SI7013-A20 Datasheet, PDF (28/45 Pages) Silicon Laboratories – IC HUMIDITY AND TWO-ZONE TEMPERATURE SENSOR

Si7013-A20
The sequences for reading and writing thermistor coefficients are given below:
For example, to program a Si7013 at slave address 0x40 with the 16-bit value 0x4C2F, starting at memory location
0x82, you would write:
<Start Condition> 0x40 W ACK 0xC5 ACK 0x82 ACK 0x4C ACK <Stop Condition>
<Start Condition> 0x40 W ACK 0xC5 ACK 0x83 ACK 0x2F ACK <Stop Condition>
The internal memory is one-time-programmable, so it is not possible to change the values once written. However,
to verify the values were written properly use command 0x84. For example, to verify that 0x4C was written to
location 0x82 use:
<Start Condition> 0x40 W ACK 0x84 ACK 0x82 ACK <Start Condition> 0x40 R ACK 0x4C NACK <Stop
Condition> where 0x4C is the expected return value of the read transaction.
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Rev. 1.1