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Charles Bannister
07/25/05 22:34
Read: 4634 times

Msg Score: 0
 +1 Informative
 -1 Overrated
#98106 - DS89C450 is fast 8051.
Responding to: Henry Sodens's previous message
Hello Henry,

Check out these MCU's from Dallas semiconductor. Now a part of
Maxim IC ( You can get free samples in 40
pin dip's. Below is some information available for this chip. It
really is a super duper 8051.


Charles Bannister

Ultra-High-Speed Flash Microcontrollers
The DS89C430, DS89C440, and DS89C450 offer the
highest performance available in 8051-compatible
microcontrollers. They feature newly designed
processor cores that execute instructions up to 12
times faster than the original 8051 at the same
crystal speed. Typical applications will experience a
speed improvement up to 10x. At 1 million
instructions per second (MIPS) per megahertz, the
microcontrollers achieve 33 MIPS performance from
a maximum 33MHz clock rate.
Don't know how to program it check out this application note.
App Note 3477: Using the Free SDCC C Compiler to
Develop Firmware for the DS89C420/430/440/450
Family of Microcontrollers
Here is some software which runs on a IBM pc which can
program the MCU
Microcontroller Tool Kit (MTK) from Dallas Semiconductor

Link to FTP archive (370K) Microcontroller Tool Kit
Microcontroller Tool Kit (MTK) is a PC-based application in the
programming and debugging of microcontrollers manufactured by
Dallas Semiconductor. This software requires Windows 95 or more
recent operating system, and an open COM port. It allows an
embedded system designer to program and configure Dallas
Semiconductor microcontrollers equipped with a ROM/bootstrap

I built this programmer using chips I had on hand
Here is another schematic of programmer.

List of 38 messages in thread
Looking for 80C251 board      Henry Sodens      07/25/05 21:20      
   DS89C450 is fast 8051.      Charles Bannister      07/25/05 22:34      
      Cheap 'n' cheerful      Russell Bull      07/26/05 01:56      
      builtin bootloader      Matthias Arndt      07/26/05 03:05      
         Common place        Steve M. Taylor      07/26/05 05:06      
            good to know      Matthias Arndt      07/26/05 06:45      
               And Texas Instruments        Craig Steiner      07/26/05 06:58      
                  DS89C4x0      Jan Waclawek      07/26/05 07:19      
                     Not sure      Craig Steiner      07/26/05 07:35      
                        DS89C420 vs. DS89C430/440/450      Sasha Jevtic      07/26/05 14:45      
                     You are probably right      Matthias Arndt      07/26/05 09:53      
                  ok      Matthias Arndt      07/26/05 09:55      
            Death of the Programmer        Andy Neil      08/01/05 02:21      
         Yes, it's nice      Sasha Jevtic      07/26/05 14:33      
            comments      Erik Malund      07/26/05 14:42      
      "marketing"      Erik Malund      07/26/05 07:26      
         let's put it this way:      Jan Waclawek      07/26/05 07:46      
            Which is exactly what they say ...      Phillip M Gallo      07/26/05 13:00      
               overview      Jan Waclawek      07/26/05 14:55      
                  DS'420 IAP      Phillip M Gallo      07/26/05 15:03      
                     I'm not polite...      Jan Waclawek      07/26/05 15:31      
                        MAXIM/Dallas and Flash      Phillip M Gallo      07/26/05 16:16      
                           common practice today      Erik Malund      07/26/05 16:23      
                           Nor forgetting      Steve M. Taylor      07/27/05 07:42      
                              DS2250 - Secure Micro      Phillip M Gallo      07/27/05 11:57      
      Very nice and informative      Kai Klaas      07/30/05 05:19      
   Saved a few cents for a lot of work.      Charles Bannister      07/26/05 02:42      
      In-system programming      Sasha Jevtic      07/26/05 14:59      
         ISP Header        Phillip M Gallo      07/30/05 11:31      
      schematics?      Christian Kleiber      07/28/05 00:08      
         if you are looking for schematics of ISP      Erik Malund      07/28/05 05:59      
   Why on earth      Erik Malund      07/26/05 06:30      
   '251 board      Phillip M Gallo      07/26/05 13:10      
   if you decide to leave the '51 (which yo      Erik Malund      07/26/05 13:19 SBC supports DS89C420      Jon Ledbetter      07/27/05 15:23      
   Dead Thread?      Andy Neil      08/01/05 05:03      
NOTICE: Message(s) moved      Craig Steiner      07/30/05 08:40      
   Moving posts      Terry Lingle      07/30/05 10:27      

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