Microcontroller with 4 USARTs and 40 pins
Sebastian Garcia email (remove spam text)
| 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
See also: www.piclist.com/techref/io/serials.htm?key=usart
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