Document
Specification For
LCD Module LH2040-1
LH2040-1 LCD Module Specification Ver1.0 Total 6 pages
1
LH2040-1 Character Dot Matrix LCD Module FEATURES
y Display Mode: TN, Positive (STN also available) y Display Formate: 20 Characters x 4 Lines y Input Data: 4-Bits or 8-Bits interface available y Display Font : 5 x 8 Dots`
y Power Supply : Single Power Supply (5V 5%)
y Driving Scheme : 1/16Duty,1/5Bias
ABSOLUTE MAXIMUM
Item
Symbol
Power Supply for Logic
Vdd-Vss
Power supply for LCD Drive Vdd-Vo
Input Voltage
Vi
Operating Temperature
Ta
Storage Temperature
Tstg
Min. 0 0
Vss -10
-20
Max. +7.0 13.5 Vdd +60
+70
Unit V V V
ELECTRICAL CHARACTERISTICS
(Ta=25 ;Vdd=5.0V 5%,otherwise specified)
Item
Symbol Test Condition
Power Supply for Logic Vdd
--
Input “high” voltage
Vih
--
Input “low” voltage
Vil
--
Output “high” voltage
Voh
-Ioh=0.2mA
Output “low” voltage
Vol
Iol=1.2mA
Power supply current
Idd
Vdd=5.0v
Min. Typ. Max. 4.5 5.0 5.5 2.2 -- Vdd -0.3 -- 0.6 2.4 -- --- -- 0.4 -- 1.0 3.0
Unit V V V V V mA
MECHANICAL PARAMETERS
Item
Description
Frame Dimension
98.0 x 60.0 x 11.0
View Dimension
76.0 x 25.2
Unit mm mm
LH2040-1 LCD Module Specification Ver1.0 Total 6 pages
2
PIN ASSIGNMENT
No. Symbol Level
1 Vss
--
2 Vdd
--
3 V0
--
4 RS H/L
5 R/W H/L
6 E H,H-L
7 DB0 H/L
8 DB1 H/L
9 DB2 H/L
10 DB3
H/L
11 DB4
H/L
12 DB5
H/L
13 DB6
H/L
14 DB7
H/L
15 A
16 K
Function
0V
+5V for LCD
Power Supply
Register Select
H:Data Input L:Instruction Input
H--Read L--Write
Enable Signal
Data bus used in 8 bit transfer
Data bus for both 4 and 8 bit transfer
+5V GND
SYSTEM BLOCK DIAGRAM
DB7-DB0 E
R/W RS V0 Vdd Vss
Dot Matrix LCD
Controller
16 Com
40 seg
4
LCD PANEL
40 40 40 seg seg seg Segment Segment Segment Driver 4 Driver 4 Driver
40 seg
Segment 4 Driver
LH2040-1 LCD Module Specification Ver1.0 Total 6 pages
3
AC characteristics (Vdd=5V 10%,Vss=0V Ta=25 )
Write mode(writing data from Micom to KS0066)
Characteristic
Symbol Min. Typ. Max.
E cycle time
Tc 500 -- --
E rise time
Tr -- -- 25
E fall time
Tf -- -- 25
E pulse width (High,Low) R/W and RS set-up time
Tw Tsu1
220 -- -40 -- --
R/W and RS hold time Data set-up time
Th1 Tsu2
10 -- -60 -- --
Data hold time
Th2 10 -- --
Unit
ns ns ns ns ns ns ns ns
Test pin
E E E E R/W,RS R/W,RS DB0~DB7 DB0~DB7
Timing Chart
LH2040-1 LCD Module Specification Ver1.0 Total 6 pages
4
CONTROL and DISPLAY COMMAND
Command Display Clear
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 LL LLLLLLLH
Remark
Return Home
L L L L L L L L H X cursor move to first digit
Entry Mode Set
L L L L L L L H I/D SH I/D:set cursor move direction H-Increase L-Decrease SH:Specifies shift of display H-display is shifted L-Display is not shifted
Display On/Off L L L L L L H D C B D:Display(H-on,L-off)
C:Cursor(H-on,L-off)
B:Blinking(H-on,L-off)
Shift
L L L L L H S/C R/L X X SC:(H-Display shift,L-Cursir
move)
R/L:(H-Right shift,L-Left
shift)
Set Function
L L L L H DL N F X X DL:(H-8 bits interface,L-4
bits interface)
N:(H-2 line display,L-1 line
display)
F:(H-5 x 10 dots,L-5 x 7
dots)
Set CG RAM L L L H
CG RAM address
CG RAM Data is sent and
Address
(corresponds to address) received after this setting
Set DD RAM L L H
DD RAM address
DD RAM Data is sent and
Address
received after this setting
Read Busy
L H BF
Address Counter used for
BF:(H-Busy ,L-Ready)
Flag & Address
Both DD CG RAM address --Reads BF indication
internal operating is being
performed
--reads address counter
contents
Write Data
HL
Write Data
Write data into DD or CG
RAM
Read Data
HH
Read Data
Read data from DD or
CGRAM
LH2040-1 LCD Module Specification Ver1.0 Total 6 pages
5
ASSEMBLY DIAGRAM
TS2040-1 LCD Module Specification Total 6 pages
.