FXPS7115D4 datasheet(15/75 Pages) NXP

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NXP Semiconductors

FXPS7115D4

Digital absolute pressure sensor, 40 kPa to 115 kPa

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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 host transmits a START condition.

2. The host transmits the 7-bit client address.

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

4. The client transmits an ACK.

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

6. The client transmits an ACK.

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

8. The client transmits an ACK.

9. The host transmits a STOP condition.

CLIENT ADDRESS

Host transmission

Client transmission

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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 host transmits a START condition.

2. The host transmits the 7-bit client address.

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

4. The client transmits an ACK.

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

6. The client transmits an ACK.

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

8. The client transmits an ACK.

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

10. The client transmits an ACK.

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

12. The host transmits a STOP condition.

FXPS7115D4

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 6 — 6 June 2022

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