TLC5923

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SLVS550B – DECEMBER 2004 – REVISED JANUARY 2013

Terminal Functions

TERMINAL

NO.

I/O

DESCRIPTION

NAME

TSSOP

QFN

Blank (Light OFF). When BLANK=H, All OUTn outputs are forced OFF. When BLANK=L,

BLANK

2

30

I

ON/OFF of OUTn outputs are controlled by input data.

GND

1

29

Ground

IREF

31

27

I/O

Reference current terminal

Mode select. When MODE=L, SIN, SOUT, SCLK, XLAT are connected to ON/OFF control

MODE

30

26

I

logic. When MODE=H, SIN, SOUT, SCLK, XLAT are connected to dot-correction logic.

OUT0

7

3

O

Constant current output

OUT1

8

4

O

Constant current output

OUT2

10

6

O

Constant current output

OUT3

11

7

O

Constant current output

OUT4

12

8

O

Constant current output

OUT5

13

9

O

Constant current output

OUT6

15

11

O

Constant current output

OUT7

16

12

O

Constant current output

OUT8

17

13

O

Constant current output

OUT9

18

14

O

Constant current output

OUT10

20

16

O

Constant current output

OUT11

21

17

O

Constant current output

OUT12

22

18

O

Constant current output

OUT13

23

19

O

Constant current output

OUT14

25

21

O

Constant current output

OUT15

26

22

O

Constant current output

6, 9, 14,

2, 5, 10,

PGND

Power ground

19, 24, 27

15, 20, 23

Data shift clock. Note that the internal connections are switched by MODE (pin #30). At

SCLK

4

32

I

SCLK

↑, the shift-registers selected by MODE shift the data.

SIN

5

1

I

Data input of serial I/F

SOUT

28

24

O

Data output of serial I/F

VCC

32

28

Power supply voltage

Error output. XERR is open drain terminal. XERR transistions from H to L when LOD or TEF

XERR

29

25

O

detected.

Data latch signal. When MODE = L (ON/OFF data mode), XLAT is an edge-triggered latch

signal of ON/OFF registers. The serial data in ON/OFF input shift registers is latched into the

ON/OFF registers at the rising edge of XLAT. When MODE = H (DC data mode), XLAT is a

XLAT

3

31

I

level-triggered latch signal of dot correction registers. The serial data in DC input shift

registers is written into dot correction registers when XLAT = H. The data in dot correction

registers is held constant when XLAT = L.

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