Question

(c) 4 marks On the diagram below draw the connections for the SPI bus to enable the MCU to talk to either of the port expanders independently MCU AIN1/PD7 23S17 Bp AIN0/PD6 T1/PD5 B TO/PD4 CS SCK SI SO INT1/PD3 A INTO/PD2 TxD/PD1 A RxD/PDO RESET/PC6 SCL/PC5 SDA/PC4 ADC3/PC3 23S17 ADC2/PC2 ADC1/PC1 ADC0/PCO B7 CS SCK SI SO SCK/PB4 A MISO/PB4 MOSI/PB3 A, SS/PB2 PCINT1/PB1 PCINTO/PB0

Answer 1

(c) 4 marks On the diagram below draw the connections for the SPI bus to enable the MCU to talk to either of the port expanders independently. MCU AIN1/PD7 AINO/PD6 T1/PD5 23S17 Bp Br TO/PD4 CS SCK SI SO INT1/PD3 A INTO/PD2 TxD/PD1 A RxD/PD0 RESET/PC6 SCL/PC5 SDA/PC4 ADC3/PC3 23S17 BC ADC2/PC2 ADC1/PC1 ADCO/PCO B7 CS SCK SI SO SCK/PB4 Ap MISO/PB4 MOSI/PB3 SS/PB2 AT PCINT1/PB1 PCINTO/PB0

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