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L9300 Datasheet(PDF) 159 Page - STMicroelectronics |
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L9300 Datasheet(HTML) 159 Page - STMicroelectronics |
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159 / 178 page  17.3.2 Valve drivers electrical characteristics 5.5 V ≤ VBATP ≤ 19 V; 5.5 V ≤ VSx ≤ 19 V; -40 °C ≤ Tj ≤ 175 °C unless otherwise noticed. All voltages refer to GND pin. Table 66. Valve drivers electrical characteristics Symbol Parameter Test condition Min Typ Max Unit Pin Solenoid Drivers ADC_sampling_freq Sampling frequency Guaranteed by scan -5% 8 5% MHz IADC_test ADC test current 29 30 31 µA ADC_LSB ADC resolution 0.89 0.9375 0.985 µA ADC_check Tolerable mismatch between functional and safety ADCs Guaranteed by scan -13 13 LSB LOADx t_ADC_check Self test duration Guaranteed by scan, all channels monitored 0.1 0.25 0.3 ms LOADx t_BIST Solenoid Logic BIST duration Guaranteed by scan 1 5 ms LOADx t_EEPROM EEPROM download time Time to read entire content of EEPROM from CP_uv release Guaranteed by scan 1 3.5 4 ms t_EEPROM_sol EEPROM download time solenoid Time to read calibration data after 1 configuration change request in a channel pair (ex. CH0/1 LL --> LH) Guaranteed by scan 1 3.5 4 ms t_EEPROM_sol2 EEPROM download time solenoid_2 Time to read calibration data after both configurations change in a channel pair (ex. CH0/1 LL --> HH) Guaranteed by scan 1 7 8 ms tmask PWM check masking time Solenoid ON state, Guaranteed by design 2 200 µs LOADx t_an_chop_clock analog chopping period Guaranteed by scan 250 300 350 µs 17.3.3 Valve drivers error handling Table 67. Valve driver error handling Type of error Detection condition Action Clear SPI flag Restart condition ADC check Tristate condition Solenoid A/D self check bit set in Exceptions registers Clear on read N.A. Logic BIST fail Tristate condition Faulted channel kept tristated until fault is present. Solenoid Logic BIST Status bit (10:9) available on Exceptions registers Clear on read Clear diagnostic bits and set DRVENAx bits in SolEnDRV registers CRC check analog On state Trimming bits masked with default configuration, warning flags EEPROM Trimming data CRC (18:17) set in SERVFLT register Clear on POR Restart of the device or masking of CRC result with Mask CRC error on Trimming data bit (5) in SERVFLTMSK register CRC check Solenoid On state Trimming bits masked with default configuration, warning flags CRC error (14:13) set in Exceptions registers Clear on POR Re-enable of the solenoid channels or masking of CRC result with CRC Error Mask (14:13) bits in DRVFLTMSK registers Off state diagnostic self test Tristate, diagnostic disabled Warning flag Solenoid Diag Self Test (OFF state) (8:7) in Exceptions registers Clear on read N.A. PWM check On state Warning flag Comparators Self Test (Active) status (12:11) in Exceptions registers Clear on read N.A. L9300 Functional safety DS12258 - Rev 5 page 159/178 |
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