Datasheet

Electrical characteristics STM32F103xC, STM32F103xD, STM32F103xE
106/143 DS5792 Rev 13
5.3.18 CAN (controller area network) interface
Refer to Section 5.3.14: I/O port characteristics for more details on the input/output alternate
function characteristics (CAN_TX and CAN_RX).
5.3.19 12-bit ADC characteristics
Unless otherwise specified, the parameters given in Table 5 9 are preliminary values derived
from tests performed under ambient temperature, f
PCLK2
frequency and V
DDA
supply
voltage conditions summarized in Table 10.
Note: It is recommended to perform a calibration after each power-up.
Table 59. ADC characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
DDA
Power supply - 2.4 - 3.6 V
V
REF+
Positive reference voltage - 2.4 - V
DDA
V
V
REF-
Negative reference voltage - 0 V
I
VREF
Current on the V
REF
input
pin
- - 160
(1)
220 µA
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
(3)
-
0 (V
SSA
or V
REF-
tied to ground)
-V
REF+
V
R
AIN
(2)
External input impedance
See Equation 1 and
Table 60 for details
--50κΩ
R
ADC
(2)
Sampling switch resistance - - - 1 κΩ
C
ADC
(2)
Internal sample and hold
capacitor
---8pF
t
CAL
(2)
Calibration time
f
ADC
= 14 MHz 5.9 µs
-831/f
ADC
t
lat
(2)
Injection trigger conversion
latency
f
ADC
= 14 MHz - - 0.214 µs
---3
(4)
1/f
ADC
t
latr
(2)
Regular trigger conversion
latency
f
ADC
= 14 MHz - - 0.143 µs
---2
(4)
1/f
ADC
t
S
(2)
Sampling time
f
ADC
= 14 MHz 0.107 - 17.1 µs
- 1.5 - 239.5 1/f
ADC
t
STAB
(2)
Power-up time - 0 0 1 µs
t
CONV
(2)
Total conversion time
(including sampling time)
f
ADC
= 14 MHz 1 - 18 µs
-
14 to 252 (t
S
for sampling +12.5 for
successive approximation)
1/f
ADC