[Diy_efi] EFI system data

[Andrew Brownsword]

Its SPI input is capable of up to 2 MBits/sec, and the PW can be changed
with a single byte so you could change the value roughly 200K times/sec (or
with a latency of about 0.005ms).

on 7/24/02 9:59 PM, Kent Martin at kentmartin at froggy.com.au wrote:
> timing would be a problem when using a serial link I think!
> 
> ----- Original Message -----
> From: "Andrew Brownsword" <asword at telus.net>
> To: <diy_efi at diy-efi.org>
> Sent: Thursday, July 25, 2002 11:44 AM
> Subject: Re: [Diy_efi] EFI system data
> 
> 
>> Alternatively you could use something like the Harris CDP68HC68W1, which
> is
>> an 8-pin SPI-based PWM generator.
>> 
>> on 7/24/02 2:21 PM, Tomas Sokorai Sch. at tsokorai at xperts.cl wrote:
>>> I guess a PIC could be used to make the PWM for P&H and as a bonus could
> be
>>> used to "select" which injector to pulse and for how much time. So the
> EFI uP
>>> only has to say "who" and "how long" and the rest is taken care by the
>>> "intelligent" inj. driver. That would be a nice project to make public,
> so
>>> the other DIY-ers can just "glue" their uP and software and not reinvent
> the
>>> wheel. The flexibility, price, simplicity of the circuit and
> availability of
>>> the parts would make this solution a very good one.


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