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STM32H743xI Electrical characteristics

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6.3.17 FMC characteristics

Unless otherwise specified, the parameters given in Table 63 to Table 76 for the FMC

interface are derived from tests performed under the ambient temperature, f

rcc_c_ck

frequency and V

supply voltage conditions summarized in Table 23: General operating

conditions, with the following configuration:

• Output speed

is set to OSPEEDRy[1:0] = 11

• Measurement points are done at CMOS levels: 0.5V

Refer to Section 6.3.15: I/O port characteristics for more details on the input/output

characteristics.

Asynchronous waveforms and timings

Figure 22 through Figure 25 represent asynchronous waveforms and Table 63 through

Table 70 provide the corresponding timings. The resu

lts shown in these tables are obtained

with the following FMC co

nfiguration:

• Add

ressSetupTime = 0x1

• AddressHoldTime = 0x1

• DataSetupTime = 0x1 (except for asynchronous NWAIT mode, DataSetupTime = 0x5)

• BusTurnAroundDuration = 0x0

• Capcitive load CL = 30 pF

In all timing tables, the T

KERCK

is the fmc_ker_ck clock period.

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