AK9720 Datasheet, PDF (18/31 Pages) Asahi Kasei Microsystems – IR Sensor Module with I2C I/F

[AK9720]
4.5 Continuous Measurement Mode2 (MODE [2:0] =”011”)
When the AK9720 is set to Continuous Measurement Mode2 (MODE [2:0] =”011”), the
measurement is repeated according to the power down time (TBD Hz). When the
measurement and data processing have been done, the measurement data is stored to the
measurement data register (IRSL to TMPH data), and all circuits except those for the
periodic measurement transition to Stand-by(SB) state. The circuits that are in
Stand-by(SB) state are returned to active mode by detecting the next measurement time,
and the measurement is started again.
Measurement Mode is finished by setting the AK9720 to Power down Mode (MODE [2:0]
=”000”).
(N-1)
N
(N+1)
SB
Measurement
SB
Measurement
SB
( defined by
FRATE[2:0] )
( defined by STB[2:0] )
Fig.5. Continuous Measurement Mode2
Rev.02
AKM Confidential
- 18 -
2012/11