WS2811

Signal line 256 Gray level 3 channal

Constant current LED drive IC

http://www.world-semi.com

Sequence chart:

0 co d e

1 cod e

R E T co d e

T 0H

T 0 L

T 1 H

T 1L

Treset

Cascade method:

DIN

DIN

D IN

DO

DO

DO

IC 1

IC 2

IC 3

D1

D2

D3

D4

Data transmission method:

Note: The data of D1 is send by MCU,and D2, D3, D4 through IC internal reshaping amplification to

transmit.

Composition of 24bit data:

R7

R6

R5

R4

R3

R2

R1

R0

G7

G6

G5

G4

G3

G2

G1

G0

B7

B6

B5

B4

B3

B2

B1

B0

Note: Follow the order of RGB to sent data and the high bit sent at first.

Da ta refresh cycle 1

Data refresh cycle 2

first 2 4 b it

seco n d

2 4 b it

th ird 2 4 b it

first 2 4 b it

seco n d

2 4 b it

th ird 2 4 b it

seco n d

2 4 b it

th ird 2 4 b it

seco n d

2 4 b it

th ird 2 4 b it

th ird 2 4 b it

th ird 2 4 b it

D1

D2

D3

D4

reset code

>=50us

reset

code