[Diy_efi] oopic2 based controller

[bill.shurvinton at nokia.com]

Have a look at the megasquirt. Has 4 timers so a little better suited. =
Sequential still tricky but doable (Are you sure you NEED sequential).

Not clued up on all the bigger ones, but hitachi and motorola do a lot =
of automotive biased MCUs so are a good starting point.

-----Original Message-----
From: ext Bino Lardo [mailto:binolardo at hotmail.com]
Sent: 21 August 2002 12:47
To: diy_efi at diy-efi.org
Subject: RE: [Diy_efi] oopic2 based controller


do you have another idea of a microcontroller for cheap? and for the =
fuel=20
spark table it could be smaller.


From: <bill.shurvinton at nokia.com>
>Reply-To: diy_efi at diy-efi.org
>To: <diy_efi at diy-efi.org>
>Subject: RE: [Diy_efi] oopic2 based controller
>Date: Wed, 21 Aug 2002 08:38:20 +0100
>
>But it only has 3 timers, which would mean that you need a hunk of =
support=20
>circuitry to do sequential. DIS would be a challenge as well.
>
>Also there is not enough memory for a 16*16 fuel and spark table unless =
you=20
>set spark as a nibble.
>
>Like I say, a bit of requirements gathering helps a lot.
>
>Bill
>
>-----Original Message-----
From: ext huw scourfield [mailto:huw.scourfield at lineone.net]
>Sent: 21 August 2002 00:02
>To: diy_efi at diy-efi.org
>Subject: Re: [Diy_efi] oopic2 based controller
>
>
>16f877 runs at 5Mhz, which gives 0.2 microseconds per "step", no =
problem
>with resolution there. Memory and timers also are not a problem, but =
the
>lack of maths functions are a bit of a pain. Hence interpolation and 16 =
bit
>calculations are not easy!
>     Huw
>
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