MLX90365 Datasheet, PDF (25/35 Pages) Melexis Microelectronic Systems – Triaxis® Position Sensor IC

MLX90365
Triaxis® Position Sensor IC
14.7.3. Field Strength Diagnostic
(i) FIELDTHRESHLOW
Defines the field strength limit under which a fault is reported.
The run-time field strength estimation (FieldStrength) is compared to 2⁸ * FIELDTHRESHLOW.
The sensitivity of FIELDTHRESHLOW is typically 1mT/LSB. By default it is programmed to 10mT
(ii) FIELDTHRESHHIGH
Defines the field strength limit under which a fault is reported. See above for more details.
14.7.4. PWM Diagnostic
(i) DC_FAULT
Defines the duty-cycle that is outputted in case of diagnostic reporting.
(ii) WEAKMAGTHRESH
Defines the threshold on the field strength which determines the weak magnet condition; when
WEAKMAGTHRESH = 0, there is no reporting of weak magnet condition.
(iii) DC_FTL
Defines the duty-cycle that is outputted in case of Field Too Low; the Field Too Low Diagnostic is stronger
than the Weak Magnet Diagnostic, from 0% till 255% by steps of (100/256)%
(iv) DC_WEAK
Defines the duty-cycle that is outputted in case of Weak Magnet, from 0% till 255% by steps of
(100/256)%
14.7.5. Diagnostic Features
It is recommended to enable the diagnostic features for safety critical applications.
Refer to Application_note_Diagnostic_Behavior_90365 for EE_CRC_Enable function description and for
Diagnostic features which can be enabled by user.
14.8. EEPROM endurance
Although the EEPROM is used for Calibration Data Storage (similarly to an OTPROM), the MLX90365
embedded EEPROM is qualified to guarantee an endurance of minimum 1000 write cycles at 125˚C for
(engineering/calibration purpose).
MLX90365
Rev. 5.7
Page 25 of 35
Datasheet
Jan. 22, 16