www.ams.com/AS5050

Revision 1.16

17 - 25

AS5050

Datasheet - Ap plicati on Information

8.1.3 SPI Connection to the Host µC

Single Slave Mode.

Figure 13. Single Slave Mode

Note: 3-Wire Mode (read only): If the ERROR FLAG is set the device must be externally reset.

Time between last falling edge of SCK and rising edge of SS/

ns

High time of SS/ between two transmissions

50

ns

Data input valid to clock edge

20

ns

SCK edge to data output valid

20

ns

Table 16. SPI Timing Characteristics

Parameter

Description

Min

Max

Unit

UC

AS5050

MOSI

MISO

SCK

SS/

MISO

MOSI

SCK

SS/

Wire_Mode

1

UC

AS5050

SISO

SCK

SS/

MOSI

MISO

SCK

SS/

Wire_Mode

0

Write CMD

Read angle 3

Write CMD

Read angle2

Angle1

Angle2

Write CMD

Read angle1

Write CMD

Read angle4

Angle 3

Write CMD

Read angle 5

Write CMD

Read angle6

Angle5

Angle 4

Write CMD

NOP

...

Angle6

Write CMD

Read angle2

Write CMD

Read angle1

Angle 1

Angle 2

Write CMD

Read angle 3

Angle 4

Angle 3

MOSI

MISO

0xFFFF

0xFFFF

0xFFFF

0xFFFF

0xFFFF

SISO

Write CMD

Read angle 4

UC

AS5050

MISO

SCK

SS/

MISO

MOSI

SCK

SS/

Wire_Mode

1

1

...

Angle 1

Angle 2

Angle4

Angle3

Angle6

Angle5

MISO

Angle7

4-wire mode

3-wire mode(Read only )

3-wire mode(Bi- dir)

0xFFFF

0xFFFF

0xFFFF

0xFFFF

0xFFFF

SS/

SS/

SS/