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PICList Thread
'[OT] Zilog'
2000\05\27@041115 by juggernut

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Hi!

I just want to us about Zilog Microcontrollers. Is there any zilog
microcontrollers which is the same as PIC where ROM and RAM are on chips?


Best regards,
-=jug=-
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2000\05\27@100816 by David VanHorn

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At 04:25 PM 5/27/00 -0700, juggernut wrote:
>Hi!
>
>I just want to us about Zilog Microcontrollers. Is there any zilog
>microcontrollers which is the same as PIC where ROM and RAM are on chips?

Certainly.

In fact ALL the Z8s are this way.
The internal architechture of the Z8 is very nice.   The major difference
is that ALL of ram is registers, and all instructions work in all registers.


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2000\05\27@110947 by WF

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Yes..Z8... go to http://www.zilog.com/z8

----- Original Message -----
From: juggernut <juggernutspamKILLspamCROSSWINDS.NET>
To: <.....PICLISTKILLspamspam.....MITVMA.MIT.EDU>
Sent: Saturday, May 27, 2000 8:25 PM
Subject: [OT] Zilog


Hi!

I just want to us about Zilog Microcontrollers. Is there any zilog
microcontrollers which is the same as PIC where ROM and RAM are on chips?


Best regards,
-=jug=-
;---------------------------------------------+
;  URL: http://juggernut.cjb.net                       +
;  Email: EraseMEjuggernutzspam_OUTspamTakeThisOuTyahoo.com                    +
;        juggernutspamspam_OUTcrosswinds.net                    +
;---------------------------------------------+

2000\05\28@070251 by Russell McMahon

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Zilog make a vast range of processors which fit this description.
All the Z8 range. Their older Z80 doesn't

I am using a Z8 in a current volume project because its mix of featured and
price were unbeatable.
The instruction set is very nice. Speed is OK - much the same as PIC despite
the divide by 12 clock. All instructions are register to register - no
intermediate accumulator (ie W) step. Also some very powerful indirect
addressing modes and OPTIONAL address paging for RAM/registers. You can use
4, 8 or ?12 bit RAM addressing with a register pointer if you want to use
it. The advantage is less ROM usage if you use the shorter length addresses.
A very few instructions will work only with short addresses (things like the
equivalent of decrement and skip if not zero).

If you were looking at bottom end Z8s then look at the Z8plus family
Overall they are a VERY nice processor to learn and use. My biggest problem
with them has been less than perfect data sheets (which we can all do
without) and some uncertainty about the performance under brownout
conditions - this has (probably) been  addressed by the newer family members
which have internal brownout protection. Notable advantages are low cost for
performance ($US0.70 in volume, under $US1 in tube quantity for eg Z8PE003)
, good timers, PWM on low end models.

Zilog do a very well priced emulator ($US100 !) which is better value for
money than anything else I've seen plus a full IDE development environment
which includes a free C compiler and assembler.

PIC or Z8?
I use both.
Horses for courses.


RM


     Russell McMahon
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Help the hungry at no cost to yourself!
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(* - or woman, child or internet enabled intelligent entity :-))


{Original Message removed}


'[OT] Zilog'
2009\06\18@084857 by Xiaofan Chen
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I think this must be quite old news.
www.microcontroller.com/news/Zilog_Sells_Crimzon_Zatara.asp
"However, with the exit of Dr. Norm Sheridan as head of Engineering,
as well as the departure of almost all of Zilog's experienced design engineers,
Zilog's present management does not intend to develop any new silicon
because they no longer have a design engineering team. Only two or three
semiconductor design engineers remain with the company."

I was actually browsing the Maxim site since they visited me today
(for DAC and ADCs). But then I notice that they have the IR MCU
suddenly. Then I noticed that Zilog has sold of the IR MCU and
ARM9 Secured MCU lines to Maxim.

I learned about the Z80 along with Intel MCS51 for my university
MCU course. Nobody was interested in the Z80 then since 8051 and
8098 was popular at that time in China. But the lab equipment
was there and the teacher thought it was not too bad to teach
Z80 before the next course (8088 assembly and PC interface).

--
Xiaofan http://mcuee.blogspot.com

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