Datasheet

DS9773 Rev 4 67/93
STM32F030x4/x6/x8/xC Electrical characteristics
75
Figure 22. Recommended NRST pin protection
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
IL(NRST)
max level specified in
Table 49: NRST pin characteristics. Otherwise the reset will not be taken into account by the device.
6.3.16 12-bit ADC characteristics
Unless otherwise specified, the parameters given in Table 50 are preliminary values derived
from tests performed under ambient temperature, f
PCLK
frequency and V
DDA
supply voltage
conditions summarized in
Table 21: General operating conditions.
Note: It is recommended to perform a calibration after each power-up.
MS19878V4
R
PU
V
DD
Internal reset
External
reset circuit
(1)
NRST
(2)
Filter
0.1 μF
(3)
Table 50. ADC characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
DDA
Analog supply voltage for
ADC ON
- 2.4 - 3.6 V
I
DDA (ADC)
Current consumption of
the ADC
(1)
V
DD
= V
DDA
= 3.3 V - 0.9 - mA
f
ADC
ADC clock frequency - 0.6 - 14 MHz
f
S
(2)
Sampling rate - 0.05 - 1 MHz
f
TRIG
(2)
External trigger
frequency
f
ADC
= 14 MHz - - 823 kHz
---171/f
ADC
V
AIN
Conversion voltage range - 0 - V
DDA
V
R
AIN
(2)
External input impedance
See Equation 1 and
Table 51 for details
--50kΩ
R
ADC
(2)
Sampling switch
resistance
---1kΩ
C
ADC
(2)
Internal sample and hold
capacitor
---8pF