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STM32F427AI Datasheet(PDF) 156 Page - STMicroelectronics

Part # STM32F427AI
Description  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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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F427AI Datasheet(HTML) 156 Page - STMicroelectronics

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Electrical characteristics
STM32F427xx STM32F429xx
156/240
DS9405 Rev 12
Table 73 gives the list of Ethernet MAC signals for the RMII and Figure 48 shows the
corresponding timing diagram.
Figure 48. Ethernet RMII timing diagram
Table 74 gives the list of Ethernet MAC signals for MII and Figure 48 shows the
corresponding timing diagram.
ai15667b
RMII_REF_CLK
RMII_TX_EN
RMII_TXD[1:0]
RMII_RXD[1:0]
RMII_CRS_DV
td(TXEN)
td(TXD)
tsu(RXD)
tsu(CRS)
tih(RXD)
tih(CRS)
Table 73. Dynamics characteristics: Ethernet MAC signals for RMII(1)
Symbol
Parameter
Condition
Min
Typ
Max
Unit
tsu(RXD) Receive data setup time
1.71 V < VDD < 3.6 V
1.5
-
-
ns
tih(RXD)
Receive data hold time
0
-
-
tsu(CRS) Carrier sense setup time
1
-
-
tih(CRS)
Carrier sense hold time
1
-
-
td(TXEN)
Transmit enable valid delay
time
2.7 V < VDD < 3.6 V
8
10.5
12
1.71 V < VDD < 3.6 V
8
10.5
14
td(TXD)
Transmit data valid delay time
2.7 V < VDD < 3.6 V
8
11
12.5
1.71 V < VDD < 3.6 V
8
11
14.5
1. Evaluated by characterization results.



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