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'[PIC]: A great solution for the PIC16F877 problems'
2001\07\23@192817 by Neil Gandler

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Sorry for the repetition... finally got the [pic]: right in the subject header:

Wan't a PIC that you can code protect from external reads and writes to the EEPROM program memory, AND
still allow internal reads and writes under software control (I.E. some type of custom bootloader with perhaps some encryption algorythm), look no further than the new 18F series. I just called Microchip today to ask if the 18F has the problems of the 16F877. The answer is no. The 18F
solves this quirk. See for yourself, by looking at the 18Fxxx series data sheet, specifically p.70 and p.206-. And you don't need to wait for the 77A version next march. The 18F series is already available for sampling.

Neil Gandler
Founder, CTO
MAI Technology Inc.
P.O. Box 64072
Sunnyvale, CA 94088-4072
Phone & Fax: 408-904-5089
e-mail: spam_OUTneil_gandlerTakeThisOuTspamgetmai.com
http://www.getmai.com

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2001\07\23@221548 by Brandon Fosdick

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Neil Gandler wrote:
>
> Sorry for the repetition... finally got the [pic]: right in the subject header:
>
> Wan't a PIC that you can code protect from external reads and writes to the EEPROM program memory, AND
> still allow internal reads and writes under software control (I.E. some type of custom bootloader with perhaps some encryption algorythm), look no further than the new 18F series. I just called Microchip today to ask if the 18F has the problems of the 16F877. The answer is no. The 18F
> solves this quirk. See for yourself, by looking at the 18Fxxx series data sheet, specifically p.70 and p.206-. And you don't need to wait for the 77A version next march. The 18F series is already available for sampling.

I see the link on the web page that says "Purchase Samples Online:" and
I go to buy.microchip.com but I don't see any 18FXXX chips for sale. Is
there some secret handshake that I don't know about?

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2001\07\23@231654 by Bob Ammerman

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I went to the Masters where they gave us a 18F452JW marked ES (engineering
sample).

So, it looks like the chip exists...

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

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2001\07\24@012336 by Ron Anthony

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how does the 18F452 compare pricewise to the 18F442, and both relative
pricewise to the 16F877 ?

-----Original Message-----
From: pic microcontroller discussion list
[.....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU]On Behalf Of Bob Ammerman
Sent: Monday, July 23, 2001 10:13 PM
To: PICLISTspamKILLspamMITVMA.MIT.EDU
Subject: Re: [PIC]: A great solution for the PIC16F877 problems (code
protect,bootloader)


I went to the Masters where they gave us a 18F452JW marked ES (engineering
sample).

So, it looks like the chip exists...

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

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