TLC5920

16x8 BIT LED DRIVER/CONTROLLER

SLAS264A – MARCH 2000 REVISED SEPTEMBER 2002

3

POST OFFICE BOX 655303

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

BLANK

39

I

Blank(light off). By turning all the output for the common driver off, the LED is turned off. When

BLANK is high, the LED is turned off.

COM0 – COM7

4, 3, 2, 1, 47, 46,

45, 44

O

LED common driver output

CSEL0 – 2

38, 36, 35

I

Common driver select. One terminal out of COM0 through COM7 is selected.

2

1

0

Common Driver

LLL

0

LL

H

1

LHL

2

LH

H

3

HL

L

4

HLH

5

HH

L

6

HHH

7

DSEL

33

I

Display select. When DSEL is high, the LED is turned off. Note that, when BLANK is high,

the LED is turned off with no regard to the DSEL input.

DSEL

30

O

Display select output. The inverted data of DSEL is clocked out.

GNDANA

21

Analog ground

GNDLED

5, 43, 48

LED driver ground

GNDLOG

37

Logic ground

IREF

17

I

Constant current control setting. The LED current is set to the desired value by connecting

an external resistor between IREF and GND.

LATCH

41

I

Latch. When LATCH is high, data on the shift register goes through latch. When LATCH is

low, data is latched.

SIN

42

I

Serial input for display

SOUT

32

O

Serial output for display

SCLK

40

I

Synchronous clock input for serial data transfer. The input data of SIN is synchronized to

the rising edge of SCLK, and transferred to SOUT.

S0 – S15

9, 10, 11, 12, 13, 14,

15, 16, 22, 23, 24,

25, 26, 27, 28, 29

O

LED segment driver output

VANA

19

Analog power supply voltage

VLOG

34

Logic power supply voltage

VLED

8, 18, 31

LED driver power supply voltage