12-Bit Adc Characteristics; Table 50. Adc Characteristics; Figure 23. Recommended Nrst Pin Protection - STMicroelectronics STM32F031F4 Manual

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STM32F031x4 STM32F031x6
1. The external capacitor protects the device against parasitic resets.
2. The user must ensure that the level on the NRST pin can go below the V
Table 49: NRST pin
6.3.16

12-bit ADC characteristics

Unless otherwise specified, the parameters given in
from tests performed under ambient temperature, f
conditions summarized in
Note: It is recommended to perform a calibration after each power-up.
Symbol Parameter
Analog supply voltage for
V
DDA
ADC ON
Current consumption of
I
DDA (ADC)
the ADC
f ADC clock frequency
ADC
(2)
f Sampling rate
S
(2)
External trigger frequency
f
TRIG
V
Conversion voltage range
AIN
(2)
R External input impedance
AIN
Sampling switch
(2)
R
ADC
resistance
Internal sample and hold
(2)
C
ADC
capacitor
(2)
Calibration time
t
CAL
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Figure 23. Recommended NRST pin protection

characteristics. Otherwise the reset will not be taken into account by the device.
Table 18: General operating

Table 50. ADC characteristics

V
(1) DD
See
Table 51
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PCLK
Conditions
-
= V = 3.3 V
DDA
-
-
f = 14 MHz
ADC
-
-
Equation 1 and
for details
-
-
f = 14 MHz
ADC
-
DocID025743 Rev 3
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Electrical characteristics
max level specified in
IL(NRST)
Table 50 are preliminary values derived
frequency and V
DDA
conditions.
Min Typ
2.4 -
- 0.9
0.6 -
0.05 -
- -
- -
0 -
- -
- -
- -
5.9
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supply voltage
Max Unit
3.6 V
- mA
14 MHz
1 MHz
823 kHz
17 1/f
ADC
V V
DDA
50 k
1 k
8 pF
µs
1/f
ADC
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