LT1455M Datasheet, PDF (1/2 Pages) Sharp Electrionic Components – Dot Matrix LED Unit for Indoor/Outdoor Use(Lamp Type)

Dot Matrix LED Unit for Indoor/Outdoor Use LT1455M/LT1456M(Lamp Type)
s Features
¡No. of dots : 16!16dots
¡Outline dimensions : 96.0!96.0mm
¡Dot size : ø5.0mm
¡Dot pitch : 6.0mm
¡Radiation color : Yellow-green+Red(High-luminosity)dichromatic type
¡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
VCC
VLED
VI
tON
Topr
Tstg
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˚C)
Unit
V
V
V
ms
˚C
˚C
W
s Optical Characteristics
(VCC=5V,VLED=5V,Ta=25˚C)
Parameter
Symbol
TYP.
Unit
Viewing angle
2θ¹/2
50/40
˚
Peak
emission
wavelength
Red
Yellow-green
λp
660
565
nm
Each figure in the table is the one of LT1455M/LT1456M in sequence.
s Luminance
Luminance is classified into 2 ranks shown below.
(VCC=5V,VLED=5V,Ta=25˚C)
Radiation color
Rank
1
2
Unit
Red
Yellow-green
450/700
330/700
550/1000
450/1000
cd/m²
Each figure in the table is the one of LT1455M/LT1456M in sequence.
s Terminal Functions
Connector Symbol
Function
VLED
Supply voltage for LED(+5V)
Power supply ^VCC
Supply voltage for IC(+5V)
(CN1) GND1 Ground for IC
GND2 Ground for LED
A0 to A2 Address specification signal for column driver
RENABLE Controls ON/OFF of each color of LED
GENABLE (H: LED OFF)
RDATA
Serial data input for red(H=ON, L=OFF)
Shift from up to down in the unit
HD16/HD31/HD0/HD15
Input signal
(CN2) ^GDATA
Serial data input for yellow-green(H=ON, L=OFF)
Shift from up to down in the unit
HD16/HD31/HD0/HD15
LATCH
Latch signal of display data H: Serial data is converted
to parallel data.L: Contents are latched.
s Electrical Characteristics
(VCC=5V,VLED=5V,Ta=25˚C)
Parameter
Symbol MIN. TYP.
Supply voltage for IC
VCC
4.75 5.0
Supply voltage for LED
VLED
4.5 5.0
IC current dissipation
ICC
------ 15
LED current dissipation^*1
ILED
------ 3.5
Signal input voltage
VIL
3.5 ------
VIH
------ ------
Signal input current
IIL
------ ------
IIH
------ ------
Clock frequency
fCLK
------ ------
Frame frequency
fFR
125 200
*1 Under the condition that dichromatic all dots are lit.
MAX.
5.25
5.25
40
3.9
------
1.5
0.1
0.12
3.0
400
Unit
V
V
mA
A
V
V
µA
mA
MHz
Hz
s Timing Chart
tsu th
t WCLK
CLOCK
RDATA
GDATA
RDATAout
GDATAout
V0(n+1) data
tdD
td(C-L) td(L-C)
tWL
VD(n+2) data
LATCH
t=1/f osc
Internal
ENABLE ON ON ON ON
RENABLE
GENABLE
ADDRESS
(A0~A2)
VD(n) data ON
td(E-L)
VD(n)
td(E-A)
ON ON ON
OFF
VD(n+1) data ON
td(L-E)
VD(n+1)
td(A-E)
OFF
tWENA
s Block Diagram
Luminance adjustment circuit
VR1
VR2
OSC
MONO-MULTI
HC123
A0
A1
A2
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
Input/output circuit
473 331
HC367
OUT
A0
A1
A2
RENABLE
RDATA
GDATA
LATCH
GENABLE
CLOCK
CLOCK
Clock signal for data transmission in the shift-
register.(L/H: serial data is shifted.)
GND1 Ground for signal (Connected to ground for IC)
A0 to A2 Buffered input signal
RENABLE Buffered input signal
RDATA Input signal generated through 32-bit shift register
Output signal
(CN3) GDATA Input signal generated through 32-bit shift register
LATCH Buffered input signal
GENABLE Buffered input signal
CLOCK Buffered input signal
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
3 TO 8 DECODER
PNP DRIVER
VD0
VD15
HD16
HD0
16!16 DOT
HD31
HD16
LED
HD15
HD0
DICHROMATIC
MATRIX
HD31
HD15
66 (Notice) ¡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) ¡Data for sharp's optoelectronic/power device is provided for internet.(Address http://www.sharp.co.jp/ecg/)