Dot Matrix LED Unit for Indoor Use LT1461ED(Chip On Board Type)
s
Features
隆No.
of dots : 16!16dots
隆Outline
dimensions : 64!64mm
隆Dot
size : 酶2.8mm
隆Dot
pitch : 4.0mm
隆Radiation
color : Yellow-green+Red(dichromatic type)
隆Driving
method : 1/16 duty dynamic drive
LT1461ED
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
6.0
6.0
-0.3 to +5.5
1
-10 to +45
-20 to +70
13
(Ta=25藲C)
s
Electrical Characteristics
Parameter
Supply voltage for IC
Supply voltage for LED
IC current dissipation
*1
LED current dissipation
*1
(V
CC
=5V,V
LED
=5V,Ta=25藲C)
Unit
V
V
V
ms
藲C
藲C
W
Symbol
MIN. TYP. MAX. Unit
V
5.25
5.0
V
CC
4.75
------
V
5.25
5.0
V
LED
------
------
mA
50
I
CC
------
------
A
1.8
I
LED
------
------
V
3.5
V
IH
Input voltage
------
------
V
1.5
V
IL
------
------
碌A(chǔ)
0.1
I
IH
Input current
------
------
0.12
I
IL
mA
------
------
Clock frequency
4
f
CLK
MH
Z
Frame frequency
------
625
80
f
FR
H
Z
*1 Under the condition that dichromatic all dots are lit.
s
Optical Characteristics
Parameter
Red
Yellow-green
Viewing angle
Red
Peak emission wavelength
Yellow-green
Luminance
Symbol
L
V
2胃
1
/
2
位p
(V
CC
=5V,V
LED
=5V,Ta=25藲C)
TYP
90
90
80
635
565
Unit
cd/m
藲
nm
2
s
Timing Chart
tsu
CLOCK
RDATA
GDATA
RDATAout
GDATAout
LATCH
th
t
WCLK
HD(n+1)DATA
tdD
td(C-L)
tWL
HD(n+2)DATA
td(L-C)
s
Terminal Functions
Function
Connector Symbol
Supply voltage for LED (+5V)
V
LED
Power V
CC
Supply voltage for IC (+5V)
supply
Ground for IC
(CN1) GND1
Ground for LED
GND2
A0 to A3 Address specification signal for row driver
RDATA Serial data input for red (H=ON, L=OFF)
GDATA Serial data input for yellow-green (H=ON, L=OFF)
Input
signal
(CN2)
LATCH
Latch signal of display data. L: Contents are latched.
ENABLE
ADDRESS
(A0~A3)
HD(n)DATA ON
td(E-L)
HD(n)
td(E-A)
td(L-A)
OFF
tEN
HD(n+1)DATA ON
td(L-E)
HD(n+1)
td(A-E)
tOFF
s
Block Diagram
Vcc
47K
ENABLE Controls ON/OFF of LED (H: LED OFF)
CLOCK
CN2
A0
A1
A2
A3
RDATA
GDATA
CLK
LATCH
ENABLE
HC367
Input circuit
Clock signal for data transmission in the shift-
register. (L隆H: serial data is shifted.)
Ground for signal. (Connected to ground for IC)
GND1
A0 to A3 Buffered input signal
Input signal generated through 16-bit shift register
RDATA
or buffer
Output GDATA Input signal generated through 16-bit shift register
signal
or buffer
(CN3) LATCH Buffered input signal
ENABLE Buffered input signal
CLOCK Buffered input signal
Ground for signal. (Connected to ground for IC)
GND1
Each signal is used as input signal for next unit.
* As for the terminal number, refer to the outline dimensions.
CN3
A0
A1
A2
A3
RDATA
GDATA
CLK
LATCH
ENABLE
Buffer
Decoder
Driver
Shiftresister
Latch(G)
Shiftresister
Latch(R)
Driver
LED
Matrix
VR1
VR2
G.ADJ
G.ADJ
Mono-Multi
OSC
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
devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
(Internet)
隆Data
for sharp's optoelectronic/power device is provided for internet.(Address http://www.sharp.co.jp/ecg/)
(Notice)
Driver
15
1
2
