SAME SKY | SERIES: PS02 | DESCRIPTION: PRESSURE SENSOR

date 09/12/2024 | page 4 of 7

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I2C OPERATION

S

P

A

N

from master to slave

from slave to master

START condition

STOP condition

acknowledge

not acknowledge

SP

AA

SlaveAddr

0

Command

write

Convert Pressure Value

Pressure (kPa) = P

max/0.8*(x/2

23

-0.1)

Read Data

P

N

A

SA

A

SlaveAddr

1

Measurement

<23:16>

read

Measurement

<15:8>

Measurement

<7:0>

Command Request

I2C slave address: Ox06D

Pressure Command: 0x06

Temperature Command: 0x09

Convert Temperature Value

For x<223: Temperature (⁰C) = x/216+25

For x

≥223: Temperature (⁰C) = (x-224)/216+25

Steps to read data from PS02 sensor

1. Write the corresponding command to the sensor (0x06 for pressure, 0x09 for temperature).

2. Read three bytes from the sensor.

3. Combine these three bytes into a single 24-bit value.

4. Convert the 24-bit value to a standard pressure or temperature unit using the formulas below.

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