AK8963N Datasheet, PDF (29/38 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

8.3.4. HXL to HZH: Measurement Data
Addr Register name D7
D6
Read-only register
03H
HXL
04H
HXH
05H
HYL
06H
HYH
07H
HZL
08H
HZH
Reset
HX7
HX15
HY7
HY15
HZ7
HZ15
0
HX6
HX14
HY6
HY14
HZ6
HZ14
0
D5
HX5
HX13
HY5
HY13
HZ5
HZ13
0
D4
HX4
HX12
HY4
HY12
HZ4
HZ12
0
D3
HX3
HX11
HY3
HY11
HZ3
HZ11
0
D2
HX2
HX10
HY2
HY10
HZ2
HZ10
0
[AK8963]
D1
D0
HX1 HX0
HX9 HX8
HY1 HY0
HY9 HY8
HZ1 HZ0
HZ9 HZ8
0
0
Measurement data of magnetic sensor X-axis/Y-axis/Z-axis
HXL[7:0]: X-axis measurement data lower 8bit
HXH[15:8]: X-axis measurement data higher 8bit
HYL[7:0]: Y-axis measurement data lower 8bit
HYH[15:8]: Y-axis measurement data higher 8bit
HZL[7:0]: Z-axis measurement data lower 8bit
HZH[15:8]: Z-axis measurement data higher 8bit
Measuremnet data is stored in two’s complement and Little Endian format. Measurement range of each
axis is -8190 ~ +8190 in decimal in 14-bit output, and -32760 ~ 32760 in 16-bit output.
Table 8.3 Measurement data format
Measurement data (each axis) [15:0]
Two’s complement
Hex
Decimal
14-bit output
0001 1111 1111 1110
1FFE
8190
|
|
|
0000 0000 0000 0001
0001
1
0000 0000 0000 0000
0000
0
1111 1111 1111 1111
FFFF
-1
|
|
|
1110 0000 0000 0010
E002
-8190
16-bit output
0111 1111 1111 1000
7FF8
32760
|
|
|
0000 0000 0000 0001
0001
1
0000 0000 0000 0000
0000
0
1111 1111 1111 1111
FFFF
-1
|
|
|
1000 0000 0000 1000
8008
-32760
Magnetic flux
density [µT]
4912(max.)
|
0.6
0
-0.6
|
-4912(min.)
4912(max.)
|
0.15
0
-0.15
|
-4912(min.)
MS1356-E-02
- 29 -
2013/10