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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]
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STM32F427AI bảng dữ liệu(HTML) 152 Page - STMicroelectronics

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Electrical characteristics
STM32F427xx STM32F429xx
152/231
DocID024030 Rev 6
Table 72 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 73 gives the list of Ethernet MAC signals for MII and Figure 48 shows the
corresponding timing diagram.
Figure 49. Ethernet MII timing diagram
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)
ai15667
Table 72. 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
0
10.5
12
1.71 V < VDD < 3.6 V
10.5
14
td(TXD)
Transmit data valid delay time
2.7 V < VDD < 3.6 V
0
11
12.5
1. Guaranteed by characterization results.
MII_RX_CLK
MII_RXD[3:0]
MII_RX_DV
MII_RX_ER
td(TXEN)
td(TXD)
tsu(RXD)
tsu(ER)
tsu(DV)
tih(RXD)
tih(ER)
tih(DV)
ai15668
MII_TX_CLK
MII_TX_EN
MII_TXD[3:0]



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