The circuit of Fig. 3.5B is used 8 times over to connect 8 switches to 8 mbed digital input. The pull-up resistors have a value of 10 kΩ and are connected to the mbed supply of 3.3 V. What current is consumed due to this circuit configuration when all switches are closed simultaneously? If this current drain must be limited to 0.5 mA, to what value must the pull-up resistors be increased? Reflect on the possible impact of pull-up resistors in low-power circuits.

Transcribed Image Text:

(B) R V Vs Figure 3.5