Week 6 Self Assessment Quiz Questions 1.[2] Describe in your own words what a comparator does. 2.[2] What does the comparator consist of (internally)? 3.[2] If the "+" terminal is at 2v and the "-" terminal is at 1v, what is the output level of the comparator? 4.[2] Of what use is the bandgap reference to the comparator? 5.[8] Configure the comparator to: Generate an interrupt when a rising edge on PE3 exceeds 1.26 volts Show all registers that need to be setup 6.[2] Of what use is a differential input for the ADC? 7.[2] What is special about the AVcc pin and what should you do it to provide for the best operation of the ADC? 8.[3] Explain the difference between free running and single shot conversion. 9.[3] Explain in your own words how successive approximation ADC conversion is done. 10.[3] Explain what the ADC noise reduction mode does. 11.[3] Give a definition for an asynchronous signal. 12.[4] How does the synchronous circuitry in the AVR capture a asynchronous serial signal? 13.[4] How does the UART frame a byte? 14.[3] What parameters must be specified to the UART module to successfully carry out serial communication. 15.[4] Given the data byte 0x4d, what would the parity bit need to be to make it satisfy odd parity? 16.[3] What is a framing error? 17.[4] Explain in your own words how a charge pump works. 18.[6] Draw a timing diagram for the word 0x58, with eight data bits, odd parity, one start bit and one stop bit as it exits the transmitting AVR.