AS5043

Data Sheet – Programming the AS5043

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Revision 1.80

16 – 36

Table 5: Digital Range Selector Programming Option

Output

Range1

Output

Range0

Mode

Note

0

0

0

0°

256

90°

18 0°

2 7 0°

360°

0

angle*)

360° angular ra nge (default)

1023

512

768

1024

default mode,

analog resolution= 10bit

(1024 steps) over 360°

analog step size:

1LSB = 0.35°

0

1

0

0°

90 °

18 0°

2 7 0°

360°

0

angle

180° angular ra nge

1023

256

512

768

1024

analog resolution= 10bit

(1024 steps) over 180°

Analog step size:

1LSB = 0.175°

1

0

0

0°

90 °

18 0°

2 7 0°

360°

0

angle

90° angular range

1023

256

512

768

1024

analog resolution= 10bit

(1024 steps) over 90°

Analog step size:

1LSB = 0.088°

1

1

0

0°

90 °

18 0°

225°

360°

0

angle

45° angular range

511

256

512

640

1024

128

45°

analog resolution=

9 bit (512 steps) over 45°

Analog step size:

1LSB = 0.088°

*) Note: the resolution on the digital SSI interface is always 10bit (0.35°/step) over 360°, independent on analog mode

12.3 Repeated OTP Programming

Although a single AS5043 OTP register bit can be programmed only once (from 0 to 1), it is possible to program other,

unprogrammed bits in subsequent programming cycles. However, a bit that has already been programmed should not be

programmed twice. Therefore it is recommended that bits that are already programmed are set to “0” during a

programming cycle.

12.4 Non-permanent Programming

It is also possible to re-configure the AS5043 in a non-permanent way by overwriting the OTP register.

This procedure is essentially a “Write Data” sequence (see Figure 10) without a subsequent OTP programming cycle.

The “Write Data” sequence may be applied at any time during normal operation. This configuration remains set while the

power supply voltage is above the power-on reset level (see 19.5).

See Application Note AN5000-20 for further information.

12.5 Digital-to-Analog Converter (DAC)

The DAC has a resolution of 10bit (1024 steps) and can be configured for the following options.