LED Control IC

W2RF004RM

3

Terminal Designation

Note: 1. The RST terminal is connected to an internal 100 k

Ω pull-up resistor. When this terminal is not used, connect a 0.1 μF capacitor between

the terminal and ground to prevent misoperation at power-on.

2. Connect the CAP terminal to a capacitor for smoothing power supply. Connect a 0.1

μF capacitor between the terminal and GND.

3. Always leave the TST1 and TST2 terminals open.

4. Leave unused output terminals open.

Terminal Number

Terminal Name

Description

I/O

Logic

Function

1

TST1

Not used (See note 3)

- - -

2

TST2

Not used (See note 3)

- - -

3

SDA-O

Serial data buffer output

O

CMOS

4

SCL-O

Serial clock buffer output

O

5

SDA-I

Serial data input

I

CMOS, filter

6

SCL-I

Serial clock input

I

7

RST

Reset (See note 1)

I

L: Reset

CMOS, filter, pull-up

8

V

DD

Power source

P

9

CAP

Capacitor (See note 2)

- - -

10

GND

Ground

P

11

ADRA2

Device address A2

I

Refer to Operaton

section (See note 4)

CMOS

12

ADRA1

Device address A1

I

13

ADRA0

Device address A0

I

14

ADRB2

Device address B2

I

15

ADRB1

Device address B1

I

16

ADRB0

Device address B0

I

17

INV

Output inversion

I

18

GND

Ground

P

19

OUTA0

Output A0

O

N-ch open drain

20

OUTB0

Output B0

O

21

OUTC0

Output C0

O

22

OUTA1

Output A1

O

23

OUTB1

Output B1

O

24

OUTC1

Output C1

O

25

OUTA2

Output A2

O

26

OUTB2

Output B2

O

27

OUTC2

Output C2

O

28

GND

Ground

P