From a quick search I think tBUF is defined by the I2C-bus specification, and is the "Bus free time between a STOP and START condition". tBUF should be a minimum of 4.7 microseconds in I2C standard-mode, and a minimum of 1.3 microseconds in I2C fast-mode. Note that there is errata USCI26 in the MSP430F5438A Device Erratasheet SLAZ290T:
↧