ST STM32F410 User Manual

Analog-to-digital converter (ADC) RM0401
218/771 RM0401 Rev 3
The total number of conversions in the injected group must be written in the L[1:0] bits
in the ADC_JSQR register.
If the ADC_SQRx or ADC_JSQR registers are modified during a conversion, the current
conversion is reset and a new start pulse is sent to the ADC to convert the newly chosen
group.
Temperature sensor, V
REFINT
and V
BAT
internal channels
• The temperature sensor is internally connected to ADC1_IN18 and ADC1_IN16
channels which is shared with VBAT. Only one conversion, temperature sensor or
VBAT, must be selected at a time. When the temperature sensor and VBAT conversion
are set simultaneously, only the VBAT conversion is performed.
The internal reference voltage VREFINT is connected to ADC1_IN17.
The V
BAT
channel is connected to ADC1_IN18 and ADC1_IN16 channels. It can also be
converted as an injected or regular channel.
11.3.4 Single conversion mode
In Single conversion mode the ADC does one conversion. This mode is started with the
CONT bit at 0 by either:
• setting the SWSTART bit in the ADC_CR2 register (for a regular channel only)
• setting the JSWSTART bit (for an injected channel)
• external trigger (for a regular or injected channel)
Once the conversion of the selected channel is complete:
• If a regular channel was converted:
– The converted data are stored into the 16-bit ADC_DR register
– The EOC (end of conversion) flag is set
– An interrupt is generated if the EOCIE bit is set
• If an injected channel was converted:
– The converted data are stored into the 16-bit ADC_JDR1 register
– The JEOC (end of conversion injected) flag is set
– An interrupt is generated if the JEOCIE bit is set
Then the ADC stops.
11.3.5 Continuous conversion mode
In continuous conversion mode, the ADC starts a new conversion as soon as it finishes one.
This mode is started with the CONT bit at 1 either by external trigger or by setting the
SWSTRT bit in the ADC_CR2 register (for regular channels only).
After each conversion:
• If a regular group of channels was converted:
– The last converted data are stored into the 16-bit ADC_DR register
– The EOC (end of conversion) flag is set
– An interrupt is generated if the EOCIE bit is set
Note: Injected channels cannot be converted continuously. The only exception is when an injected
channel is configured to be converted automatically after regular channels in continuous

ST STM32F410 Specifications

General

Brand	ST
Model	STM32F410
Category	Microcontrollers
Language	English