ST STM32L4+ Series Reference Manual page 613

RM0432
21.2 ADC main features
• High-performance features
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Oversampler
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Low-power features
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• Number of external analog input channels per ADC
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In addition, there are several internal dedicated channels
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Start-of-conversion can be initiated:
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Up to 2 ADCs which can operate in dual mode:
ADC1 is connected to 16 external channels + 3 internal channels
ADC2 is connected to 16 external channels + 2 internal channels
12, 10, 8 or 6-bit configurable resolution
ADC conversion time is independent from the AHB bus clock frequency
Faster conversion time by lowering resolution
Manage single-ended or differential inputs
AHB slave bus interface to allow fast data handling
Self-calibration
Channel-wise programmable sampling time
Up to four injected channels (analog inputs assignment to regular or injected
channels is fully configurable)
Hardware assistant to prepare the context of the injected channels to allow fast
context switching
Data alignment with in-built data coherency
Data can be managed by DMA for regular channel conversions
Data can be routed to DFSDM for post processing
4 dedicated data registers for the injected channels
16-bit data register
Oversampling ratio adjustable from 2 to 256
Programmable data shift up to 8-bit
Speed adaptive low-power mode to reduce ADC consumption when operating at
low frequency
Allows slow bus frequency application while keeping optimum ADC performance
Provides automatic control to avoid ADC overrun in low AHB bus clock frequency
application (auto-delayed mode)
Up to 5 fast channels from GPIO pads
Up to 11 slow channels from GPIO pads
The internal reference voltage (V
The internal temperature sensor (V
The V monitoring channel (V
BAT
DAC1 and DAC2 internal channels, connected to ADC2
By software for both regular and injected conversions
By hardware triggers with configurable polarity (internal timers events or GPIO
input events) for both regular and injected conversions
), connected to ADC1
REFINT
), connected to ADC1
TS
/3), connected to ADC1
BAT
RM0432 Rev 6
Analog-to-digital converters (ADC)
613/2301
724