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STM32F427AI bảng dữ liệu(PDF) 152 Page - STMicroelectronics

tên linh kiện STM32F427AI
Giải thích chi tiết về linh kiện  ARM Cortex-M4 32b MCUFPU, 225DMIPS, up to 2MB Flash/2564KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 comm. interfaces, camera & LCD-TFT
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STM32F427AI bảng dữ liệu(HTML) 152 Page - STMicroelectronics

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Electrical characteristics
STM32F427xx STM32F429xx
152/238
DocID024030 Rev 9
Figure 46. ULPI timing diagram
Table 69. USB HS clock timing parameters(1)
1. Guaranteed by design.
Symbol
Parameter
Min
Typ
Max
Unit
fHCLK value to guarantee proper operation of
USB HS interface
30
-
-
MHz
FSTART_8BIT
Frequency (first transition)
8-bit ±10%
54
60
66
MHz
FSTEADY
Frequency (steady state) ±500 ppm
59.97
60
60.03
MHz
DSTART_8BIT
Duty cycle (first transition)
8-bit ±10%
40
50
60
%
DSTEADY
Duty cycle (steady state) ±500 ppm
49.975
50
50.025
%
tSTEADY
Time to reach the steady state frequency and
duty cycle after the first transition
--
1.4
ms
tSTART_DEV
Clock startup time after the
de-assertion of SuspendM
Peripheral
-
-
5.6
ms
tSTART_HOST
Host
-
-
-
tPREP
PHY preparation time after the first transition
of the input clock
--
-
µs



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