AK9720 Datasheet, PDF (17/31 Pages) Asahi Kasei Microsystems – IR Sensor Module with I2C I/F

Operating mode： Single Measurement
Power down
(1)
Measurement Period
Measurement data register
data(1)
[AK9720]
(2)
(3)
data(2)
data(3)
DRDY
Read-out data
data(1)
ST1
ST2
Register Write MODE[2:0]="001"
MODE[2:0]="001" MODE[2:0]="001"
Fig.3. Single shot Mode (when measurement data is read out within the measurement
period.)
4.4 Continuous Measurement Mode1 (MODE [2:0] =”010”)
When the AK9720 is set to Continuous Measurement Mode1 (MODE [2:0] =”010”), the
measurement is automatically repeated. When a measurement and data processing have
been done, the measurement data is stored to the measurement data register (IRSL to
TMPH data), and the measurement is started again.
Measurement Mode is finished by setting the AK9720 to Power down Mode (MODE [2:0]
=”000”).
(N-1)
Measurement
N
Measurement
(N+1)
Measurement
(N+2)
Measurement
(N+3)
Measurement
(N+4)
Measurement
Fig.4. Continuous Measurement Mode1
Rev.02
AKM Confidential
- 17 -
2012/11