BD2802GU-E2 データシートの表示（PDF） - ROHM Semiconductor

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BD2802GU-E2

System LED Drivers for Mobile phones 6LEDs Illumination

ROHM Semiconductor 

BD2802GU

Technical Note

Register data

Wave pattern 1 (00h)

Wave pattern2 (01h)

Wave pattern 3 (02h)

Wave pattern 4 (03h)

Wave pattern 5

Wave pattern 6

(04h)

(05h)

Wave pattern 7 (06h)

Wave pattern 8

Wave pattern 9

(07h)

(08h)

Wave pattern 10 (09h)

Wave pattern 11 (0Ah)

Wave pattern 12

Wave pattern 13

(0Bh)

(0Ch)

Wave pattern 14 (0Dh)

Wave pattern 15 (0Eh)

Wave pattern 16 (0Fh)

Wave cycle

I1

I2

I1

I2

I1

I2

I1

I2

I1

I2

I1

I2

I1

I2

I1

I1

I2

I1

I1

I2

I1

I1

I2

I1

I2

I1

I1

I2

I1

I2

I1

I2

I1

I1

I2

I1

I1

I2

I1

I1

I2

I1

I2

I1

I2

I1

I2

（ex）The image of current change of Wave pattern 11

Current 2(I2)

Slope Down transition

Slope uptransition

Current 1(I1)

RGB wave setting timing diagram

6. Clock I/O

A reference clock I/O function is mounted in this IC chip. When two IC chips are used to extend an illumination

capability, clock supply to the other RGB LED driver can be accomplished for synchronization with this LSI chip.

This setting can be made via the register.

Clock output can be made with CLKEN=1 and CLKMD=1.

Register

CLKEN CLKMD

CLKIO terminal state

0

0/1

Input

1

0

1

Input

Output

Clock reception

Does not receive external clocks.

Operates on external clocks.

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19/27

2011.04 - Rev.A

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