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Original question:

BQ76930: BQ76930

BQ78350-R1A: Communication between BQ78350-R1A and MSP430FR6989

Jose Jiménez
Prodigy 60 points
Part Number: BQ78350-R1A
Other Parts Discussed in Thread: BQ76930, MSP430FR6989, EV2400

Hi,

I am building a BMS with the BQ76930 and the BQ7835-R1A, communicated between them. But I want to communicate with this module from the main microcontroller (MSP430FR6989). So for the communication between BQ7835-R1A and MSP430FR6989 I have several questions: 

- 1.- Can I make the connection directly between the SMBus pins of the BQ7835-R1A and the I2C pins of the MSP430FR6989 or I need extra hardware or software to do that? Do I need to adapt the pull up voltage level?

- 2.- Can I connect the pull up resistor of the SMBus (BQ7835-R1A) to a 3V3 level?

- 3.- Can I use the SPI pins of MSP430FR6989 to communicate with the SMBus of the BQ7835-R1A? If it is possible how can I do it? Do I need specific hardware?

Thanks in advance.