RM0016 Analog/digital converter (ADC)
Doc ID 14587 Rev 8 411/449
24 Analog/digital converter (ADC)
24.1 Introduction
ADC1 and ADC2 are 10-bit successive approximation Analog to Digital Converters. They
have up to 16 multiplexed input channels (the exact number of channels is indicated in the
datasheet pin description). A/D Conversion of the various channels can be performed in
single, and continuous modes.
ADC1 has extended features for scan mode, buffered continuous mode and analog
watchdog. Refer to the datasheet for information about the availability of ADC1 and ADC2 in
specific product types.
24.2 ADC main features
These features are available in ADC1 and ADC2.
● 10-bit resolution
● Single and continuous conversion modes
● Programmable prescaler: f
MASTER
divided by 2 to 18
● External trigger option using external interrupt (ADC_ETR) or timer trigger (TRGO)
● Analog zooming (in devices with V
REF
pins)
● Interrupt generation at End of Conversion
● Data alignment with in-built data coherency
● ADC input range: V
SSA
≤ V
IN
≤ V
DDA
24.3 ADC extended features
These features are available in ADC1.
● Buffered continuous conversion mode
(1)
●
Scan mode for single and continuous conversion
● Analog watchdog with upper and lower thresholds
● Interrupt generation at analog watchdog event
The block diagrams of ADC1 and ADC2 are shown in Figure 158 and Figure 159
1. Data buffer size is product dependent (10 x 10 bits or 8 x 10 bits). Please refer to the datasheet.
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