Sharp LT1550ED Datasheet

t

1/ f

td(A-E)

td(L-C)

V

D(n+2) data

tsu th

td(E-A)

td(L-A)

td(C-L)

VD(n+1) data

t

WENA

t

dD

t WL

WCLK

DATA(OUT)

R&G

LATCH

DATA

R&G

CLOCK

ENABLE

V

D(n) data ON

V

D(n)

ADDRESS

V

D(n+1)

(A0 to A3)

OFF

ENA

V

D(n+1) data ON

OFF

Dot Matrix LED Unit for Indoor Use LT1550ED(Chip Type)

Parameter

Supply voltage for IC V

CC -0.3 to +5.5 V

(Ta=25˚C)

*1 25% or less of lighting

Symbol Rating

Unit

VLED -0.3 to +4.5 V

V

1 -0.3 to Vcc+0.3 V

t

ON 1 ms

T

opr -10 to +60

*1

˚C

T

stg -20 to +70 ˚C

P 20 W

Supply voltage for LED
Input voltage
Turn-on time
Operating temperature
Storage temperature
Power dissipation

Parameter

Red

Yellow-green

Red

Yellow-green

120

cd/m

2

Symbol TYP.

Unit

Lv

180
120 ˚

2θ

1

/

2

635

nm

λp

565

Luminance

Viewing angle

Peak emission wavelength

(VCC=5V,VLED=4V,Ta=25˚C)

Connector

V

LED

VCC

Power
supply
(CN1)

Input
signal
(CN2)

Output

signal

(CN3)

GND
A0 to A3

RDATA

GDATA

LATCH

ENABLE

CLOCK

GND
A0 to A3

RDATA

GDATA
LATCH

ENABLE
CLOCK
GND

Supply voltage for LED (+4V)
Supply voltage for IC (+5V)
Ground
Address specification signal for row driver

Serial data input for red (H=ON, L=OFF)

Serial data input for yellow-green (H=ON, L=OFF)

Latch signal of display data. H: Serial data is
converted to parallel data. L: Contents are latched.

Controls ON/OFF of LED (H: LED OFF)

Clock signal for data transmission in the
shift-register. (L→H: serial data is shifted.)

Ground for signal
Buffered input signal
Input signal generated through 32-bit shift register
or buffer
Input signal generated through 32-bit shift register
or buffer
Buffered input signal
Buffered input signal
Buffered input signal
Ground for signal

Symbol Function

Each signal is used as input signal for next unit.
* As for the terminal number, refer to the outline dimensions.

AND LUMINANCE ADJUSTMENT CIRCUIT

AND LUMINANCE ADJUSTMENT CIRCUIT

Pch FET DRIVER

DICHROMATIC

16✕16DOT✕2

LED MATRIX

32BIT

32BIT

Input/output circuit

HC367

331

473

A0
A1
A2

RDATA
GDATA
LATCH

CLOCK

IN

A3

ENABLE

OUT

4 TO 16 DECODER

SHIFT-REGISTER, LATCH, DRIVER

SHIFT-REGISTER, LATCH, DRIVER

A0
A1
A2

RDATA
GDATA
LATCH

CLOCK

A3

ENABLE

■ Features

¡No. of dots : 16✕32dots
¡Outline dimensions : 64.0✕128.0mm
¡Dot size : 3.0✕3.0mm
¡Dot pitch : 4.0mm
¡Radiation color : Yellow-green+Red(dichromatic type)
¡Driving method : 1/16 duty dynamic drive

LT1550ED

■ Absolute Maximum Ratings

■ Optical Characteristics

■ Terminal Functions

■ Electrical Characteristics

Parameter
Supply voltage for IC
Supply voltage for LED

IC current dissipation
LED current dissipation

Input voltage

Input current
Clock frequency

Frame frequency

Symbol MIN. TYP. MAX.

VCC

*1

VLED
ICC

*1

ILED
VIH
VIL
IIH
IIL
fCLK
fFR

(VCC=5V,VLED=4V,Ta=25˚C)

4.75

3.75

------

140

------

3.5

------

------

------

------

------

------

------

------

------

70

250

*1 Under the condition that dichromatic all dots are lit.

■ Timing Chart

■ Block Diagram

5.0

4.0

3.8

5.25

4.25
200

4.2

------

1.5

0.1

0.12

10

1 000

Unit

V
V

mA

A
V
V

µA

mA

MH

HZ

Z

(Notice) ¡
(Internet) ¡Data for sharp's optoelectronic/power device is provided for internet.(Address http://www.sharp.co.jp/ecg/)

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.

161

±1

36.0

30.0

CN1

VV12
3
4

HD0

VD15

VD0

±0.2

HD15

(Output signal)

GND1

9

8

3

A
A
A
A
RDATA5

4

3

2

2

CN3

1

0
1

4

3

2

1

0
1
2
3

CN2

A
A
A
A
RDATA

LATCH7

10

CLOCK

LATCH7

9

810ENABLE

CLOCK
GND1

5

6.6

8 MIN

4-M3.0

1

13 MAX

6.6

±0.1

28.0

62.5

25.0

19 MAX

7 MIN

1010

2 MAX

23.2
1

CN3

VR1VR2

CN1

8MAX

28.0

23.5

4.5

28.0

±0.1

10.5

22.8

4

±0.1

4

28.0

1

6

32.0 MAX

6 GDATA GDATA

±0.2

Pin connection

(Power supply)

LED
CC

GND1
GND2

16.5

62.5

CN2

20 MAX

(Input signal)

19 MAX

P4.0✕15=60.0

63.8

P4.0X15=60.0

63.8

(Depth 6.0)

256-ø2.8

±0.1

ENABLE

128

64

8.2

HD0

VD0 VD31

Data shift direction

HD15

44.0 44.0

15.0

1

7

CN3

CN2

10

54

±0.25

22.0

10.0 19.7

1

10

OUT

IN

6-M3

Insert nut

(Effective screw depth 4.0)

19.7

VR1

VR2

1A0
2
3
4
5
6
7
8
9

10

A1
A2
A3
RDATA
GDATA
LATCH
ENABLE
CLOCK
GND

CN2(Input signal)

Pin No.

Name

Pin connection

1A0
2
3
4
5
6
7
8
9

10

A1
A2
A3
RDATA
GDATA
LATCH
ENABLE
CLOCK
GND

Pin No.

Name

CN3(Output signal)

1 VLED
2
3
4
5
6

VLED
VLED
VCC
GND
GND

CN1(Power supply)

Pin No.

Name

7 GND

512-3❏ chip LED

CN1

1

-0.8

+0

-0.5

+0

110

±0.25

4

LT1550ED