[AK09916]

015007392-E-02

2015/12

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9.4.3.3. Data Read Start during Measurement

When sensor is measuring (Measurement period), measurement data registers (HXL to TMPS) keep the

previous data. Therefore, it is possible to read out data even in measurement period. If data is started to be

read during measurement period, previous data is read.

(N-1)th

Nth

(N+1)th

PD

Measurement

PD

Measurement

PD

Measurement Data Register

(N-1)th

Nth

DRDY

Data read

ST1

Data(N)

ST2

ST1

Data(N)

ST2

Figure 9.6. Data read start during measurement

9.4.3.4. Data Skip

When Nth data was not read before (N+1)th measurement ends, Data Ready remains until data is read. In

this case, a set of measurement data is skipped so that DOR bit turns to “1”.

When data reading started after Nth measurement ended and did not finish reading before (N+1)th

measurement ended, Nth measurement data is protected to keep correct data. In this case, a set of

measurement data is skipped and not stored so that DOR bit turns to “1”.

In both case, DOR bit turns to “0” at the next start of data reading.

(N-1)th

Nth

(N+1)th

PD

Measurement

PD

Measurement

PD

Measurement Data Register

(N-1)th

Nth

(N+1)th

DRDY

DOR

Data read

ST1

Data(N+1)

ST2

Figure 9.7. Data Skip: When data is not read