IP5328P

V1.2

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I2C

I2C connection:

L3

L2

L1

VREG

VREG

INT

3.3k

3.3k

VSET

I2C model

SLK

SDA

Connection according to the corresponding way will automatically turn off the other Function, automatically

enter the I2C mode. When connected to I2C mode, INT signal is in high resistance state when standby and high

level state when working, which can be used to wake up MCU.

I2C mode supports 400Kbps, 8bits register address, 8bits register data. Sending and receiving are all in high

order (MSB). I2C device address: write as 0xEA, read as 0xEB.

For example:

Writing 0x5A into 0x05 register:

SCLK

SDA

Start

sACK

Slave address 0xEA

sACK

Register address 0x05

sACK

Data 0x5A

Stop

I2C WRITE

Reading data from 0x05 register:

SCLK

SDA

Start

sACK

Slave address 0xEA

sACK

Register address 0x05

mNACK

Data 0x5A

Stop

Restart

sACK

Slave address 0xEB

I2C Read

Under I2C mode, RSET is low level when IP5328P is power down and high level when IP5328P is power up,

thus RSET can be used for MCU wake up.