What is the maximum UART speed on the LPC210x devices?
The baud-rate is calculated as: pclk/(16* divisor); The divisor is 16 bits long; the maximum for this formula is pclk/16 – in case you do not divide cclk in order to get pclk, result is cclk/16. The pclk = cclk/4 value is selected to save power, not because the UART clock has to be limited. The max UART speed is 60MHz /16 = 3.75 Mbit/sec.
