AK7401 Datasheet, PDF (25/29 Pages) Asahi Kasei Microsystems – Rotary Position Sensor IC

[AK7401]
18. Default Settings Information
The AK7401 default settings are as below.
1. Zero Degree Point
Figure 10 shows the default relationship between the magnet placement and the zero degree
point.
0_°
8
5
NS
NS
1
4
8
5
NS
1
4 _90°
Figure 10. Default Angle Setting
2. Magnet Rotation Direction
Figure 10. shows the default magnet rotation direction. The default setting is counter
clock-wise (CCW).
CCW is defined by the 1-4-5-8 pin order direction for SOP-8 package top view position.
3. Over and Under Magnetic Flux Density Limit
The default setting of upper limit of the magnetic flux density is approximately 80mT and under
limit is 5mT.
4. PWM Frequency
The default setting is 1000Hz.
5. PWM Polarity
The default setting is plus polarity.
In plus polarity settings, the highest angle data corresponds to maximum PWM duty.
6. Output Setting of the OUT Pin
The default setting is Push-Pull output type.
7. Self-diagnostic Configuration
The default setting is all valid diagnostic function.
8. Memory Lock
The default setting is unlocked.
014002685-E-01
- 25 -
2015/07