Electrical characteristics
STM32F103xx
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Figure 22.
USB timings: definition of data signal rise and fall time
5.3.16 CAN
(controller
area network) interface
Refer to I/O port characteristics for more details on the input/output alternate function char-
acteristics (CANTX and CANRX).
5.3.17 12-bit
ADC
characteristics
Unless otherwise specified, the parameters given in
are derived from tests
performed under ambient temperature, f
PCLK2
frequency and V
DDA
supply voltage
conditions summarized in
Note:
It is recommended to perform a calibration after each power-up.
Table 38.
USB: Full speed electrical characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
Driver characteristics
t
r
Rise time
(1)
1.
Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB
Specification - Chapter 7 (version 2.0).
C
L
= 50 pF
4
20
ns
t
f
Fall Time
(1)
C
L
= 50 pF
4
20
ns
t
rfm
Rise/ fall time matching
t
r
/t
f
90
110
%
V
CRS
Output signal crossover voltage
1.3
2.0
V
ai14137
tf
Differen tial
Data L ines
VS S
VCRS
tr
Crossover
points
Table 39.
ADC characteristics
(1)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
DDA
ADC power supply
2.4V
3.6V
V
V
REF+
Positive reference voltage
2.0
V
DDA
V
f
ADC
ADC clock frequency
0.6
14
MHz
f
S
Sampling rate
TBD
0.05
1
MHz
f
TRIG
External trigger frequency
f
ADC
= 14 MHz
823
kHz
17
1/f
ADC
V
AIN
Conversion voltage range
V
SSA
V
DDA
V