Edson wrote:

| I'm looking at an Atmel datasheet. It says the AT89C55 can do 33MHz,but
|how much clocks does it takes to execute one instruction? Why few
|manufacturers put this information on the datasheets??? 33Mhz equals to
|33MIPS? Or 8,25MPIS? Or 2,75 MIPS???


If it don't say anything more, it may be the classic 8051's: one machine
cycle is formed by twuelve clock cycles, and the instruction cycle
depends on the particular instruction.


If You want more speed enhacement look at Dallas MCS-51 compatible, hi-speed
micros.

Regards,

S.-