Taiwan.Welcome to your purchase.The basic information of 1602 below:

The following is the program of the letter "A" in the position of the first character of the second line of the LCD module: ORG 0000h

RS EQU P3.7; determine the connection method of specific hardware
RW EQU P3.6; determine the connection method of specific hardware
E -equ P3.5; determine the connection method of specific hardware

MOV P1,#00000001B; clear screen and cursor reset
Acall enable; call the writing command subroutine

MOV P1,#00111000B; Setting display mode: 8 -bit 2 lines 5x7 dot matrix
Acall enable; call the writing command subroutine

MOV P1,#00001111b; display, cursor, cursor, allowable flashing
Acall enable; call the writing command subroutine

MOV P1,#00000110B;
Acall enable; call the writing command subroutine

MOV P1,#0C0H; Write the start address (the first position of the second line of the second line)
Acall enable; call the writing command subroutine

MOV P1, # 01000001B; Code of letters A

Setb rs; rs = 1
Clr rw; rw = 0; ready to write data
Clr e; e = 0; execute the display command
Acall Delay; Judging whether the LCD module is busy?
Setb e; e = 1; display complete, program parking

Ajmp $

Enable:
Clr RS; subroutine written to the control command
CLR RW
CLR E
Acall delay
SetB E
Reto

Delay:
MOV P1,#0FFH; determine whether the liquid crystal display is busy
CLR RS
SetB RW
CLR E
NOP
SetB E
JB P1.7, Delay;
Reto

End

The program initializes the LCD module function at the beginning, and the display format is agreed.Note that the display character time marking is automatically shifted to the right, without manual intervention. Each input instruction is called to determine whether the LCD module is busy, then enter the address of the display position 0c0h, and finally enter the code 4 of the character A to display the code 41H 41HEssence

SMC1602A (16*2) Simulation port wiring method
Connection line diagram:
-------------------------------------------------
| LCM ----- 51 | LCM -------- 51 | LCM ---------------------------------------------------------------------------------------------------------------- 51 |
------------------------------------------------|
| DB0 ----- P1.0 | DB4 ---- P1.4 | RW ------ P2.0 |
| DB1 ----- P1.1 | DB5 ---- P1.5 | RS ------- P2.1 |
| DB2 ----- P1.2 | DB6 ---- P1.6 | E -------- P2.2 |
| DB3 ---- P1.3 | DB7 ----- P1.7 | VLCD connects 1K resistance to GND |
-------------------------------------------------

[Note: AT89S52 uses 12M crystals]
======================================================*/

#Define LCM_RW P2_0 // Definition pins
#Define LCM_RS P2_1
#Define LCM_E P2_2
#Define LCM_DATA P1
#Define busy 0x80 // Used to detect the busy logo in LCM state characters

#I nclude

void writeddatalcm (unsigned char WDLCM);
void WritCommandlcm (unsigned char wclcm, Buysc);
unsigned char readatalcm (void);
unsigned char readStatuslcm (void);
void lcminit (void);
Void DisplayOneChar (UNSIGNED Char X, UNSIGNED CHAR Y, UNSIGNED Char DData);
Void DisplayListChar (unsigned char x, unsigned char y, unsigned char code *ddata);
void delay5ms (void);
void delay400ms (void);

unsigned char code uctech [] = {"uctech