STM32F051X4 STMICROELECTRONICS [STMicroelectronics], STM32F051X4 Datasheet - Page 74

• Manufacturer Part Number: STM32F051X4
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STM32F051x
Electrical characteristics
Figure 20. I/O AC characteristics definition
90%
10%
50%
50%
90%
10%
t r(I O)out
EXT ERNAL
t r(I O)out
OUTPUT
T
ON 50pF
Maximum frequency is achieved if (t r + t f ) ≤ 2/3)T and if the duty cycle is (45-55%)
when loaded by 50pF
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Doc ID 022265 Rev 3
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