AS5030 AB austriamicrosystems, AS5030 AB Datasheet - Page 13

• Manufacturer Part Number: AS5030 AB
• Description: BOARD ADAPTER AS5030
• Manufacturer: austriamicrosystems

Specifications of AS5030 AB

• Sensor Type: Magnetic, Rotary Position
• Sensing Range: 360°
• Interface: Serial
• Voltage - Supply: 5V
• Embedded: No
• Utilized Ic / Part: AS5030
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Sensitivity: -

AS5030
Datasheet - D e t a i l e d D e s c r i p t i o n
7.3 Serial 3-Wire Read-only Connection
If the AS5030 is only used to provide the angular data (no power down or OTP access) this simplified connection is possible. The Chip Select
(CS) and Clock (CLK) connection is the same as in the R/W mode, but only a digital input pin (not an I/O pin) is required for the DIO connection.
As the first 5 bits of the data transmission are command bits sent to the AS5030, both the microcontroller and the AS5030 are configured as
digital inputs during this phase. Therefore, a pull-down resistor must be added to make sure that the AS5030 reads “00000” as the first 5 bits
which sets the Read_Angle command.
All further application examples are shown in R/W mode, however read-only mode is also possible, unless otherwise noted.
Figure 6. SSI Read-only Serial Data Transmission
Figure 7. Timing Diagram in 2-wire and 3-wire SSI Mode
Table 4. Serial Bit Sequence (16-bit read/write)
www.austriamicrosystems.com/AS5030
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11 D10
0
CLK
CS
DIO
DIO
0
0
t 1
0
VSS
+ 5 V
VDD
1
0
Micro
Controller
C2
command phase
VSS
2
VDD
lock
Output
Output
Input
3
D5
D4
4
10 k ...
100 k
D3
AGC
5
Revision 2.1
Read
D2
11
10
D 15
12
D9
D1
6
CS
CLK
D I O
D 14
D8
D0
14
C 1
data phase
7
13
AS5030
D7
D7
15
C 2
VDD
D 13
8
D6
D6
VSS
3
D 12
D5
D5
D 1
20
100 n
D4
D4
Angle
D 0
21
D3
D3
t 9
t 10
D2
D2
DIO read
DIO write
D1
D1
13 - 44
D0
D0