AS5045-ASST datasheet(24/47 Pages) AMSCO

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[v2-01] 2017-Jul-13

AS5045 − Detailed Description

Non-Permanent Programming

It is also possible to re-configure the AS5045 in a

non-permanent way by overwriting the OTP register.

This procedure is essentially a “Write Data” sequence

(see Figure 23) 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

Electrical System Specifications).

See Application Note AN5000-20 for further information.

Figure 23:

Programming Access – Write Data (Section of Figure 24)

Figure 24:

Complete Programming Sequence

CCW

Z11

Z10

PWM

dis

Mag

Comp

PWM

half

PWM and status

bit modes

Zero Position

tDatain valid

t Prog enable

CSn

Prog

CLKPROG

t Datain

tclk

Data

CSn

Prog

CLKPROG

7.5 V

VDD

tLoadPROG

t PROG finished

Write Data

Power Off

Programming Mode

t PROG

t PrgH

VProgOff

t PrgR

116

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