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andrej strancar
andrej strancar
Visitor II
April 26, 2017
Solved

m24sr device for data transfer in RF->I2C direction, bandwidth?

Posted on April 26, 2017 at 23:14

Hi, I'd like to use a m24sr device for data transfer in RF->I2C direction (upgrading firmware on a MCU using a NFC phone). Are there any estimates about what bandwidth can be achieved?

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JP Miller
JP MillerBest answer
ST Employee
January 22, 2018
Posted on January 22, 2018 at 09:45

Dear Customer,

It is difficult to precisely answer bandwidth question as it will depend on the overhead of the accesses of the OS stack on the RF Reader side and the MCU on the I2C side.

RF is capable of handling data at 106kbps max. And the I2C bus SCL clock frequency is  up to 1Mhz. 

We advise to use the maximum buffer size authorized for doing the transfer on I2C and RF side to maximize the overall system bandwidth

Have a good day.

Regards,

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1 reply

JP Miller
JP MillerBest answer
ST Employee
January 22, 2018
Posted on January 22, 2018 at 09:45

Dear Customer,

It is difficult to precisely answer bandwidth question as it will depend on the overhead of the accesses of the OS stack on the RF Reader side and the MCU on the I2C side.

RF is capable of handling data at 106kbps max. And the I2C bus SCL clock frequency is  up to 1Mhz. 

We advise to use the maximum buffer size authorized for doing the transfer on I2C and RF side to maximize the overall system bandwidth

Have a good day.

Regards,

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