
STM32F051x
Electrical characteristics
Figure 20. I/O AC characteristics definition
90%
50%
10%
10%
50%
90%
EXT ERNAL
O UTP UT
ON 50pF
tr(I O)out
tr(I O)out
T
Maximum fr equency is achieved if (tr + tf) ≤ 2/3) T and if the duty cycle is (45-55%)
when loaded by 50pF
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