Dot Matrix LED Unit for Indoor/Outdoor Use LT1455M/LT1456M(Lamp Type)
s
Features
隆No.
of dots : 16!16dots
隆Outline
dimensions : 96.0!96.0mm
隆Dot
size : 酶5.0mm
隆Dot
pitch : 6.0mm
隆Radiation
color : Yellow-green+Red(High-luminosity)dichromatic type
隆Driving
method : 1/8 duty dynamic drive
LT1455M
LT1456M
s
Absolute Maximum Ratings
Parameter
Supply voltage for IC
Supply voltage for LED
Input voltage
Turn-on time
Operating temperature
Storage temperature
Power dissipation
Symbol
V
CC
V
LED
V
I
t
ON
T
opr
T
stg
P
Rating
-0.3 to +6.0
-0.3 to +5.5
-0.3 to Vcc+0.3
1
-10 to +65
-20 to +85
22
(Ta=25藲C)
s
Electrical Characteristics
Parameter
Supply voltage for IC
Supply voltage for LED
IC current dissipation
LED current dissipation
*1
(V
CC
=5V,V
LED
=5V,Ta=25藲C)
Unit
V
V
V
ms
藲C
藲C
W
s
Optical Characteristics
(V
CC=
5V,V
LED=
5V,Ta=25藲C)
Parameter
Symbol
TYP.
Unit
Viewing angle
50/40
藲
2胃
1
/
2
660
Red
nm
Peak emission wavelength
位p
565
Yellow-green
Each figure in the table is the one of LT1455M/LT1456M in sequence.
Symbol MIN. TYP. MAX. Unit
V
5.0
5.25
V
CC
4.75
V
5.0
5.25
4.5
V
LED
mA
15
40
------
I
CC
3.9
------
I
LED
A
3.5
------
------
3.5
V
IL
V
Signal input voltage
V
IH
------
------
1.5
V
I
IL
------
------
0.1
碌A(chǔ)
Signal input current
I
IH
------
------
0.12
mA
MHz
Clock frequency
f
CLK
3.0
------
------
Frame frequency
f
FR
125
200
400
Hz
*1 Under the condition that dichromatic all dots are lit.
s
Timing Chart
tsu
CLOCK
RDATA
GDATA
V0(n+1) data
RDATAout
GDATAout
td
D
LATCH
t=1/f osc
Internal
ENABLE
RENABLE
GENABLE
ADDRESS
(A0~A2)
ON
ON
ON
ON
ON
OFF
ON
ON
OFF
td(L-E)
s
Luminance
Luminance is classified into 2 ranks shown below.
(V
CC
=5V,V
LED
=5V,Ta=25藲C)
th
t
WCLK
V
D
(n+2) data
td(C-L)
td(L-C)
t
WL
Radiation color
Red
Yellow-green
Rank
1
450/700
330/700
2
550/1000
450/1000
Unit
cd/m
2
Each figure in the table is the one of LT1455M/LT1456M in sequence.
s
Terminal Functions
Symbol
V
LED
Power supply V
CC
(CN1) GND1
GND2
A0 to A2
RENABLE
GENABLE
Connector
RDATA
Input signal
(CN2) GDATA
LATCH
CLOCK
Function
Supply voltage for LED(+5V)
Supply voltage for IC(+5V)
Ground for IC
Ground for LED
Address specification signal for column driver
Controls ON/OFF of each color of LED
(H: LED OFF)
Serial data input for red(H=ON, L=OFF)
Shift from up to down in the unit
H
D16
/H
D31
/H
D0
/H
D15
Serial data input for yellow-green(H=ON, L=OFF)
Shift from up to down in the unit
H
D16
/H
D31
/H
D0
/H
D15
Latch signal of display data H: Serial data is converted
to parallel data.L: Contents are latched.
Clock signal for data transmission in the shift-
register.(L/H: serial data is shifted.)
V
D
(n) data ON
td(E-L)
V
D
(n+1) data ON
t
WENA
V
D(
n)
td(E-A)
VD(n+1)
td(A-E)
s
Block Diagram
Luminance adjustment circuit
VR1
VR2
Input/output circuit
473
331
HC367
OSC
MONO-MULTI
HC123
OUT
A0
A1
A2
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
A0
A1
A2
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
3 TO 8 DECODER
PNP DRIVER
V
D0
16BIT
SHIFT-REGISTER
LATCH AND DRIVER
HD16
16!16 DOT
LED
HD31
HD16
HD15
HD0
Output signal
Input signal generated through 32-bit shift register
(CN3) GDATA
LATCH
Buffered input signal
GENABLE Buffered input signal
Buffered input signal
CLOCK
GND1
Ground for signal (Connected to ground for IC)
Each signal is used as input signal for next unit.
* As for the terminal number, refer to the outline dimensions
(Notice)
RDATA
Input signal generated through 32-bit shift register
16BIT
SHIFT-REGISTER
LATCH AND DRIVER
DICHROMATIC
MATRIX
HD31
HD15
devices
catalogs, data books, etc. Contact SHARP
66
(Internet)
隆Data
forshown inoptoelectronic/power device is provided for in order to obtain the latest device specification sheets before using any SHARP device.
sharp's
internet.(Address http://www.sharp.co.jp/ecg/)
隆In
the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP
16BIT
SHIFT-REGISTER
LATCH AND DRIVER
16BIT
SHIFT-REGISTER
LATCH AND DRIVER
Ground for signal (Connected to ground for IC)
GND1
A0 to A2 Buffered input signal
RENABLE Buffered input signal
V
D15
HD0
1
2
