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2.0 Hardware Description
NRST Pin Characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, RPU (see
Table 2-7
).
2.4.3.5 12-bit ADC Characteristics
The parameters given in
Table 2-11: ADC Characteristics
are derived from tests performed
under the ambient temperature and supply voltage ratings of the Pico Series.
Symbol
Parameter
Conditions
Min
Max
Unit
Typ
V
IL(NRST)
NRST Input low level voltage
-0.5
0.7
V
V
IH(NRST)
NRST Input high level voltage
2
V
DD
+0.5
V
hys(NRST)
NRST Schmitt trigger voltage hysteresis
mV
200
R
PU
Weak pull-up equivalent resistor
V
IN
=V
SS
30
50
k
Ω
40
V
NF
NRST Input pulse
300
ns
Table 2-10 NRST Pin Characteristics
Pico Series
Figure 2-3 Recommended NRST Pin Protection
Symbol
Parameter
Min
Max
Unit
V
AIN
Conversion voltage range
0
3.0
V
R
AIN
External input impedance
0
1.2
k
Ω
Table 2-11 12-bit ADC Characteristics
Symbol
Parameter
Test Conditions
Typ
Max
Unit
ET
Total unadjusted error
1.3
2
LSB
T
A
= 25
O
C
EO
Offset error
1
1.5
EG
Gain error
0.5
1.5
ED
Differential linearity error
0.7
1
EL
Integral linearity error
0.8
1.5
Table 2-12 ADC Accuracy
