Switched-pullup circuit where the analog switch is activated at high bus voltages only, paralleling an additional resistor with the standard pullup

Download PDF

Other Materials from the Main Document

• Article «Non-linear pullup for multi-rate I²C buses»
• Figure 1. Switched-pullup circuit where the analog switch is activated at high bus voltages only, paralleling an additional resistor with the standard pullup
• Figure 2. A schematic of simulated I²C drivers, pullup resistors and bus capacitances, without (old) and with (new) connection to the autonomous non-linear pullup circuit
• Figure 3. A comparison of the performances of standard (old) and an enhanced (new) I²C bus signals. The signals CLR, CLK, and Q swing between ground and +3.3 V are shown scaled for clarity purposes