H28 Datasheet, PDF (8/11 Pages) –

I²C SERIAL INTERFACE CONTROL
Conversion Result – Read Sequence
Table 5 presents general control sequence for
single register data read.
Table 5 H28 I2C bus single register (address Ax)
Table 6 presesents control sequence for reading the 16-bit A/D conversion result from both MSB and LSB data
registers. LSB register data (DL) can be read right after MSB register data (DM) read since in case the read
sequence is continued (not ended to stop condition P) the register address is automatically incremented to
point to next register address (in this case to point to the LSB data register).
Table 6 H28 I2C bus MSB (first) and LSB (second) A/D conversion result
read sequence
Accuracy Improvement – Averaging
Averaging technique can be used to remove conversion error caused by noise and thus improve measurement
accuracy. By accomplishing several A/D conversions and taking average of the samples, it is possible to
average out noise. Theoretically noise is reduced by factor N where N is number of averaged samples.
Converter non-linearities cannot be removed by averaging.