AK9720 Datasheet, PDF (15/31 Pages) Asahi Kasei Microsystems – IR Sensor Module with I2C I/F

[AK9720]
3. Operating Mode
AK9720 has five operating modes as below.
(1) Power down Mode
(2) Single shot Mode
(3) Continuous Mode1
(4) Continuous Mode2
(5) EEPROM access Mode
Operating mode can be selected by setting the MODE [2:0] bit of CNTL1 register.
Power down
Mode
MODE[2:0]=“001”
MODE[2:0]=“000”
Automatic Shift
MODE[2:0]=“010”
MODE[2:0]=“000”
Single shot Mode
Measurement is done once, and Power down Mode
is automatically selected after outputting the
measurement data.
Continuous Mode1
Measurement is automatically repeated.
Power down Mode is selected by setting
MODE[2:0] to“000”
MODE[2:0]=“011”
MODE[2:0]=“000”
MODE[2:0]=“100”
MODE[2:0]=“000”
Digital Mode
CAD1=1
and
CAD0=1
Continuous Mode2
Measurement is automatically repeated in an
intermittent operation.
Power down Mode is selected by setting
MODE[2:0] to“000”
EEPROM Access Mode
EEPROM read-out circuit goes on.
Power down Mode is selected by setting
MODE[2:0] to“000”
CAD1=0
or
CAD0=0
( Back from the analog output mode
defined in MODE[2:0] registers )
Analog Output Mode
Regardless of the data in MODE[2:0], mode status is masked to operation , and
analog outputs are shown on SOUT,TOUT pins whatever STOBEN is.
Fig.1. Operation MODE
When the power supply turns on, the AK9720 is in Power down Mode. According to
MODE[2:0] setup,, the AK9720 shifts to the selected mode, and starts operating. Set the
AK9720 to Power down Mode before changing this register setting.
Rev.02
AKM Confidential
- 15 -
2012/11