Table 147. Main Adc Features - ST STM32G4 Series Reference Manual

RM0440
•
Low-power features
–
–
–
• Several external analog input channel per ADC
–
–
•
In addition, there are several internal dedicated channels
–
–
–
–
–
–
–
–
•
Start-of-conversion can be initiated:
–
–
•
Conversion modes
–
–
–
–
• Dual ADC mode for ADC1, ADC2, ADC3 and ADC4
•
Interrupt generation at ADC ready, the end of sampling, the end of conversion (regular
or injected), end of sequence conversion (regular or injected), analog watchdog 1, 2 or
3 or overrun events
•
3 analog watchdogs per ADC
–
•
ADC input range: V
Figure 79
20.3 ADC implementation
Dual mode
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
The OPAMP1 internal output connected to ADC1
The OPAMP2 and OPAMP3 internal outputs connected to ADC2
The OPAMP3 internal output connected to ADC3
The OPAMP6 internal output connected to ADC4
The OPAMP4 and OPAMP5 internal outputs connected to ADC5
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
Each ADC can convert a single channel or can scan a sequence of channels
Single mode converts selected inputs once per trigger
Continuous mode converts selected inputs continuously
Discontinuous mode
Watchdog can perform filtering to ignore out-of-range data
≤ V
REF–
shows the block diagram of one ADC.

Table 147. Main ADC features

References
), connected to ADC1, 3, 4 and 5
REFINT
), connected to ADC1 and 5
TS
/3), connected to ADC1, 3 and 5
BAT
≤ V
IN REF+
ADC1
RM0440 Rev 1
Analog-to-digital converters (ADC)
ADC2 ADC3
X (coupled X (coupled
together) together)
ADC4 ADC5
-
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