SPLC780D字符点阵液晶显示模块

Features 一Characters: 20×2 Lines 一LCD Mode: STN 一Controller IC: SPLC780D or Equivalent 一Driving Method: 1/16 Duty; 1/5Bias 一 Viewing Angie: 6 O’clock direction 一 6800 serial 8-Bit/4-Bit MPU Interface 一 Backlight: LED 一Operating Temperature Range: -20 to 70℃; 一Storage Temperature Range : -30 to 80℃;

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1. FUNCTIONS & FEATURES

Features

一 Characters: 20×2 Lines

一 LCD Mode: STN

一 Controller IC: SPLC780D or Equivalent

一 Driving Method: 1/16 Duty; 1/5Bias 一 Viewing Angie: 6 O’clock direction 一 6800 serial 8-Bit/4-Bit MPU Interface 一 Backlight: LED

一 Operating Temperature Range: -20 to 70℃;

一 Storage Temperature Range : -30 to 80℃;

2. MECHANICAL SPECIFICATIONS

ITEM	SPECIFICATIONS	UNIT
Module Size	116.0L×35.0W×11.8（max）H	mm
View Area	82.6×18.4	mm
Number of Character	20×2 Lines	—
Character Size	3.20×5.55	mm
Character Pitch	3.70×5.95	mm

3. EXTERNAL DIMENSIONS

4. BLOCK DIAGRAM

5. POWER SUPPLY

VDD-V0=Operating voltage for LCD

6. PIN DESCRIPTION

ITEM	SYMBOL	LEVEL	FUNCTION
1	VSS	0V	Power Ground
2	VDD	5.0V	Power Supply For Logic
3	V0	-	Contrast Adjust
4	RS	H/L	H：Data L：Command
5	R/W	H/L	H：Read L：Write
6	E	H，H->L	Enable Signal
7	DB0
～	～	H/L	Data Bus
14	DB7
15	LEDA	5.0V	Power Supply For LED Backlight
16	LEDK	0V	Power Supply For LED Backlight

7. MAXIMUM ABSOLUTE LIMIT (T=25°C)

Items	Symbol	Min	Max	Unit	Condition
Supply Voltage	Vdd	0	5.0	V	Vss=0V
Input Voltage	Vin	0	Vdd	V	Vss=0V
Operating Temperature	Top	-20	70	℃	No Condensation
Storage Temperature	Tst	-30	80	℃	No Condensation

Note: Voltage greater than above may damage the module

All voltages are specified relative to VSS=0V

8. ELECTRICAL CHARACTERISTICS

8.1 DC Characteristics (VDD=+5V, VSS=0V, Ta=-0~+50°C)

Items	Symbol	Min	TYP	Max	Unit	Condition
Operating Voltage	Vdd	4.7V	5.0	5.3	V	Vdd
Supply Current	Idd	—	1.5	3.5	mA	except LED backlight
Input High Voltage	Vin	0.8×Vdd	—	Vdd	V	RS,RW,E,DB0-DB7
Input Low Voltage	Vil	Vss	—	0.5	V	RS,RW,E,DB0-DB7
Output High Voltage	Voh	0.7×Vdd	—	Vdd	V	Ioh=-0.1mA,DB0-DB7
Output Low Voltage	Vol	Vss	—	0.5	V	Iol=0.1mA,DB0-DB7
LCD Driving Voltage	Vlcd	4.6	4.8	5.0	V	Vdd-V0

8.2 AC Characteristics (VDD=+5V, VSS=0V, TTa=-20~75°)

Items	Symbol	Min	TYP	Max	Unit
E cycle time	tc	1500	—	—	nS
E high level width	tpw	175	—	—	nS
E rise time	tr	—	—	20	nS
E fall time	tf	—	—	20	nS
Address set-up time	tas	5	—	—	nS
Address hold time	tah	13	—	—	nS
Data set-up time	tdsw	50	—	—	nS
Data delay time	tddr	—	—	125	nS

Data hold time

—

MPU write timing

MPU read timing

9. FUNCTION SPECIFICATIONS

9.1. Basic Setting

To drive the LCD module corretly and provide normally display, please use the following setting:

一 N=1, 2-line display 一 F=0, 5×8 dots font 一 D=1, display on

Note:

一 These setting/commands should issue to the LCD module while start up.

一 See the Display Commands section for details.

9.2. Resetting The LCD Module

When turning on the VDD and VSS power supply, ute the reset routine automatically. It takes about 50ms. After the reset routine, the LCD module status will be as follow:

一 N=1, 2-line display

一 Display clear

一 DL=1, 8-bit interface

一 F=0, 5×8 dot character font

一 D=0, Display off 一 C=0, Cursor off 一 B=0, Blinking off

一 I/D=1, Increment by 1

一 S=0, No shift NOTE:

一 Reset routine could not generate the Basic Setting

9.3. Display Memory Map

There are two main memory-areas in the LCD module for display.

Character Generator RAM(CGRAM)

一 Display Data RAM(DDRAM)

9.3.1. Character Generator RAM(CGRAM)

Character Generator RAM is for storing the User-defined Characters(5×8 dots font). Totally 8 User-defined Characters(character code = 00h-07h) could be created.

The User-defined Character Codes are 00h and 07h. They could be called into DDRAM as

normal character.

9.3.2. Character code ROM

Please refer to SPLC780C datasheet.

9.4. Display Commands

NOTE:

Do not use any other commands not listed, or the system malfunction may result. For the details of rte display commands, please refer to SPLC780C datasheet.

10. DESIGN AND HANDING PRECAUTION

10.1. The LCD panel is made by glass. Any mechanical shock (eg. Dropping form high place) will damage the LCD module.Do not add excessive force on the surface of the display, which may cause the Display color change abnormally.

10.2. The polarizer on the LCD is easily get scratched. If possible, do not remove the LCD protective film until the last step of installation.

10.3. Never attempt to disassemble or rework the LCD module.

10.4. Only Clean the LCD with Isopropyl Alcohol or Ethyl Alcohol. Other solvents (eg. water) may damage the LCD.

10.5. When mounting the LCD module, make sure that it is free form twisting, warping and distortion.

10.6. Ensure to provide enough space(with cushion) between case and LCD panel to prevent external force adding on it, or it may cause damage to the LCD or degrade the display result

10.7. Only hold the LCD module by its side. Never hold LCD module by add force on the heat seal or TAB.

10.8. Never add force to component of the LCD module. It may cause invisible damage or degrade of the reliability.

10.9. LCD module could be easily damaged by static electricity. Be careful to maintain an optimum anti-static work environment to protect the LCD module.

10.10. When peeling of the protective film form LCD, static charge may cause abnormal display pattern. It is normal and will resume to normal in a short while.

10.11. Take care and prevent get hurt by the LCD panel edge.

10.12. Never operate the LCD module exceed the absolute maximum ratings.

10.13. Keep the signal line as short as possible to prevent noisy signal applying to LCD module.

10.14. Never apply signal to the LCD module without power supply.

10.15. IC chip (eg. TAB or COG) is sensitive to the light. Strong lighting environment could possibly cause malfunction. Light sealing structure casing is recommend.

10.16. LCD module reliability may be reduced by temperature shock.

10.17. When storing the LCD module, avoid exposure to the direct sunlight, high humidity, high temperature or low temperature. They may damage or degrade the LCD module

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