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STM32H750VB bảng dữ liệu(PDF) 195 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  32-bit Arm® Cortex®-M7 480MHz MCUs, 128 Kbyte Flash, 1 Mbyte RAM, 46 com. and analog interfaces, crypto
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STM32H750VB bảng dữ liệu(HTML) 195 Page - STMicroelectronics

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DS12556 Rev 5
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STM32H750VB STM32H750ZB STM32H750IB STM32H750XB
Electrical characteristics (rev Y)
311
Figure 56. ULPI timing diagram
Ethernet characteristics
Unless otherwise specified, the parameters given in Table 112, Table 113 and Table 114 for
SMI, RMII and MII are derived from tests performed under the ambient temperature,
frcc_c_ck frequency summarized in Table 22: General operating conditions, with the following
configuration:
Output speed is set to OSPEEDRy[1:0] = 10
Capacitive load C = 20 pF
Measurement points are done at CMOS levels: 0.5VDD.
Refer to Section 6.3.15: I/O port characteristics for more details on the input/output
characteristics.
Table 112 gives the list of Ethernet MAC signals for the SMI and Figure 57 shows the
corresponding timing diagram.
Table 112. Dynamics characteristics: Ethernet MAC signals for SMI(1)
1. Guaranteed by characterization results.
Symbol
Parameter
Min
Typ
Max
Unit
tMDC
MDC cycle time(2.5 MHz)
400
400
403
ns
Td(MDIO) Write data valid time
1
1.5
3
tsu(MDIO) Read data setup time
8
-
-
th(MDIO)
Read data hold time
0
-
-
Clock
Control In
(ULPI_DIR,
ULPI_NXT)
data In
(8-bit)
Control out
(ULPI_STP)
data out
(8-bit)
tDD
tDC
tHD
tSD
tHC
tSC
ai17361c
tDC



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