The PICER-LCD-XY1 is an educational electronics kit that allows you to control LCD directly from PIC (PIC16F690) Micro-controller.

The PICER-LCD-XY1, is the fun and easy way to write to Liquid Crystal Display (LCD).

One can program the PIC16F690 Micro-controller Flash memory using his/her PICKIT 2 (sold directly from Microchip Corporation) directly from a personal computer (PC) via our adaptor board the PK2-A3 (sold separately).

The board utilizes the PIC16F690 IC (20 pin DIP configuration). The board also includes connector (J1) that allows you to connect 4 10-bit ADC lines and a few I/Os. The J2 connector is for those who desire to connect back light LCD.

Do It Yourself (DIY) build a software driven micro-processor base LCD kit, and have a blast!

The Kit shown above without the LCD (sold separately)

The Kit shown above (front view) connected to 1 line 16 Characters LCD (sold separately)

The Kit shown above (side view) connected to 1 line 16 Characters LCD, and PICKIT^TM 2**.

PICKIT-2, USB cable, connectors and LCD are sold separately

** PICKIT 2 is register Tradmark of Microchip Corp.

Kit Includes:

• PIC 16F690                         1pc.

• 78L05  Voltage regulator       1pc.

• Diode 1N4007                      1pc.

• 4.7uf/25v          Capacitor     1pc.

• 0.1uf/50v          Capacitor     2pc.

• 10K                  Trimmer        1pc.

• PCB                                    1pc.

Schematic:  

Down load your code directly using your PICKIT2 via our PK2-AD3 adepter sold separately

Character Type Liquid Crystal Display (LCD) Modules Features

1.        5x8 dot matrix

2.        Built-in controller (KS0066 or equivalent)

3.        +5V or +3.3V power supply

4.        1/16 duty cycle

5.        8-bit parallel interface

LCD Kit Interface pin Connections information

LCD 16 pins (14 I/O + 2 for Back-light)

Back-light

J4 & J5  I/O or Power indication or LED control:

*** For power indication G short to X

LCD  Character Address Code

Code Instruction Set for Character Type LCD Modules

 

Instruction	Code										Description
	RS	R/W	DB7	DB6	DB5	DB4	DB3	DB2	DB1	DB0
Clear display	0	0	0	0	0	0	0	0	0	1	Clear display and return the cursor to home position (Address 0). Sets I/D=1 of Entry Mode
Return home	0	0	0	0	0	0	0	0	1	*	Return the cursor to the home position (Address 0). Also return the display being shifted to the original position. DD RAM contents remain unchanged. Set DD RAM addresses to zero.
Entry mode set	0	0	0	0	0	0	0	0	I/D	S	Set the cursor move direction and specifies or not to shift the display. These operations are performed during data write and read of DD RAM/CG RAM. For normal operation, set S to 0.
Display On/Off control	0	0	0	0	0	0	1	D	C	B	Set On/Off all display (D), cursor On/Off (C), and blink of cursor position character (B)
Cursor of display shift	0	0	0	0	0	1	S/C	R/L	*	*	Move the cursor and shift the display without changing DD RAM contents
Function set	0	0	0	0	1	DL	N	F	*	*	Set interface data length (DL), number of display lines (N) and character font (F)
Set the CG RAM address	0	0	0	1	MSB          ACG					LSB	Set the CG RAM address. CG RAM data is sent and recievd after this setting
Set the DD RAM address	0	0	1	MSB                 ADD						LSB	Set the DD RAM address. DD RAM data is sent and recievd after this setting
Read busy flag & address	0	1		MSB                 AC						LSB	Read Busy flag (BF) indicating internal operation is being performed and read address counter contents
Write data to CG or DD RAM	1	0	MSB                                                LSB								Write data into DD RAM or CG RAM
Read data from CG or DD RAM	1	1	MSB                                                LSB								Read data from DD RAM or CG RAM
S=1 : accompanies display shift when data is written for normal operation set to 0											DD RAM : Display Data RAM
I/D = 1 : Increment						DL = 1 : 8 bits					CG RAM : Character Generator RAM
I/D = 0: Decrement						DL = 0: 4 bits					ACG : CG RAM Address
S/C = 1 : Display shift						N = 1 : 2 (1) line					ADD : DD RAM Address corresponds to cursor address
S/C = 0: Cursor move						N = 0 : 1 line					AC : Address Counter used for both DD and CG RAM addresses
R/L = 1 : Shift to the right						F = 1 : 5x10 dots					B : 1 = On, 0= Off (Blinking cursor)
R/L = 0: Shift to the left						F = 0: 5x7 dots					C : 1 = On, 0= Off (Cursor)
BF = 1 : Internally operating											D : 1 = On, 0= Off (Display)
BF = 0: Can accept instruction											*= Don't care

* The module automatically performed initialization when powered on (using internal reset circuit). The following instructions are executed during initialization:

Power On Timing Diagram

Note: When the above power supply condition is not satisfied, the internal reset circuitry does not operate correctly. In this case perform the needed initialization by sending function set instructions thrice from MPU after turning the power on. For example, to designate an 8-bit data length, set the following instructions thrice.

