Regenerative active pullup circuit (one of two needed) with values chosen for the worst-case combination shown in Figure 1

Authors	Stephen Woodward
Main Document	Article «I²C active pullup is power thrifty»
Description	Figure 2
File Format / Size	PDF / 12 Kb
Document Language	English

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Article «I²C active pullup is power thrifty»

Figure 1. I²C bus speed inversely affects maximum effective pullup resistance. Source: (
Figure 2. Regenerative active pullup circuit (one of two needed) with values chosen for the worst-case combination shown in Figure 1
Figure 3. Active pullup waveforms and 4-step sequence labeled within the image

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