FXPS7115D4 datasheet(16/72 Pages) NXP

16 / 72 page

NXP Semiconductors

FXPS7115D4

Digital absolute pressure sensor, 40 kPa to 115 kPa

FXPS7115D4

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Product data sheet

Rev. 3 — 5 December 2019

16 / 72

aaa-029750

SDA

SCL

STOP

Figure 18. I2C stop condition

7.4.6 I2C register transfers

7.4.6.1 Register write transfers

The device supports I2C register write data transfers. Register write data transfers are

constructed as follows:

1. The master transmits a START condition.

2. The master transmits the 7-bit slave address.

3. The master transmits a '0' for the read/write bit to indicate a write operation.

4. The slave transmits an ACK.

5. The master transmits the register address to be written.

6. The slave transmits an ACK.

7. The master transmits the data byte to be written to the register address.

8. The slave transmits an ACK.

9. The master transmits a STOP condition.

SLAVE ADDRESS

Master transmission

Slave transmission

aaa-029920

The device automatically increments the register address allowing for multiple register

writes to be completed in one transaction. In this case, the register write data transfers

are constructed as follows:

1. The master transmits a START condition.

2. The master transmits the 7-bit slave address.

3. The master transmits a '0' for the read/write bit to indicate a write operation.

4. The slave transmits an ACK.

5. The master transmits the register address to be written.

6. The slave transmits an ACK.

7. The master transmits the data byte to be written to the register address.

8. The slave transmits an ACK.

9. The master transmits the data byte to be written to the register address +1.

10.The slave transmits an ACK.

11.Repeat steps 9 and 10 until all registers are written.

12.The master transmits a STOP condition.

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