ADP1660ACBZ-R7 datasheet(17/28 Pages) AD

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Data Sheet

ADP1660

Rev. 0 | Page 17 of 28

I2C INTERFACE

The ADP1660 includes an I2C-compatible serial interface for

control of the LED currents, as well as for readback of system

status registers. The I2C chip address is 0x30 (0x60 in write

mode and 0x61 in read mode). Additional I2C addresses are

available on request.

Figure 29 shows the I2C write sequence for a single register.

The subaddress byte selects the register that is written to. The

ADP1660 sends an acknowledgment to the master after the 8-bit

data byte is written. Figure 30 shows the I2C read sequence for a

single register.

For information about the registers and descriptions of all

SUBADDRESS

CHIP ADDRESS

0 = WRITE

ADP1660 RECEIVES

DATA

MASTER

STOP

Figure 29. I2C Write Sequence for a Single Register

CHIP ADDRESS

0 0

MASTER

STOP

CHIP ADDRESS

0 1

0 = WRITE

1 = READ

ADP1660 SENDS

DATA

SUBADDRESS

Figure 30. I2C Read Sequence for a Single Register

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