MSP430FR59941: MSP430FR59941

Dmitri B

Prodigy 10 points

Part Number: MSP430FR59941

Tool/software:

I have a blank (not programmed) unit and I would like to test it by reading device ID of the device.

As I understood the I2C address is 0x48 and the register address is 0x01A04. Is this right?

My questions are:

what pins I can communicate with the device via I2C? As I see in the datasheet there are 4 I2C channels, UCB[0-3]. Can I use all of the channels, or I need any strapping or configurations?
After writing 0x48 will I receive ACK or NACK?
Can I write immediately the 0x01A04 or I need to write byte by byte and wait for ACK? I mean write 0x1A get ACK and then 0x04 and get ACK.
How I read the data? It is the same byte -> ACK -> byte

4 months ago

0 David Schultz 4 months ago

Guru 24805 points

It would seem that you are describing the bootloader I2C interface. (See slau550) Which has its own specific requirements.

0 Dmitri B 3 months ago in reply to David Schultz

Prodigy 10 points

Hi.

I didn't write you that I need to test the unit on ICT machine, so I need to write vector.

Can you please refer me to the document slau550 if it can solve me the problem and I can write the vector based on it?

0 David Schultz 3 months ago in reply to Dmitri B

Guru 24805 points

The I2C ports require running software to initialize and operate them. In an unprogrammed device that is the bootloader code. If that isn't running, they are inoperative.

0 Dmitri B 3 months ago in reply to David Schultz

Prodigy 10 points

What can be solution for me if I want to access the unprogrammed device and read/write any register? I would like just to verify that the component is alive, and I have proper component on my board.

0 David Schultz 3 months ago in reply to Dmitri B

Guru 24805 points

JTAG and programmer/debugger.

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MSP430FR59941: MSP430FR59941