Tessolve Semiconductor Applications Engineer Interview Questions and Answers

CMOS inverter is a type of logic gate that converts input signals into their complementary outputs.

• CMOS inverter consists of a PMOS transistor and an NMOS transistor connected in series.

• When input is high, PMOS conducts and NMOS is off, resulting in output low.

• When input is low, NMOS conducts and PMOS is off, resulting in output high.

• CMOS technology is widely used in digital integrated circuits due to its low power con

Verilog code for sequence detector

• Use state machines to detect the desired sequence

• Define states for each part of the sequence

• Use combinational logic to transition between states

• Implement the Verilog code using if-else statements and always blocks

Yes, a simple button debounce circuit can be created using a resistor and a capacitor.

• Use a resistor and a capacitor in series with the button to create a low-pass filter.

• Connect the output of the filter to a Schmitt trigger to clean up the signal.

• Adjust the values of the resistor and capacitor to achieve the desired debounce time.

• Example: Use a 10k ohm resistor and a 0.1uF capacitor for a debounce time of 10ms.

Program to read button input and remove glitches in embedded C.

• Use a state machine to debounce the button input.

• Implement a delay to filter out glitches.

• Consider using interrupts for efficient button handling.

Designing a flop using gates

• A flop is a fundamental building block in digital circuits used for storing and synchronizing data

• It can be designed using basic logic gates such as AND, OR, and NOT gates

• The most common flop design is the D flip-flop, which has a data input (D), a clock input (CLK), and an output (Q)

• The D flip-flop can be implemented using a combination of gates, such as an AND gate, an OR gate, and a NOT g...read more

A D flip-flop can be implemented using NAND gates.

• A D flip-flop is a sequential logic circuit that stores a single bit of data.

• It has two inputs: D (data) and CLK (clock) and two outputs: Q (output) and Q' (complement of output).

• A D flip-flop changes its output state based on the input D and the clock signal.

• The D flip-flop can be implemented using NAND gates by connecting them in a specific configuration.

• The circuit d...read more