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MSP430F2274: Simultaneous UART and SPI

Emmett Bradford
Prodigy 90 points
Part Number: MSP430F2274
Other Parts Discussed in Thread: MSP430F1612, DRV8842EVM,

Hello,

I am targeting the MSP430F2274CY, but breadboarding on the DRV8842EVM which has a MSP430F1612.

On the breadboard w/ MSP430F1612, I discovered each USART can only do one mode at a time.

For the MSP430F2274CY, I want to make sure that UCA0 and UCB0 are independent and I can run UART on USCI_A0 and SPI (master) on USCI_B0 simultaneously as shown in my attachment.

Is this true?

It's a little confusing because the family manual describes a USI, USCI and USART.

The device datasheet only mentions USCI_A0 and USCI_B0, which I take to mean there are no USI and USART in the device.

Is this true?

Thanks,

Emmett

  • +1
    TI__Guru 56685 points

    Hello,

    For USCI_Ax, it can be used in either UART or SPI.

    For USCI_Bx, it can be used for SPI or I2C.

    So if you have an instance of USCI_A and an instance of USCI_B, then you can have a UART and SPI at the same time. The MSP430F2274 has a single instance of USCI_A and USCI_B so this is possible with this device. 

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