Search XC68704 datasheet &/o programmer schematic

XC parts were Motorola's engineering samples. The datasheet for the production parts would be under the same number with MC instead of XC.

What sort of date code? A lot of those old NMOS parts make good room heaters, but not much else. ;-). Kind of hard to make a good portable project when the microprocessor takes 100 mA, (like the MC68705P3 does).

Dig, dig, dig. Damn, I have some stuff for that chip. The data for the '704P2 is on the MC6804J1 etc. datasheet, numbered ADI1248, order number MC6804J1/D, dated 1986. I also have the M6804 MCU Manual, order number DLE404/D, circa 1985.

This was their cheap chip for large volume low performance applications, so support was a lot less than for the 6805 chips. They are bit serial internally so a byte cycle take 12 bus clocks (oscillator divided by 4,

2 or 1), and up to 5 byte cycles per instruction. Looks like the '704P2 takes 160-250 milliwatts, ie. about 40 mA.

If you can't find it on the web, I can scan it, but it make take a while as it's about a 1 cm stack of stuff.

Mark Zenier snipped-for-privacy@eskimo.com Googleproofaddress(account:mzenier provider:eskimo domain:com)

By very first Thank You for your help...

the date code is: 1A30G8642 so , I guess, almost new... (21 years old!) on each tube is applied a label with handwritten QA responsible signature...

I found the MC6804J1 datasheet on the net but is only 17 pages and the J1 is only a 20 pin not a 28 as mines No I'm not trying to do anything of portable device, so not care about mA What I like to do is simply programming one of those device only for the sake to do it So the informations I need are a detailed pinout of 68704P2S, a schematic diagram of the eprom programming ( or the electrical and timing specs to do it) ( about

20 years ago I built a 8048 eprom programmer from intel dbook specs) Also is needed a programming model of the device (I guess there are only more i/o pin of A port).

That You understand the device is 6805 code similar (in serial processing) or different ? I searched and downloaded XASMs that support 6804 but haven't not tried yet.

Well a complete book will be the best but probably not so indispensable and I don't want abuse Your patience.

Also sorry for my english... I wrote from Italy.

bye delo

I try to send this You by email but not passed the antispam system ( btw I'm not a spammer...)

"Mark Zenier" ha scritto nel messaggio news:fg7rq3$tco$ snipped-for-privacy@eskinews.eskimo.com...

I did get a copy by email. Curious. I wonder if something ate my reply.

Anyway, for Delo and anyone else interested in obscure 20 year old microprocessors

the 6804 family MPU manual (5.4 MBytes)

the MC6804J1/J2/P2/704P2 datasheet (2.8 MBytes)

The ap. note for the '704P2 programmer board (800kBytes)

Mark Zenier snipped-for-privacy@eskimo.com Googleproofaddress(account:mzenier provider:eskimo domain:com)