tb62778fng Marktech Optoelectronics, tb62778fng Datasheet - Page 2

• Manufacturer Part Number: tb62778fng
• Description: 8-channel Constant-current Led Driver Of The 3.3-v And 5-v Power Supply Voltage Operation
• Manufacturer: Marktech Optoelectronics

Pin Assignment
Block Diagram
Truth Table
Note 1:
SERIAL-IN
ENABLE
CLOCK
LATCH
CLOCK
SERIAL-IN
R-EXT
LATCH
CLOCK
OUT0
OUT2
OUT3
OUT1
OUT0 to OUT7 = On when Dn = H; OUT0 to OUT7 = Off when Dn = L.
GND
LATCH
(top view)
H
H
X
X
L
TSD
I-REG
Special
mode
ENABLE
D0
H
H
L
L
L
ST
VDD
R-EXT
SERIAL-OUT
ENABLE
OUT7
OUT6
OUT5
OUT4
Q
R
Q0
D
OUT0
SERIAL-IN
TENTATIVE
Dn + 1
Dn + 2
Dn + 3
Dn + 3
ST
8-bit shift register
Dn
Q
R
2
Q1
D
OUT1
D0 to D7
Error detection
OUT0 … OUT5 … OUT7
Dn + 2 … Dn − 3 … Dn − 5
Q7
Dn … Dn − 5 … Dn − 7
No Change
OFF
OFF
D
CK
R
ST
Q
R
Q
R
D
OUT7
(Ver.0.0) 08-02-07
TB62778FNG
SERIAL-OUT
SERIAL-OUT
No change
No change
No change
No change
POR
Dn − 4
GND
VDD