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66207 19 Feb 2004 - 22:01 - NEW TWiki Guest
The http://www.okisemi.com Oki 66207 MCU is used mainly in the OBD1CivicIntegraECUs . It uses the NX8/200 core. Lots of useful documentation on these processors is ...  
66kAssemblerDocs 18 Jun 2006 - 04:52 - r1.7 Home.blundar
Here you can find all the documentation on the Oki 66K achitecture that we have been able to find. If it isn't attached to this page, you can try looking at the http ...  
74HC373 05 Mar 2004 - 17:40 - NEW Home.blundar
The 74HC373 is an octal Latch chip. It Latch Latch es 8 bits of data, and is usally used when adding an external rom to a MCU  
ChippingAn88-89ECU 21 Sep 2005 - 08:24 - r1.8 Home.1net
OBD0MPFI ECUs have two main designs that affect how the ECU is chipped. 90-91 ECU s have an external 38256 (same as 27C256 ) ROM . This can be removed and replaced ...  
ClockSpeed 19 Feb 2004 - 22:01 - NEW TWiki Guest
Clock Speed refers to how fast the crystal oscillator driving the MCU is. It is important for calculating things based off timers, such as serial communication . ...  
DocECUSchool 05 Mar 2004 - 17:40 - NEW Home.blundar
From post: Doc Teaches ECU School A while ago, Doc and I had a conversation on IM that turned into a very informative post. It is now archived here for your reading ...  
ECUHardware 06 Feb 2007 - 01:40 - r1.4 Jared Karagen?
This page describes how the hardware in an ECU works, and fun things you can do with it. If you are just wanting to learn how to chip your ECU , you should look at ...  
EasyRtpInstall 30 Jul 2004 - 16:01 - r1.4 Lego Z81
Please Note: These installation instructions are preliminary. Please double check the instructions and report any errors. Once you've completed the construction of ...  
EcuChippingWirelist 22 Nov 2005 - 23:59 - r1.4 Home.markolson
This topic is intended to help you debug soldering problems when chipping an ECU. The first section is generic advice for debuggiing all ECUs. The remaining sections ...  
EcuDefinitionCodes 02 Apr 2007 - 17:06 - r1.84 Home.hackish
Honda ECU definition codes These id codes are the last 3 digits printed directly on the MCU after the model number (e.g. M66207-251 the "251" portion will be a much ...  
IO 19 Feb 2004 - 22:01 - NEW TWiki Guest
Input / Output lets a MCU talk to other things  
InternalROM 19 Feb 2004 - 22:01 - NEW TWiki Guest
Internal ROM is memory stored inside the MCU  
IntroductionToECUChipping 12 May 2006 - 09:00 - r1.10 Home.hondainfo
Introduction to ECU Chipping by David Blundell Please feel free to link to this article, but "mirroring" is highly discouraged, as you will not automatically receive ...  
MCU 30 Jul 2004 - 19:19 - NEW Lego Z81
MCU microcontroller A small CPU sometimes with RAM , ROM , EPROM , EEPROM , FLASH , or IO facilities onboard. Documentation on MCU's inside Honda ECU 's is http:/ ...  
McuReaders 05 Mar 2004 - 17:46 - r1.2 Home.blundar
All of the MCU readers described here take advantage of a design flaw of oki MCUs (and the design flaw is present on all MCUs we have seen to date). MCUs can use both ...  
OBD0InterChipCommunication 17 Feb 2004 - 09:44 - NEW Home.tungsten2k
There are several chips connected to the Oki83C154 or Oki80C154 MCU : NEC UPD7004C ADC 5128XRAM external SRAM Oki6260A IO controller 38256 EPROM (32k) in some cases ...  
OBD0MPFI 30 Jan 2006 - 07:24 - r1.5 Home.carotman
There is a very distinct family of ECUs found in 88-91ish OBD0 hondas. The main characteristics of this family: Oki80C154 or Oki83C154 MCUs that are essentially Intel8051 ...  
