AS5045 12-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER

Revision 1.5

www.austriamicrosystems.com

Page 15 of 24

CCW

Z11

Z10

Z9

Z8

Z7

Z6

Z5

Z4

Z3

Z2

Z1

Z0

PW M

dis

Mag

Com p

EN

PW M

half

EN

P W M and status

bit m odes

Zero P osition

CS n

Prog

1

16

8

see text

Figure 10: Programming access – write data (section of Figure 11)

Data

CSn

Prog

7.5V

VDD

Write Data

Power Off

Programming Mode

0V

116

Figure 11: Complete programming sequence

AS5045 Demoboard

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

1 MagINCn

MagDECn

NC

NC

NC

Mode

VSS

Prog_DI

DO

CLK

CSn

PWM

NC

NC

VDD3V3

VDD5V

AS5045

IC1

+

7

2

3

4

5

6

1

10n

1µF

µC

Cap only required for

OTP programming

GND

PROG

CSN

DO

CLK

5VUSB

VDD3V3

VSS

+

10µF

2

3

1

GND

VSS

VPROG

7.5 … 8.0V

only required for

OTP programming

connect to USB

interface on PC

For programming,

keep these 6 wires

as short as possible!

max. length = 2 inches (5cm)

22k

*see Text

3V3

Figure 12: OTP programming connection of AS5045 (shown with AS5045 demoboard)