AK8963 データシートの表示（PDF） - Asahi Kasei Microdevices

部品番号

コンポーネント説明

メーカー

AK8963

3-axis Electronic Compass

Asahi Kasei Microdevices 

[AK8963]

8.3.11.

ASAX, ASAY, ASAZ: Sensitivity Adjustment values

Addr

Register

name

D7

D6

D5

D4

D3

D2

D1

D0

Read-only register

10H

ASAX

11H

ASAY

12H

ASAZ

Reset

COEFX7 COEFX6 COEFX5 COEFX4 COEFX3 COEFX2 COEFX1 COEFX0

COEFY7 COEFY6 COEFY5 COEFY4 COEFY3 COEFY2 COEFY1 COEFY0

COEFZ7 COEFZ6 COEFZ5 COEFZ4 COEFZ3 COEFZ2 COEFZ1 COEFZ0

-

-

-

-

-

-

-

-

Sensitivity adjustment data for each axis is stored to fuse ROM on shipment.

ASAX[7:0]: Magnetic sensor X-axis sensitivity adjustment value

ASAY[7:0]: Magnetic sensor Y-axis sensitivity adjustment value

ASAZ[7:0]: Magnetic sensor Z-axis sensitivity adjustment value

<How to adjust sensitivity>

The sensitivity adjustment is done by the equation below;

Hadj = H ×  (ASA −128)× 0.5 + 1 ,



128



where H is the measurement data read out from the measurement data register, ASA is the sensitivity

adjustment value, and Hadj is the adjusted measurement data.

MS1356-E-02

- 32 -

2013/10

Share Link: