AK8973 Datasheet, PDF (7/31 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

ASAHI KASEI
4.3. Pin Function
[AK8973]
Power
No. Pin name I/O supply Type
Function
system
1 CAD0
I
VID CMOS Slave address 0 input pin
2 CAD1
I
VID CMOS Slave address 1 input pin
3
VID
-
POWER _{Digital interface positive power supply pin.}
This pin is a positive power supply pin for the digital
interface block. By connecting this pin to a 1.85V power
supply, the low-voltage specification digital interface can be
connected.
4
SDA
I/O VID CMOS _{Control data input/output pin}
Input: Schmidt trigger, Output: Open drain
5
SCL
I
VID CMOS _{Control data clock input pin}
Input: Schmidt trigger
6
TST1
I/O
-
Analog _{Test pin}
In usual use, eliminate unnecessary wiring, separate this pin
from other test pins, and keep this pin electrically
nonconnected.
7
INT
O
VID CMOS Interrupt signal output pin
This pin is used to post the measurement completion to the
external CPU. Refer to 6.3.
8 RSTN
I
VID CMOS _{Reset pin}
This pin resets all the register values when "L" is applied.
After turning the power on, be sure to apply "L".
9
NC1
-
-
-
Nonconnected pin
In usual use, eliminate unnecessary wiring, separate this pin
from other test pins, and keep this pin electrically
nonconnected.
10 TST2
I/O
-
Analog Test pin
11 TST3
I/O
-
Analog In usual use, eliminate unnecessary wiring, separate this pin
from other test pins, and keep this pin electrically
nonconnected.
12 NC2
-
-
-
Nonconnected pin
13 NC3
-
-
14 NC4
-
-
-
In usual use, eliminate unnecessary wiring, separate this pin
-
from other test pins, and keep this pin electrically
nonconnected.
15 VDD
-
POWER Power supply pin
16 VSS
-
POWER Ground pin
MS0561-E-01 <Preliminary>
-7-
2007/01