STM32F101R4 STMicroelectronics, STM32F101R4 Datasheet - Page 65

• Manufacturer Part Number: STM32F101R4
• Description: Mainstream Access line, ARM Cortex-M3 MCU with 16 Kbytes Flash, 36 MHz CPU
• Manufacturer: STMicroelectronics

Specifications of STM32F101R4

• Core: ARM 32-bit Cortex™-M3 CPU
• Peripherals Supported: timers, ADC, SPIs, I2Cs and USARTs
• Conversion Range: 0 to 3.6 V
• Systick Timer: 24-bit downcounter

STM32F101x4, STM32F101x6
Equation 1: R
The formula above
error below 1/4 of LSB. Here N = 12 (from 12-bit resolution).
Table 43.
1. Guaranteed by design, not tested in production.
Table 44.
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-
3. Based on characterization, not tested in production.
1.5
7.5
13.5
28.5
41.5
55.5
71.5
239.5
Symbol
R
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.
EO
EG
ED
ET
EL
AIN
<
------------------------------------------------------------- - R
f
T
ADC
Total unadjusted error
Offset error
Gain error
Differential linearity error
Integral linearity error
s
R
(cycles)
ADC accuracy - limited test conditions
×
AIN
AIN
C
(Equation
ADC
Parameter
max for f
max formula:
T
S
×
ln
(
1) is used to determine the maximum external impedance allowed for an
2
ADC
N
+
Doc ID 15058 Rev 5
0.11
0.54
0.96
2.04
2.96
3.96
5.11
17.1
2
)
= 14 MHz
–
f
f
V
T
Measurements made after
ADC calibration
ADC
PCLK2
ADC
A
DDA
= 25 °C
= 14 MHz, R
(1)
= 3 V to 3.6 V
t
S
= 28 MHz,
Test conditions
(µs)
INJ(PIN)
AIN
(1) (2)
and Σ I
< 10 kΩ,
INJ(PIN)
0.4
5.9
11.4
25.2
37.2
50
NA
NA
Electrical characteristics
in
±1.3
±0.5
±0.7
±0.8
Typ
±1
Section 5.3.12
R
AIN
max (kΩ)
Max
±1.5
±1.5
±1.5
±1
±2
(3)
does not
Unit
LSB
65/79