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RM0351 Peripherals interconnect matrix
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10.3.12 From internal analog source to ADC (ADC1/ADC2/ADC3) and OPAMP
(OPAMP1/OPAM2)
Purpose
Internal temperature sensor (V
TS
) and V
BAT
monitoring channel are connected to
ADC1/ADC3 input channels.
Internal reference voltage (V
REFINT
) is connected to ADC1 input channels.
OPAMP1 and OPAMP2 outputs can be connected to ADC1 or ADC2 input channels through
the GPIO.
DAC1_OUT1 and DAC1_OUT2 outputs can be connected to ADC2 or ADC3 input channel.
DAC1_OUT1 can be connected to OPAMP1_VINP.
DAC1_OUT2 can be connected to OPAMP2_VINP.
This is according:
• Section 18.2: ADC main features
• Section 18.4.11: Channel selection (SQRx, JSQRx)
• Figure 68: ADC1 connectivity
• Figure 70: ADC3 connectivity
• Table 147: Operational amplifier possible connections
Active power mode
Run, Sleep, Low-power run, Low-power sleep.
10.3.13 From comparators (COMP1/COMP2) to timers
(TIM1/TIM2/TIM3/TIM8/TIM15/TIM16/TIM17)
Purpose
Comparators (COMP1/COMP2) output values can be connected to timers
(TIM1/TIM2/TIM3/TIM8/TIM15/TIM16/TIM17) input captures or TIMx_ETR signals.
The connection to ETR is described in Section 30.3.4: External trigger input.
Comparators (COMP1/COMP2) output values can also generate break input signals for
timers (TIM1/TIM8) on input pins TIMx_BKIN or TIMx_BKIN2 through GPIO alternate
function selection using open drain connection of IO, see Section 30.3.17: Bidirectional
break inputs.
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