as5055 austriamicrosystems, as5055 Datasheet - Page 2

• Manufacturer Part Number: as5055
• Description: Low Power 12 Bit Magnetic Rotary Encoder
• Manufacturer: austriamicrosystems

AS5055
Data Sheet – Table of Contents
5 Table of Contents
1
2
3
4
5
6
7
8
9
10
11
12
13
www.austriamicrosystems.com
6.1
6.2
7.1
7.2
7.3
7.4
9.1
9.2
9.3
9.4
9.5
10.1
10.2
10.3
10.4
10.5
11.1
11.2
11.3
12.1
13.1
General Description ............................................................................................................................................1
Benefits ..............................................................................................................................................................1
Key Features ......................................................................................................................................................1
Applications ........................................................................................................................................................1
Table of Contents................................................................................................................................................2
Pinout.................................................................................................................................................................3
General Specifications ........................................................................................................................................4
User Programming ..............................................................................................................................................5
Operation Modes ................................................................................................................................................6
9.3.1
10.5.1
10.5.2
10.5.3
10.5.4
10.5.5
11.3.1
11.3.2
11.3.3
Pin Assignments...........................................................................................................................................3
Pin Descriptions ...........................................................................................................................................3
Absolute Maximum Ratings (Non operating) ..................................................................................................4
Operating Conditions ....................................................................................................................................4
System Parameters ......................................................................................................................................5
DC/AC Characteristics ..................................................................................................................................5
Typical Application .......................................................................................................................................6
Power Supply Filter ......................................................................................................................................6
Reading an Angle .........................................................................................................................................6
Low Power Mode..........................................................................................................................................7
Interrupt Chaining.........................................................................................................................................8
SPI Communication ......................................................................................................................................9
SPI Interface .............................................................................................................................................. 15
Placement of the Magnet ............................................................................................................................ 19
Package Information................................................................................................................................... 20
Command Package ..................................................................................................................................9
Read Package (Value Read from AS5055) ...............................................................................................9
Write Data Package (Value Written to AS5055).........................................................................................9
Register Block........................................................................................................................................ 10
SPI Interface Commands........................................................................................................................ 11
SPI Interface Signals (4-Wire Mode, Wire_mode = 1).............................................................................. 15
SPI Timing ............................................................................................................................................. 16
SPI Connection to the Host UC............................................................................................................... 17
Non-Linearity Error over Displacement ................................................................................................... 19
Ordering Information .............................................................................................................................. 21
Reducing the Angle Jitter .....................................................................................................................6
READ Command ............................................................................................................................... 11
WRITE Command .............................................................................................................................. 11
CLEAR ERROR FLAG Command....................................................................................................... 12
SOFTWARE RESET Command ......................................................................................................... 13
NOP Command ................................................................................................................................. 14
Single Slave Mode ............................................................................................................................. 17
Multiple Slave, n+3 Wire (Separate ChipSelect).................................................................................. 18
Daisy Chain, 4 Wire ........................................................................................................................... 18
Revision 1.2
2 – 22