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Electrical characteristics STM32F446xC/E
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6.3.26 FMC characteristics
Unless otherwise specified, the parameters given in Table  86 to Table 93 for the FMC 
interface are derived from tests performed under the ambient temperature, f
HCLK 
frequency 
and V
DD
 supply voltage conditions summarized in Table 15, with the following configuration: 
• Output speed is set to OSPEEDRy[1:0] = 10
• Capacitance load C = 30 pF
• Measurement points are done at CMOS levels: 0.5V
DD
Refer to Section 6.3.17: I/O port characteristics for more details on the input/output 
characteristics.
Asynchronous waveforms and timings
Figure 50 through Figure 53 represent asynchronous waveforms and Table 86 through 
Table 93 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 T
HCLK
 is the HCLK clock period.
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