STM32F101C8 STMicroelectronics, STM32F101C8 Datasheet - Page 67

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STM32F101C8

Manufacturer Part Number
STM32F101C8
Description
Mainstream Access line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 36 MHz CPU
Manufacturer
STMicroelectronics
Datasheet

Specifications of STM32F101C8

Peripherals Supported
timers, ADC, SPIs, I2Cs and USARTs
Conversion Range
0 to 3.6 V
Systick Timer
24-bit downcounter
STM32F101x8, STM32F101xB
Equation 1: R
AIN
<
R
------------------------------------------------------------- - R
AIN
×
f
C
ADC
The formula above
error below 1/4 of LSB. Here N = 12 (from 12-bit resolution).
Table 43.
R
AIN
T
(cycles)
s
1.5
7.5
13.5
28.5
41.5
55.5
71.5
239.5
1. Guaranteed by design, not tested in production.
Table 44.
ADC accuracy - limited test conditions
Symbol
ET
Total unadjusted error
EO
Offset error
EG
Gain error
ED
Differential linearity error
EL
Integral linearity error
1. ADC DC accuracy values are measured after internal calibration.
2. ADC Accuracy vs. Negative Injection Current: Injecting negative current on any of the standard (non-
robust) analog input pins should be avoided as this significantly reduces the accuracy of the conversion
being performed on another analog input. It is recommended to add a Schottky diode (pin to ground) to
standard analog pins which may potentially inject negative current.
Any positive injection current within the limits specified for I
affect the ADC accuracy.
3. Based on characterization, not tested in production.
max formula:
T
S
ADC
N
+
2
×
(
)
ln
2
ADC
(Equation
1) is used to determine the maximum external impedance allowed for an
(1)
max for f
= 14 MHz
ADC
t
(µs)
S
0.11
0.54
0.96
2.04
2.96
3.96
5.11
17.1
Parameter
Test conditions
f
= 28 MHz,
PCLK2
f
= 14 MHz, R
ADC
V
= 3 V to 3.6 V
DDA
T
= 25 °C
A
Measurements made after
ADC calibration
Doc ID 13586 Rev 14
Electrical characteristics
R
max (kΩ)
AIN
0.4
5.9
11.4
25.2
37.2
50
NA
NA
(1) (2)
Typ
Max
±1.3
±2
< 10 kΩ,
±1
±1.5
AIN
±0.5
±1.5
±0.7
±1
±0.8
±1.5
and ΣI
in
Section 5.3.12
INJ(PIN)
INJ(PIN)
(3)
Unit
LSB
does not
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