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STM32F411RET6 bảng dữ liệu(PDF) 113 Page - STMicroelectronics

tên linh kiện STM32F411RET6
Giải thích chi tiết về linh kiện  ARM® Cortex®-M4 32b MCUFPU, 125 DMIPS, 512KB Flash, 128KB RAM, USB OTG FS, 11 TIMs, 1 ADC, 13 comm. interfaces
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STM32F411RET6 bảng dữ liệu(HTML) 113 Page - STMicroelectronics

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STM32F411xC STM32F411xE
Electrical characteristics
123
Figure 39. USB OTG FS timings: definition of data signal rise and fall time
6.3.20
12-bit ADC characteristics
Unless otherwise specified, the parameters given in Table 65 are derived from tests
performed under the ambient temperature, fPCLK2 frequency and VDDA supply voltage
conditions summarized in Table 14.
Table 64. USB OTG FS electrical characteristics(1)
1. Guaranteed by design.
Driver characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
tr
Rise time(2)
2. Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB
Specification - Chapter 7 (version 2.0).
CL = 50 pF
420
ns
tf
Fall time(2)
CL = 50 pF
4
20
ns
trfm
Rise/ fall time matching
tr/tf
90
110
%
VCRS
Output signal crossover voltage
1.3
2.0
V
Table 65. ADC characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDDA
Power supply
VDDA −VREF+ < 1.2 V
1.7(1)
-3.6
V
VREF+
Positive reference voltage
1.7(1)
-VDDA
V
fADC
ADC clock frequency
VDDA = 1.7(1) to 2.4 V
0.6
15
18
MHz
VDDA = 2.4 to 3.6 V
0.6
30
36
MHz
fTRIG(2) External trigger frequency
fADC = 30 MHz,
12-bit resolution
-
-
1764
kHz
--
17
1/fADC
VAIN
Conversion voltage range(3)
0 (VSSA or VREF-
tied to ground)
-VREF+
V
RAIN(2)
External input impedance
See Equation 1 for
details
--
50
k
Ω
RADC(2)(4) Sampling switch resistance
-
-
6
k
Ω
CADC(2)
Internal sample and hold
capacitor
-4
7
pF



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