AS5048 datasheet(4/30 Pages) AMSCO

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AS5048A/AS5048B

Magnetic Rotary Encoder

14-bit Angular Position Sensor

Datasheet

6.3

CHOOSING THE PROPER MAGNET ............................................................................................... 26

6.4

PHYSICAL PLACEMENT OF THE MAGNET ..................................................................................... 27

6.5

MAGNET PLACEMENT ................................................................................................................ 27

ORDERING INFORMATION ...................................................................................................... 28

REVISION HISTORY .................................................................................................................. 28

COPYRIGHTS.............................................................................................................................. 29

10 DISCLAIMER .............................................................................................................................. 29

List of Figures

FIGURE 1: PIN CONFIGURATION TSSOP14 ................................................................................................. 5

FIGURE 2: CONNECTIONS FOR 5V AND 3.3V SUPPLY VOLTAGES .................................................................. 9

FIGURE 3 SPI CONNECTION AS5048A WITH UC ...................................................................................... 10

FIGURE 4 SPI COMMAND/RESPONSE DATA FLOW .................................................................................... 10

FIGURE 5 SPI TIMING DIAGRAM ............................................................................................................. 11

FIGURE 6 SINGLE SLAVE MODE .............................................................................................................. 12

FIGURE 7 MULTIPLE SLAVE, N+3 WIRE (SEPARATE CHIPSELECT) ............................................................. 12

FIGURE 8 DAISY CHAIN, 4 WIRE ............................................................................................................ 13

FIGURE 9 READ COMMAND ................................................................................................................... 16

FIGURE 10 WRITE COMMAND ............................................................................................................... 16

FIGURE 11 CLEAR ERROR FLAG COMMAND ........................................................................................ 17

FIGURE 12 NOP COMMAND ................................................................................................................... 18

FIGURE 13 SLAVE ADDRESS CONSTRUCTION ............................................................................................ 22

FIGURE 14 PWM FORMAT...................................................................................................................... 23

FIGURE 15 PACKAGE MARKING .............................................................................................................. 23

FIGURE 16: TYPICAL MAGNET AND MAGNETIC FLUX DISTRIBUTION ........................................................... 26

FIGURE 17: DEFINED CHIP CENTER AND MAGNET DISPLACEMENT RADIUS .................................................. 27

FIGURE 18: VERTICAL PLACEMENT OF THE MAGNET................................................................................. 27

List of Tables

TABLE 1: PIN DESCRIPTION TSSOP14 ....................................................................................................... 5

TABLE 2 ABSOLUTE MAXIMUM RATINGS .................................................................................................. 6

TABLE 3: OPERATING CONDITION............................................................................................................. 7

TABLE 4:DC/AC CHARACTERISTICS ......................................................................................................... 7

TABLE 5 SYSTEM SPECIFICATION .............................................................................................................. 8

TABLE 6 GLOBAL TIMING CONDITIONS ...................................................................................................... 8

TABLE 7 SPI TIMING CHARACTERISTICS ................................................................................................. 11

TABLE 8 SPI COMMAND PACKAGE ......................................................................................................... 13

TABLE 9 SPI READ PACKAGE .................................................................................................................. 14

TABLE 10 SPI WRITE DATA PACKAGE...................................................................................................... 14

TABLE 11 SPI REGISTER MAP ................................................................................................................. 15

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