TB2104F

2002-10-30

2

Pin Function

Pin

No.

Symbol

Pin Name

Function And Operation

Remarks

1

AD1

30

AD2

Address

setting input

・

Chip select / address setting inputs

・

When using in serial mode, keep AD1 and AD2 “open”.

・

In other settings than “open”, it becomes T

-BUS mode

and addresses up to 8 kinds can be set.

3

LS

Strobe input

28

CLK

Clock input

29

DIN

Data input

・

Serial data input terminals

・

Inputs display data through the DIN terminal

synchronizing with rise of CLK input.

・

Display data are updated when inputting “H” level into

LS terminal after completing data input.

・

In T

-BUS mode, LS terminal becomes “period” input.

CMOS

input

2

CG / DO

Lamp test

input and

data output

・

Lamp test input terminal and data output terminal

・

In serial mode (AD1 = AD2 = open), this terminal serves as

the serial data output terminal and enables cascade

connection of driver IC.

・

In T

-BUS mode, this terminal serves as the lamp test

input and is able to use all the driver outputs (HVO

-1~-

20) at “H” level by inputting “H” level signal.

・

During the normal operation in T

-BUS mode, use this

terminal by fixing at “L” level.

CMOS

input /

CMOS

output

built in

pull

-down

resistor

20kΩ

4

Clear input

・

Driver off (blanking) input terminal

・

All the driver outputs are fixed at “L” level when “L”

level signal is input.

・

When “H” level signal is input, it becomes the normal

mode.

CMOS

input

built in

pull

-up

resistor

20kΩ

5

Logic unit

power supply

26

Drive unit

power supply

27

GND

Ground

・

Power supply and GND terminals

—

25

24

23

⋮

⋮

8

7

6

HVO

-1

HVO

-2

HVO

-3

⋮

⋮

HVO

-18

HVO

-19

HVO

-20

Driver output

・

High

-tension driver output terminal

・

Equivalent circuit

—