STM32F042xx
All I2C SDA and SCL I/Os embed an analog filter. Refer to the table below for the analog
filter characteristics:
Symbol
t
AF
1. Guaranteed by design, not tested in production.
2. Spikes with widths below t
3. Spikes with widths above t
Table 62. I2C analog filter characteristics
Parameter
Maximum pulse width of spikes
that are suppressed by the analog
filter
are filtered.
AF(min)
are not filtered
AF(max)
DocID025832 Rev 2
Electrical characteristics
(1)
Min
Max
(2)
(3)
50
260
Unit
ns
89/117
94
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