ECU6 chip pinout

[Al Lipper]

Bob, the chips are identical.  Different companies use different names for
some of the pins - don't worry about the names and just hook it up the way
it is in the schematic.  the 74573 is the base version of the IC, the
74HC573 is the Hight-speed CMOS version.  Since the circuit uses a CMOS
CPU, you should use CMOS chips other places.  I don't know that the
High-speed option matters a whole lot, but it wouldn't be a bad idea.
Remember, the ECU6 circuit has been built and tested - it works as it is.
You might need some extra filtering for your particular application, but
the digital part is pretty solid.

					Al

At 07:38 PM 6/24/99 +0000, you wrote:
>
>
>
>>From: Al Lipper <efi at cardozo.org>
>>To: yip yee keong <wungun73 at hotmail.com>
>>Subject: Re: 74hc573 pin out doubt
>>Date: Wed, 23 Jun 1999 17:21:26 -0700
>>       74573
>    +---\/---+
>1 -|/oe  Vcc|- 20
>2 -|d0    q0|- 19
>3 -|d1    q1|- 18
>4 -|d2    q2|- 17
>5 -|d3    q3|- 16 <-----this is the pinout u show me
>6 -|d4    q4|- 15
>7 -|d5    q5|- 14
>8 -|d6    q6|- 13
>9 -|d7    q7|- 12
>10 -|gnd   le|- 11
>    +--------+
>
>
>    +---\/---+
>1 -[oc      ]- 20
>2 -[d1    q1]- 19
>3 -[d2    q2]- 18
>4 -[d3    q3]- 17
>5 -[d4    q4]- 16 <-----this is the pinout on the shecmatic drawing
>6 -[d5    q5]- 15       showing the (74hc573)
>7 -[d6    q6]- 14
>8 -[d7    q7]- 13
>9 -[d8    q8]- 12
>10 -[       c]- 11
>    +--------+
>
>Is the 74573 compatible with the 74hc573 ????,on the drawing above there is
>a quite differ on the pin out did u see it any.
>
>>Bob,
>>	I'm not familiiar with the Harris version of the 74HC573, but I suspect
>>you may be looking at the wrong package of the chip - I use a 20-pin DIP
>>(see: http://www.hitex.com/chipdir/pin/74573.txt for a pinout).  The
>>software is loaded into the flash memory using an EPROM programmer.  I hope
>>this helps.
>>
>>				Al
>>
>>
>>At 01:35 AM 6/24/99 +0000, you wrote:
>> >hi,mr lipper,my name is  bob,from malaysia,after looking into the diy 
>>ecu,i
>> >was interested in buliding,ecu 6 for my car,on the shecmetic diagram with 
>>u
>> >draw,there is the (74hc573)chip pinout that i doubt about,because when 
>>i'm
>> >trying to find the specify chip in harris documant it turns out that the
>> >pinout was in different position,hope that u could help me on the specify
>> >chip,and about installation of the software to the ecu,because i'm new to
>> >logic/software transfer.thanks
>> >
>> >       74573
>    +---\/---+
>1 -|/oe  Vcc|- 20
>2 -|d0    q0|- 19
>3 -|d1    q1|- 18
>4 -|d2    q2|- 17
>5 -|d3    q3|- 16 <-----this is the pinout u show me
>6 -|d4    q4|- 15
>7 -|d5    q5|- 14
>8 -|d6    q6|- 13
>9 -|d7    q7|- 12
>10 -|gnd   le|- 11
>    +--------+
>
>
>    +---\/---+
>1 -[oc      ]- 20
>2 -[d1    q1]- 19
>3 -[d2    q2]- 18
>4 -[d3    q3]- 17
>5 -[d4    q4]- 16 <-----this is the pinout on the shecmatic drawing
>6 -[d5    q5]- 15       showing the (74hc573)
>7 -[d6    q6]- 14
>8 -[d7    q7]- 13
>9 -[d8    q8]- 12
>10 -[       c]- 11
>    +--------+
>
>Is the 74573 compatible with the 74hc573 ????,on the drawing above there is
>a quite differ on the pin out did u see it any.
>
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