AS5045 データシートの表示（PDF） - austriamicrosystems AG

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AS5045

12 Bit Programmable Magnetic Rotary Encoder

austriamicrosystems AG 

AS5045

Data Sheet

Table of Contents

1

General Description ................................................................................................................................ 1

2

Benefits................................................................................................................................................... 1

3

Key Features .......................................................................................................................................... 1

4

Applications ............................................................................................................................................ 1

5

Pinout ..................................................................................................................................................... 4

5.1 Pin Configuration .................................................................................................................................... 4

5.2 Pin Description........................................................................................................................................ 4

lid 6

Electrical Characteristics......................................................................................................................... 5

6.1 AS5045 Differences to AS5040 ............................................................................................................... 5

6.2 Absolute Maximum Ratings (non operating) ............................................................................................ 6

a 6.3 Operating Conditions .............................................................................................................................. 6

v 6.4 DC Characteristics for Digital Inputs and Outputs.................................................................................... 7

6.4.1 CMOS Schmitt-Trigger Inputs: CLK, CSn. (CSn = internal Pull-up).......................................................... 7

ill 6.4.2 CMOS / Program Input: Prog................................................................................................................... 7

6.4.3 CMOS Output Open Drain: MagINCn, MagDECn .................................................................................... 7

t 6.4.4 CMOS Output: PWM ............................................................................................................................... 7

G s 6.4.5 Tristate CMOS Output: DO ...................................................................................................................... 8

6.5 Magnetic Input Specification ................................................................................................................... 8

A t 6.6 Electrical System Specifications.............................................................................................................. 9

s n 6.7 Timing Characteristics............................................................................................................................10

6.7.1 Synchronous Serial Interface (SSI).........................................................................................................10

e 6.7.2 Pulse Width Modulation Output ..............................................................................................................11

m t 6.8 Programming Conditions ........................................................................................................................11

a n 7

Functional Description............................................................................................................................12

8

Mode Input Pin.......................................................................................................................................13

o 8.1 Synchronous Serial Interface (SSI) ........................................................................................................13

c 8.1.1 Data Content ..........................................................................................................................................14

8.1.2 Z-axis Range Indication (Push Button Feature, Red/Yellow/Green Indicator)..........................................14

l 8.2 Daisy Chain Mode ..................................................................................................................................15

a 9

Pulse Width Modulation (PWM) Output ..................................................................................................16

ic 9.1 Changing the PWM Frequency...............................................................................................................17

10

Analog Output ........................................................................................................................................17

11

Programming the AS5045 ......................................................................................................................18

n 11.1 Zero Position Programming....................................................................................................................18

h 11.2 Repeated OTP Programming .................................................................................................................18

11.3 Non-permanent Programming ................................................................................................................19

c 11.4 Analog Readback Mode .........................................................................................................................20

e 12

Alignment Mode .....................................................................................................................................21

T13

3.3V / 5V Operation ...............................................................................................................................22

14

Choosing the Proper Magnet..................................................................................................................23

14.1 Physical Placement of the Magnet .........................................................................................................24

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