AS5048 datasheet(3/30 Pages) AMSCO

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AS5048A/AS5048B

Magnetic Rotary Encoder

14-bit Angular Position Sensor

Datasheet

Contents

GENERAL DESCRIPTION .................................................................................................................. 1

KEY FEATURES & BENEFITS.................................................................................................................. 1

APPLICATIONS ..................................................................................................................................... 1

BLOCK DIAGRAM ................................................................................................................................. 1

PIN CONFIGURATION ................................................................................................................. 5

1.1

PIN DESCRIPTION ........................................................................................................................ 5

ELECTRICAL CHARACTERISTICS ............................................................................................ 6

2.1

ABSOLUTE MAXIMUM RATINGS.................................................................................................... 6

2.2

OPERATING CONDITIONS ............................................................................................................. 7

2.3

DC/AC CHARACTERISTICS FOR DIGITAL INPUTS AND OUTPUTS ....................................................... 7

2.4

ELECTRICAL SYSTEM SPECIFICATIONS .......................................................................................... 8

2.5

GLOBAL TIMING CONDITIONS ...................................................................................................... 8

FUNCTIONAL DESCRIPTION...................................................................................................... 9

OPERATION .................................................................................................................................. 9

4.1

SUPPLY VOLTAGE CONFIGURATION .............................................................................................. 9

4.2

SPI INTERFACE ......................................................................................................................... 10

4.2.1

SPI Interface Signals (4-Wire Mode, Wire_mode = 1) .......................................................... 10

4.2.2

SPI Timing ......................................................................................................................... 11

4.2.3

SPI Connection to the Host UC ........................................................................................... 12

4.2.4

SPI Communication Command Package .............................................................................. 13

4.2.5

Read Package (Value Read from AS5048A) ......................................................................... 14

4.2.6

Write Data Package (Value Written to AS5048A) ................................................................. 14

4.2.7

Register Map SPI ............................................................................................................... 15

4.2.8

SPI Interface Commands .................................................................................................... 16

4.3

I²C INTERFACE .......................................................................................................................... 19

4.3.1

I²C Electrical Specification ................................................................................................ 19

4.3.2

I²C Timing ......................................................................................................................... 20

4.3.3

Register Table .................................................................................................................... 21

4.3.4

I²C Slave address ............................................................................................................... 22

4.4

PWM INTERFACE ...................................................................................................................... 22

PACKAGE DRAWINGS AND MARKINGS ................................................................................. 23

5.1.1

Assembly Lot Code ............................................................................................................. 23

APPLICATION INFORMATION ................................................................................................. 25

6.1

PROGRAMMING OF THE AS5048 ................................................................................................. 25

6.1.1

Programming of the zero position ....................................................................................... 25

6.1.2

Programming sequence with verification ............................................................................. 25

6.2

DIAGNOSTIC FUNCTIONS OF THE AS5048 .................................................................................... 25

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