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STM32F427AI 数据表(PDF) 147 Page - STMicroelectronics

部件名 STM32F427AI
功能描述  32b Arm® Cortex®-M4 MCUFPU, 225DMIPS, up to 2MB Flash/2564KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 com. interfaces, camera & LCD-TFT
PDF  240 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32F427AI 数据表(HTML) 147 Page - STMicroelectronics

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DS9405 Rev 12
147/240
STM32F427xx STM32F429xx
Electrical characteristics
197
Note:
Refer to the I2S section of the RM0090 reference manual for more details on the sampling
frequency (FS).
fMCK, fCK, and DCK values reflect only the digital peripheral behavior. The values of these
parameters might be slightly impacted by the source clock precision. DCK depends mainly
on the value of ODD bit. The digital contribution leads to a minimum value of
(I2SDIV/(2*I2SDIV+ODD) and a maximum value of (I2SDIV+ODD)/(2*I2SDIV+ODD). FS
maximum value is supported for each mode/condition.
tv(WS)
WS valid time
Master mode
0
6
ns
th(WS)
WS hold time
Master mode
0
-
tsu(WS)
WS setup time
Slave mode
1
-
th(WS)
WS hold time
Slave mode
0
-
tsu(SD_MR)
Data input setup time
Master receiver
7.5
-
tsu(SD_SR)
Slave receiver
2
-
th(SD_MR)
Data input hold time
Master receiver
0
-
th(SD_SR)
Slave receiver
0
-
tv(SD_ST)
th(SD_ST)
Data output valid time
Slave transmitter (after enable edge)
-
27
tv(SD_MT)
Master transmitter (after enable edge)
-
20
th(SD_MT)
Data output hold time
Master transmitter (after enable edge)
2.5
-
1. Evaluated by characterization.
2. The maximum value of 256xFs is 45 MHz (APB1 maximum frequency).
Table 64. I2S dynamic characteristics(1) (continued)
Symbol
Parameter
Conditions
Min
Max
Unit



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