AK7401 Datasheet, PDF (15/29 Pages) Asahi Kasei Microsystems – Rotary Position Sensor IC

[AK7401]
● EEPROM Write Sequence Diagnostic Function
The AK7401 indicates an error when there is overtime in the loading sequence for EEPROM (Typ.
6.4ms). This error sets the PWM output to low level and error bit to “0”.
● Under or Over Voltage Supply Detection
The AK7401 indicates an error when supply voltage is less than under voltage detection level (Typ.
V_DD<3.5V) or supply voltage is more than over voltage detection level (Typ. V_DD>6.0V). This error
sets the PWM output to low level and error bit to “0”.
● Excessive Over Voltage Supply Detection
The AK7401 indicates an error when supply voltage is more than output shutdown level (Typ.
V_DD>7.3V). This error sets the PWM output to high impedance (Hi-Z) and error bit to “0”.
17. Register & EEPROM Address Map &Description
● Register Address Map
Permission
Address Register Name
Normal
User
Content
Mode
Mode
0x00
R_ANG[11:0]
R
R
Angle Data
0x01
R_MFDI[7:0]
N/A
R
Magnetic Flux Density Data
0x02
R_CHMD[11:0]
W
R/W Mode Indicator
0x03
R_MLK[11:0]
N/A
R
Memory Lock Indicator
0x04
R_ID[11:0]
N/A
R/W Free Bits for User
0x05
R_RD[2:0]
N/A
R/W Rotation Direction Configuration
0x06
R_ZP[11:0]
N/A
R/W Zero Degree Point Configuration
0x07
R_ABNRM[11:0]
N/A
R/W Self-diagnostic Configuration
0x08
R_MFDRH[7:0]
N/A
R/W Upper Limit of Magnetic Flux Density
0x09
R_MFDRL[7:0]
N/A
R/W Lower Limit of Magnetic Flux Density
0x0A
R_PWMPL[8:6]
R_PWMF[5:0]
N/A
R/W
PWM Polarity Configuration
PWM Frequency Configuration
0x0B R_PWMOMD[2:0]
N/A
R/W Output Type of the OUT Pin Configuration
0x0C
N/A
N/A
N/A -
0x0D
R_IT[8:3]
N/A
R/W Angle Data Averaging Configuration
(N/A: not available, R: read only, W: write only, R/W: full access)
014002685-E-01
- 15 -
2015/07