67F687 by Silicon Systems?

[Robert Levin]

The DIY reference list at http://www.dcc.edu/vettenet/efi_ref.txt
says the 67F687 MSIC device is made by Silicon Systems in Tustin, CA.

But the Silicon Systems web page at http://www.ssi1.com shows only
parts used in data storage devices, such as hard disks.  Is the
67F687, or similar part, still available?


>From the reference list:
>67F687
>     The 67F687 is a high performance MSICs ( Mixed Signal Integrated Circuit )
>designed to work with a microprocessor in an engine management system.
Using two
>sensor inputs (crank and cam), the 67F687 tracks engine position through
one or 
>two complete revolutions with a resolution of 0.25 degrees. Designed to be
>flexible, the 67F687 will accept a variety of sensor types and pulse patterns.
>It generates ignition and injection output pulses based on position and time
>parameters supplied by the host microprocessor, relieving it of many of the
real
>time interrupt routines associated with these tasks. These outputs can directly
>drive power devices to actuate automotive ignition coils and fuel injectors. A
>sense input from each device allows individual diagnostics, short circuit
>protection and ignition coil current limiting. A timer, which measures coil 
>charge time at the ignition sense inputs, enhances closed loop dwell control.
>Communication with a host microprocessor is through a parallel data and address
>bus. A general purpose parallel I/O port offers level sensitive input and
output
>capability, in addition to edge detect inputs and PWM outputs.
>Silicon Systems
>Automotive Products
>14351 Myford Road
>Tustin, CA 92680  USA
>Attn: Tony Anderson

thanks,
Robert Levin