Posted on March 31, 2008 at 13:59I have noticed there is a significant delay between the time a byte is loaded into the SSCTB and when the SSCBSY flag is set.
Running an ST10F276 at 40 MHz, I notice a 2 micro second delay.
Here is the code:
SSCTB = 0xAA;
//Delay before checking the SSCBSY Flag
DELAY_FOR_SSCBSY_FLAG(); //This is a number of of _nop() to provide at least a 2 micro second delay
//Now that we waited for the delay time, wait for the SSCBSY flag to clear
while (SSCBSY)
{
_nop();
}
//now the SSCBSY flag is clear, read a value from the receive buffer
return ((BYTE)SSCRB);
What is the WORST CASE delay time I need to wait after the SSCTB is loaded for the SSCBSY flag to be asserted?
