Post by thread:[PIC]:\how to know what is the PIC MIPS?

Hi, All PicListers! I just wonder. how to calculate the MIPS of a pic? Let said, I have a 16F84 runs at 10MHz, then what is the pic maximum instructions can execute in one second (MIPS)??? Thank you. -- http://www.piclist.com hint: To leave the PICList spam_OUTpiclist-unsubscribe-requestTakeThisOuTmitvma.mit.edu

Microchip PIC = Clock MHz divided by 4 Ubicom SX = Clock Mhz divided by a little more than 1 --- James Newton (PICList Admin #3) .....jamesnewtonKILLspam@spam@piclist.com 1-619-652-0593 PIC/PICList FAQ: http://www.piclist.com or .org {Original Message removed}

> > Hi, All PicListers! > > I just wonder. how to calculate the MIPS of a pic? In general for PIC 16 and 17 series chips the MIPS rate is one quarter the clock rate. > > Let said, I have a 16F84 runs at 10MHz, then what is the pic maximum > instructions can execute in one second (MIPS)??? 2.5 million per second. Note that some instructions take two slots to execute. So the actual instruction rate is less than that. BAJ -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestKILLspammitvma.mit.edu

Hi, At 10MHz, you are doing 10 million clock cycles per second. Each instruction takes four clock cycles (except for those that don't) so your absolute maximum is 2.5MIPS. You will never actually achieve this as you cannot execute 2.5 million instructions without some branch instructions, and these take 2 cycles. So the answer is: Between 1.25 and 2.5 Mips, depending on the number of branches. 1.25 Mips for every instruction as a branch. 2.5 Mips for no branches. Martin {Quote hidden}> Hi, All PicListers! > > I just wonder. how to calculate the MIPS of a pic? > > Let said, I have a 16F84 runs at 10MHz, then what is the pic maximum > instructions can execute in one second (MIPS)??? > > Thank you. > > -- > http://www.piclist.com hint: To leave the PICList > .....piclist-unsubscribe-requestKILLspam.....mitvma.mit.edu > > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads