Question

1. (9pts) Compare SPI, I2C and UART in a table. Create a row/column for these items: number of wires, duplex/half-duplex, addressing method, master scheme, bit rate, number of devices connected, data rate.

2. (7pts) SPI: Draw the two possible configurations for one master device and 3 slave devices. Label all wire connections with their names.

3. (7pts) I2C: Draw the configuration for one master device and 3 slave devices. Label all wire connections with their names.

4. (7pts) I2C: Show the clock and data stream for a master device reading 1 data byte (0xE) from a thermometer slave device that has address (0x56).

Answer 1

Answer :- 1) The table has been shown below-

Protocol / Properties	No. of wires	Duplex/Half Duplex	Addressing Method	Master Scheme	Bit Rate	No. of devices	Data Rate
SPI	4	Full Duplex	No	One Master	9 Mbps	no. of SS lines	25 Mbps
I2C	2	Half Duplex	Yes	Multi Master	3.4 Mbps	127	3.4 Mbps
UART	2	Half Duplex	No	One Master		1	20 kbps

Answer :- 2) The two different methods in SPI has been shown below-

Answer :- 3) The I2C system with one master and 3 salves has been shown below-