Character Type LCD Modules Initialization For 8 bit data interfacing

Power On

Wait for 15ms or more after Vcc rises to 4.5v Please be advised that BF cannot be checked at this time

Wait for 4.1ms or more Please be advised that BF cannot be checked at this time

Wait for 100us or more

BF cannot be checked at this time, check for not busy

check for not busy

check for not busy

check for not busy

End of Initialization

Character Type LCD Modules Initialization For 4 bit data interfacing

Power On

Wait for 15ms or more after Vcc rises to 4.5v. Please be advised that BF cannot be checked at this time

Wait for 4.1ms or more. Please be advised that BF cannot be

Wait for 100us or more Please be advised that BF cannot be

check for not busy

check for not busy

check for not busy

check for not busy

check for not busy

Check for not busy

End of Initialization

Typical Character Type LCD Modules Block Diagrams

16x1 DMM, 1/16 MUX

16x2 DMM, 1/16 MUX

16x4 DMM, 1/16 MUX

20x2 DMM, 1/16 MUX

20x4 DMM, 1/16 MUX

24x2 DMM, 1/16 MUX

40x4 DMM, 1/16 MUX

Software Tips:  

1. W holds the character to move to Port C (The display data lines) DB0 to DB7 (8 Bits)

An example move 'A' --> W --> PORT C

                   MOVLW        81H              ;'A' --> W

                   MOVWF       PORTC           ;W --> PORT C

See below table for all the ASCII characters:

CA                MOVLW       81H               ;A

SA                MOVLW       91H               ;a

CB                MOVLW       41H               ;B

SB                MOVLW       51H               ;b 

CC                MOVLW       0C1H             ;C

SC                MOVLW       0D1H             ;c

CD                MOVLW       05H               ;D

SD                MOVLW       15H               ;d

CE                MOVLW       85H               ;E

SE                MOVLW       95H               ;e

CF                MOVLW       45H               ;F

SF                MOVLW       55H               ;f

CG                MOVLW       0C5H             ;G

SG                MOVLW       0D5H             ;g

CH                MOVLW       09H               ;H

SH                MOVLW       19H               ;h

CI                 MOVLW       89H               ;I

SI                 MOVLW       79H               ;i

CJ                 MOVLW       49H               ;J

SJ                 MOVLW       59H               ;j

CK                MOVLW       0C9H              ;K

SK                MOVLW       0D9H              ;k

CL                MOVLW       0DH                ;L

SL                MOVLW       1DH                ;l

CM                MOVLW       8DH               ;M

SM                MOVLW       9DH               ;m

CN                MOVLW       4DH               ;N

SN                MOVLW       5DH               ;n

CO                MOVLW       0CDH             ;O

SO                MOVLW       0DDH             ;o

CP                MOVLW       03H               ;P

SP                MOVLW       13H               ;p

CQ                MOVLW       83H               ;Q

SQ                MOVLW       93H               ;q

CR                MOVLW       43H               ;R

SR                MOVLW       53H               ;r

CS                MOVLW       0C3H             ;S

SS                MOVLW       0D3H             ;s

CT                MOVLW       07H               ;T

ST                MOVLW       17H               ;t

CU                MOVLW       87H               ;U

SU                MOVLW       97H               ;u

CV                MOVLW       47H               ;V

SV                MOVLW       57H               ;v

CW               MOVLW       0C7H             ;W

SW               MOVLW       0D7H             ;w

CX                MOVLW       0BH               ;X

SX                MOVLW       1BH               ;x

CY                MOVLW       8BH               ;Y

SY                MOVLW       9BH               ;y

CZ                MOVLW       4BH               ;Z

SZ                MOVLW       5BH               ;s

N0                MOVLW       12H               ;0

N1                MOVLW       92H               ;1

N2                MOVLW       52H               ;2

N3                MOVLW       0D2H             ;3

N4                MOVLW       16H               ;4

N5                MOVLW       96H               ;5

N6                MOVLW       56H               ;6

N7                MOVLW       0D6H             ;7

N8                MOVLW       1AH               ;8

N9                MOVLW       9AH               ;9

DOT              MOVLW       5CH               ;.

COMA            MOVLW       1CH               ;,

DEG              MOVLW       0EFH             ;Degree

EQL               MOVLW       9EH               ;=

AT                MOVLW       01H               ;@

NUM              MOVLW       0D0H             ;#

SPC              MOVLW       30H               ;Space

Note: LCD sold separately!

Description and SKU#

Price

Picture

PIC to CHARACTER LCD kit

EID-K-PIC-LCD-XY1-ASM   Fully assembled

49.00

EID-K-PIC-LCD-XY1-KIT   Kit only

39.75

EID-K-PIC-LCD-XY1-PCB   PCB only

12.75

PICKIT2 to PICER-LCD-XY1 adaptor

EID-K-PIC-LCD-XY1-PK2-A3-PCB   PCB only

6.75

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