ST STM32L4x6 User Manual

Analog-to-digital converters (ADC) RM0351
502/1693 DocID024597 Rev 3
actual VDDA voltage using the internal reference voltage, resulting in the following formula:
Where:
• VREFINT_CAL is the VREFINT calibration value
• ADCx_DATA is the value measured by the ADC on channel x (right-aligned)
• VREFINT_DATA is the actual VREFINT output value converted by the ADC
• FULL_SCALE is the maximum digital value of the ADC output. For example with 12-bit
resolution, it will be 2
12
- 1 = 4095 or with 8-bit resolution, 2
8
- 1 = 255.
Note: If ADC measurements are done using an output format other than 12 bit right-aligned, all the
parameters must first be converted to a compatible format before the calculation is done.
16.4 ADC interrupts
For each ADC, an interrupt can be generated:
• After ADC power-up, when the ADC is ready (flag ADRDY)
• On the end of any conversion for regular groups (flag EOC)
• On the end of a sequence of conversion for regular groups (flag EOS)
• On the end of any conversion for injected groups (flag JEOC)
• On the end of a sequence of conversion for injected groups (flag JEOS)
• When an analog watchdog detection occurs (flag AWD1, AWD2 and AWD3)
• When the end of sampling phase occurs (flag EOSMP)
• When the data overrun occurs (flag OVR)
• When the injected sequence context queue overflows (flag JQOVF)
Separate interrupt enable bits are available for flexibility.
V
CHANNELx
3.0 V VREFINT_CAL ADCx_DATA××
VREFINT_DATA FULL_SCALE×
--------------------------------------------------------------------------------------------------------
=
Table 97. ADC interrupts per each ADC
Interrupt event Event flag Enable control bit
ADC ready ADRDY ADRDYIE
End of conversion of a regular group EOC EOCIE
End of sequence of conversions of a regular group EOS EOSIE
End of conversion of a injected group JEOC JEOCIE
End of sequence of conversions of an injected group JEOS JEOSIE
Analog watchdog 1 status bit is set AWD1 AWD1IE
Analog watchdog 2 status bit is set AWD2 AWD2IE
Analog watchdog 3 status bit is set AWD3 AWD3IE
End of sampling phase EOSMP EOSMPIE
Overrun OVR OVRIE
Injected context queue overflows JQOVF JQOVFIE

ST STM32L4x6 Specifications

General

Brand	ST
Model	STM32L4x6
Category	Microcontrollers
Language	English