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LC0821-SFLYH6 Schematic ( PDF Datasheet ) - ETC

Teilenummer LC0821-SFLYH6
Beschreibung LCD Module
Hersteller ETC
Logo ETC Logo 




Gesamt 26 Seiten
LC0821-SFLYH6 Datasheet, Funktion
www.DataSheet4U.com
LCD Module Specification
Model: LC0821-SFLYH6
Table of Contents
COVER & CONTENTS ······················· 1
BASIC SPECIFICATIONS ····················· 2
ABSOLUTE MAXIMUM RATINGS ················· 3
ELECTRICAL CHARACTERISTICS ··············· 4
OPERATING PRINCIPLES & METHODES ··········· 7
MPU INTERFACE ························· 12
DISPLAY CONTROL INSTRUCTIONS ············· 16
ELECTROOPTICAL CHARACTERISTICS ·········· 21
DIMENSIONAL OUTLINE ····················· 23
LCD MODULE NUMBERING SYSTEM ············· 24
PRECAUTIONS FOR USE OF LCD MODULE ········· 25






LC0821-SFLYH6 Datasheet, Funktion
www.DataSheet4U.com
3.3 LED Backlight Characteristics (Ta=25)
LC0821-SFLYH6
-6-
Item
Symbol Condition
Forward Voltage
Vf
Forward Current
Peak Wave Length
If Vf=4.1V
λp If=60mA
Min.
3.9
--
--
Typ.
4.1
60
568
Max.
4.3
--
--
Unit
V
mA
nm
3.4 Power Supply
VDD
+5V VO
VR
10~20 k
VSS
LEDA
+5V
LEDK
Note: 5V voltage for the LED backlight should be supplied to Pin15 (LEDA) and Pin16
(LEDK) terminal of the interface, it should not be supplied to the Anode/Cathode terminal
of the LED backlight directly.

6 Page









LC0821-SFLYH6 pdf, datenblatt
www.DataSheet4U.com
LC0821-SFLYH6
- 12 -
5. MPU INTERFACE
5.1 General
(1). The LCD controller can be operated in either 4 or 8 bits mode. Instructions/Data are
written to the display using the signal timing characteristics found in section 3.2.
When operating in 4-bit mode, data is transferred in two 4-bit operations using data bits
DB4~DB7. DB0~DB3 are not used. When using 4-bit mode, data is transferred twice
before the instruction cycle is complete. The higher order 4 bits (contents of DB4~DB7
when interface data is 8 bits long) is transferred first, then the lower order 4 bits (contents
of DB0~DB3 when interface data is 8 bits long) is transferred. Check the busy flag after
4-bit data has been transferred twice (one instruction). A 4-bit two operation will then
transfer the busy flag and address counter data.
(2). When operating in 8-bit mode, data is transferred using the full 8-bit bus DB0~DB7.
5.2 Initialization
5.2.1 Initialization by the Internal Reset Circuit
The display can be initialized using the internal reset circuit when the power is turned on.
The following instructions are executed in initialization. The busy flag (BF) is kept in busy
state until initialization ends. The busy flag will go active 10ms after Vcc rises to 4.5V.
(1). Display Clear
(2). Function set:
DL = 1 : 8 bit interface operation
N = 0 : 1 - line display mode
F = 0 : 5 x 7 dots character font
(3). Display ON/OFF Control:
D = 0 : Display OFF
C = 0 : Cursor OFF
B = 0 : Blink OFF
(4). Entry Mode Set
I/D = 1 : +1 (Increment Mode)
SH = 0 : No Display Shift operation
If the internal power supply reset timing cannot be met (0.1ms<trcc<10ms), the internal
reset circuit will not operate normally and initialization will not be performed. In this case,
the display must be initialized by software.
5.2.2 Software Initialization
Although software initialization is not mandatory, it is recommended that this procedure
always be performed. When the internal power supply reset timing cannot be met, then
the display must be initialized using one of the following procedures.

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