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AN4266 Datasheet(PDF) 41 Page - STMicroelectronics

Part # AN4266
Description  Safety application guide for SPC56xL70xx family
PDF  76 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4266 Datasheet(HTML) 41 Page - STMicroelectronics

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AN4266
Functional safety requirements for application software
Doc ID 024283 Rev 2
41/76
Figure 9.
Software BISTs to test the multiplexing circuitry (ADC_SWTEST_TEST1)
Note:
Implementation hint: Presampling can be enabled on a per channel basis through the
ADC_x_PSR0 register.
ADC_x_PSCR[PREVAL0] selects which reference voltage is used to precharge/discharge
the ADC internal capacitor.
ADC_x_PSCR[PRECONV] register shall be 0 (See “Analog-to-Digital Converter (ADC)”
chapter in the SPC56xL70xx Reference Manual for details on the presampling feature).
ADC
Reference
value 1
pins
ADC
Reference
value 1
pins
ADC
ADC
Presampling phase
Open detection:
Conversion phase



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