3) For each requirement below suggest an interface that would be best for meeting that specific requirement. asynch serial, SPI, I2C, CAN, USB. Justify your answer based on the physical and protocol characteristics of the interface. a) The microcontroller and the sensor need to be between 10 and 40 m apart, b) It has been decided to add a new sensor to the board that needs to interface to the onboard microcontroller. The product needs to go to market immediately so the time needed to change the firmware should be as short as possible. c) The microcontroller in the product needs a fast, reliable connection to a PC to allow for data transfer and firmware updates. d) A low pin-count microcontroller needs to be interfaced to an EEPROM and three different sensors. There are only 5 pins still available on the microcontroller (the rest are already in use for power, oscillator, etc.)
3) For each requirement below suggest an interface that would be best for meeting that specific
requirement. asynch serial, SPI, I2C,
CAN, USB. Justify your answer based on the physical and protocol characteristics of the
interface.
a) The microcontroller and the sensor need to be between 10 and 40 m apart,
b) It has been decided to add a new sensor to the board that needs to interface to the
onboard microcontroller. The product needs to go to market immediately so the time
needed to change the firmware should be as short as possible.
c) The microcontroller in the product needs a fast, reliable connection to a PC to allow for
data transfer and firmware updates.
d) A low pin-count microcontroller needs to be interfaced to an EEPROM and three
different sensors. There are only 5 pins still available on the microcontroller (the rest
are already in use for power, oscillator, etc.)
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