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'[PIC]:\how to know what is the PIC MIPS?'
2001\03\22@204104 by William

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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.

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2001\03\22@204649 by jamesnewton

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Microchip PIC = Clock MHz divided by 4

Ubicom SX = Clock Mhz divided by a little more than 1

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2001\03\22@204654 by Byron A Jeff

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>
> 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

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2001\03\23@033958 by Martin Hill

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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


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