AK09912 Datasheet, PDF (8/42 Pages) HuaXinAn Electronics CO.,LTD – 3-axis Electronic Compass

Current consumption
(Note 4)
IDD1
IDD2
IDD3
IDD4
IDD5
VDD
VID
Power-down
mode
Vdd=Vid=3.0V
When magnetic
sensor is driven
Self-test mode
When temperature
sensor is driven
(Note 5)
3
6
1.4
2.3
3.4
5
1
1.5
0.1
5
[AK09912]
µA
mA
mA
mA
µA
(Note 2) Schmitt trigger input (reference value for design)
(Note 3) Output is open-drain. Connect a pull-up resistor externally
(Note 4) Without any resistance load
(Note 5) (case 1) Vdd=ON, Vid=ON, RSTN pin=“L”. (case 2) Vdd=ON, Vid=OFF (0V), RSTN pin=“L”. (case 3)
Vdd=OFF (0V), Vid=ON.
5.3.2. AC Characteristics
Parameter
Symbol Pin
Condition
Min. Typ. Max.
Unit
Power supply rise time PSUP VDD Period of time that VDD
50
ms
(Note 6)
VID (VID) changes from 0.2V
to Vdd (Vid).
POR completion time PORT
Period of time after PSUP
100
µs
(Note 6)
to Power-down
mode(Note 7)
Power supply turn off SDV VDD Turn off voltage to enable
0.2
V
voltage (Note 6)
VID POR to restart(Note 7)
Power supply turn on PSINT VDD Period of time that voltage 100
µs
interval (Note 6)
VID lower than SDV needed to
be kept to enable POR to
restart(Note 7)
Wait time before mode Twat
100
µs
setting
Wait time of Fuse ROM Twatr
Wait time from Fuse
100
µs
reading
ROM access mode setting
to accessible Fuse ROM
(Note 6) Reference value for design.
(Note 7) When POR circuit detects the rise of VDD/VID voltage, it resets internal circuits and initializes the registers.
After reset, AK09912 transits to Power-down mode.
VDD/VID
PORT:100us
Power-down mode
SDV:0.2V
Power-down Fuse ROM
mode
access mode
モード
Twat:100us Twatr:100us
Accessible
Fuse ROM
0V
PSUP:50ms
PSINT:100us
MS1547-E-02
-8-
2014/7