Analog-to-digital converters (ADC) RM0351
430/1693 DocID024597 Rev 3
16.3.2 Pins and internal signals
Table 84. ADC internal signals
Internal signal name
Signal
type
Description
EXT[15:0] Inputs
Up to 16 external trigger inputs for the regular conversions (can
be connected to on-chip timers).
These inputs are shared between the ADC master and the ADC
slave.
JEXT[15:0] Inputs
Up to 16 external trigger inputs for the injected conversions (can
be connected to on-chip timers).
These inputs are shared between the ADC master and the ADC
slave.
ADC1_AWDx_OUT
ADC2_AWDx_OUT
ADC3_AWDx_OUT
Output
Internal analog watchdog output signal connected to on-chip
timers. (x = Analog watchdog number 1,2,3)
V
TS
Input Output voltage from internal temperature sensor
V
REFINT
Input Output voltage from internal reference voltage
V
BAT
Input
supply
External battery voltage supply
Table 85. ADC pins
Name Signal type Comments
V
REF+
Input, analog reference
positive
The higher/positive reference voltage for the ADC,
1.62 V V
REF+
V
DDA
V
DDA
Input, analog supply
Analog power supply equal V
DDA
:
1.62 V V
DDA
3.6 V
V
REF-
Input, analog reference
negative
The lower/negative reference voltage for the ADC,
V
REF-
=
V
SSA
V
SSA
Input, analog supply ground Ground for analog power supply equal to V
SS
V
INP
[18:0]
Positive input analog
channels for each ADC
Connected either to external channels: ADC_INi or
internal channels.
V
INN
[18:0]
Negative input analog
channels for each ADC
Connected to V
REF-
or external channels: ADC_INi-1
ADCx_IN16:1 External analog input signals
Up to 16 analog input channels (x = ADC number =
1,2 or 3):
– 5 fast channels
– 11 slow channels