WS2812
Intelligent control LED
integrated light source
Features and Benefits
lllllllll

Control circuit and RGB chip are integrated in a package of 5050 components, form a complete control of pixel
point.
Built-in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion notaccumulate.
Built-in electric reset circuit and power lost reset circuit.
Each pixel of the three primary color can achieve 256 brightness display, completed 16777216 color full color
display, and scan frequency not less than 400Hz/s.
Cascading port transmission signal by single line.
Any two point the distance more than 5m transmission signal without any increase circuit.
When the refresh rate is 30fps, low speed model cascade number are not less than 512 points, high speed mode notless than1024 points.
Send data at speeds of 800Kbps.
The color of the light were highly consistent, cost-effective..

ApplicationsllFull-color module, Full color soft lights a lamp strip.
LED decorative lighting, Indoor/outdoor LED video irregular screen.

General description
WS2812 is a intelligent control LED light source that the control circuit and RGB chip are integrated ina package of 5050 components. It internal include intelligent digital port data latch and signal reshaping amplif
ication drive circuit. Also include a precision internal oscillator and a 12V voltage programmable constant curre-nt control part, effectively ensuring the pixel point light color height consistent.
The data transfer protocol use single NZR communication mode. After the pixel power-on reset, the DIN
port receive data from controller, the first pixel collect initial 24bit data then sent to the internal data latch,the other data which reshaping by the internal signal reshaping amplification circuit sent to the next cascade
pixel through the DO port. After transmission for each pixel，the signal to reduce 24bit. pixel adopt auto resha-ping transmit technology, making the pixel cascade number is not limited the signal transmission, only dependon the speed of signal transmission.
LED with low driving voltage, environmental protection and energy saving, high brightness, scattering angl
e is large, good consistency, low power, long life and other advantages. The control chip integrated in LEDabove becoming more simple circuit, small volume, convenient installation.

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WS2812Intelligent control LED
integrated light source
Mechanical Dimensions

PIN configuration

PIN function
NO.

Symbol

1DOUT

Control data signal output

2DIN

Control data signal input

3VCC

Power supply control circuit

4NC

5VDD

Power supply LED

6VSS

GroundAbsolute Maximum Ratings

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Function description

WS2812Intelligent control LED
integrated light source
PrameterSymbolRatings

Unit

Power supply voltage

VCC+6.0~+7.0V

Power supply voltage

VDD+6.0~+7.0VInput voltage

VI-0.5～VDD+0.5

V

Operation junction
temperatureTopt-25～+80℃

Storage temperature range

Tstg-55~+150℃

Electrical Characteristics（TA=-20～+70℃，VDD=4.5～5.5V,VSS=0V,unless otherwise specified）
PrameterSmybolconditions

Min

Tpy

Max

Unit

Low voltage output
current

IOL

ROUT

——

18.5

——

mA

Idout

Vo=0.4V，DOUT

10——

——

mA

Input current

II

VI=VDD/VSS

——

——

±1µA

VIH

DIN，SET

0.7VDD

——

——

V

VIL

DIN，SET————

0.3 VDDV

VH

DIN，SET——

0.35——

V

Input voltage level
Hysteresis voltage

Switching characteristics（TA=-20～+70℃，VDD=4.5～5.5V,VSS=0V,unless otherwise specified）
PrameterSymbolCondition

Min

Tpy

Max

Unit

Operation frequency

Fosc2

——

——

800

——

KHz

Transmission delaytimetPLZ

CL=15pF,DIN→
DOUT,RL=10KΩ

——

——

300ns

Fall time

tTHZ

CL=300pF,OUTR/OU
TG/OUTB

——

——

120µs

Data transmission
rate

FMAX

Duty ratio50%

400

——

——

Kbps

Input capcity

CI

——

——

——

15pF

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WS2812Intelligent control LED
integrated light sourceLED characteristic parameter
Emitting color

Wavelength(nm)Luminous intensity(mcd)Current(mA)

Voltage(V)Red

620-630550-700

20

1.8-2.2

Green515-530

1100-1400

20

3.0-3.2

Blue

465-475

200-400

20

3.2-3.4

Data transfer time( TH+TL=1.25µs±600ns)
T0H

0 code ,high voltage time

0.35us±150nsT1H

1 code ,high voltage time

0.7us

±150ns

T0L

0 code , low voltage time

0.8us

±150ns

T1L

1 code ,low voltage time

0.6us

±150nsRES

low voltage time

Above 50µs

Sequence chart:

T0L

0 codeT0 H
T1L1 co deT1HTreset

RET co deCascade method:D1

DIN DOPIX1

D2

DIN DO

D3

PIX2

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D4
DIN DOPIX3

WS2812Intelligent control LED
integrated light source
Data transmission method：

reset code>=50usData refresh cycle 1
first 2 4 b it

D1

Data refresh cycle 2

seco n d
2 4 b it th ird 2 4 b itseco n d
2 4 b itD2

resetcode

first 2 4 b itth ird 2 4 b itseco n d
2 4 b itth ird 2 4 b itseco n d
2 4 b itth ird 2 4 b itth ird 2 4 b itD3th ird 2 4 b it

D4Note: The data of D1 is send by MCU,and D2, D3, D4 through pixel internal reshaping amplification totransmit.
Composition of 24bit data:
G7G6G5G4G3G2G1G0R7R6R5R4R3R2R1R0

Note: Follow the order of GRB to sent data and the high bit sent at first.
Typical application circuit:

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B7B6B5B4B3B2B1

B0