STM32F302xx/STM32F303xx
Functional overview
3.12.3
V
battery voltage monitoring
BAT
This embedded hardware feature allows the application to measure the V
battery voltage
BAT
using the internal ADC channel ADC_IN17. As the V
voltage may be higher than V
,
BAT
DDA
and thus outside the ADC input range, the V
pin is internally connected to a bridge
BAT
divider by 2. As a consequence, the converted digital value is half the V
voltage.
BAT
3.12.4
OPAMP reference voltage (VOPAMP)
Every OPAMP reference voltage can be measured using a corresponding ADC internal
channel: VOPAMP1 connected to ADC1 channel 15, VOPAMP2 connected to ADC2
channel 17, VOPAMP3 connected to ADC3 channel 17, VOPAMP4 connected to ADC4
channel 17.
Doc ID 023353 Rev 5
21/133
STMICROELECTRONICS [ ST ]
