STM32L471RG datasheet(183/218 Pages) STMICROELECTRONICS

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STM32L471xx

Electrical characteristics

199

6.3.27

FSMC characteristics

Unless otherwise specified, the parameters given in Table 88 to Table 101 for the FMC

interface are derived from tests performed under the ambient temperature, fHCLK frequency

and VDD supply voltage conditions summarized in Table 22, with the following configuration:

•

Output speed is set to OSPEEDRy[1:0] = 11

•

Capacitive load C = 30 pF

•

Measurement points are done at CMOS levels: 0.5VDD

Refer to Section 6.3.14: I/O port characteristics for more details on the input/output

characteristics.

Asynchronous waveforms and timings

Figure 36 through Figure 39 represent asynchronous waveforms and Table 88 through

Table 95 provide the corresponding timings. The results shown in these tables are obtained

with the following FMC configuration:

•

AddressSetupTime = 0x1

•

AddressHoldTime = 0x1

•

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

•

BusTurnAroundDuration = 0x0

In all timing tables, the THCLK is the HCLK clock period.

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