OBD0Oki83C154Reader 05 Mar 2004 - 17:56 - NEW Home.blundar
Dave says: Well, borrowing an idea from Nico-HRED/Doc used in the 66Ks, here is a program that should read out the contents of a 83C154 MCU. It assumes that you have ...  
OBD1CivicIntegraECUs 21 Feb 2006 - 08:00 - NEW Home.dj_spark
Almost all OBD1 ECU s used in 92-95 Civics and integras (but NOT preludes, accords, legends, etc.) are more or less electrically compatible. With minor tweaks, all ...  
OBD1J1 19 Feb 2004 - 22:01 - NEW TWiki Guest
J1 on OBD1 ECU s controls the state of EA . It is used to change whether the MCU uses an external ROM or internal program.  
OBD1Oki66207Reader-DIP64 05 Mar 2004 - 18:16 - NEW Home.blundar
First of all i'll thank Nico-HRED again for the info he posts in the general forum about the "66P507 Readout". I adapted the idea and simplified it, so everyone of ...  
OBD1Oki66207Reader-PLCC68 08 Jun 2006 - 00:20 - r1.2 Home.synoptic
After doing Doc's mod to read out the stock rom from a Australian P30 ecu with the 66207 in a 64 pin dip config, I started thinking that somewhere on the web I saw ...  
Oki6260A 02 Mar 2005 - 13:31 - r1.5 Home.l3st4rd
The Oki 6260A was manufactured for Honda by Oki. J. Wong has this to say: "I was just cleaning out my cube and just happened to run across a piece of paper with 6260A ...  
Oki80C154 20 Feb 2004 - 00:37 - NEW Home.blundar
MCU used in OBD0MPFI ECUs that has zero internal code memory. requires the use of an external EPROM It is mostly 8051 compatible, and features a third timer like ...  
Oki83C154 05 Mar 2004 - 17:44 - r1.2 Home.blundar
MCU used in OBD0MPFI ECU s that has 16k on-chip code memory. Usually copy protected, but there are McuReaders. It is mostly 8051 compatible, and features a third ...  
PM5 08 Jul 2005 - 14:52 - r1.3 Home.1net
PM5 88-91 Civic base model/CRX DX (DPFI D15b) There were two distinct styles of this ECU. One features an 83C154 MCU, one features a 66201 MCU. Presumably 88-89 vs ...  
PR3 29 Jan 2005 - 07:10 - r1.4 Home.noriega
PR3 89-93 JDM B16A EF8/9 MCU M66x301 58 and 93 Note: There are both OBD0 and OBD1 ECUs designated "PR3" and they are not in any shape or form compatible with each ...  
PreludeAccord 16 May 2005 - 14:26 - r1.2 Home.sloopy
OK, here is what I know about these ECUs. The PT6-A51 I have here has a 66911 MCU and uses an external 256k PROM. I got an ECU out of a 1994 Prelude SI with a 1.6 ...  
ReplaceM5128 27 Feb 2004 - 17:59 - NEW Home.synoptic
This page explain how to replace the current 5128XRAM 2K SRAM chip by a DS1220 NVSRAM for future RTP solution. TOC Brief Explanation The M5128 chip is used to store ...  
RomMaps 12 Apr 2004 - 02:07 - r1.6 Home.SYnoptic
Rom Maps An area to collaborate on all the memory addresses found in ROMs TOC OBD1 Civic and Integra ECUs OBD1CivicIntegraECUs share a lot of features Memory Locations ...  
SuperProZ 19 Feb 2004 - 22:01 - NEW TWiki Guest
The http://www.xeltek.com Xeltek http://www.xeltek.com/product/programmer/spz.html SuperProZ retails for $249. It is still a parallel interface programmer like most ...  
TTL 19 Feb 2004 - 22:01 - NEW TWiki Guest
Transistor Transistor Logic uses 0/+5v signalling levels. It is commonly used by MCU s for native serial communication .  
TroubleshootingSolidCEL 27 Dec 2004 - 18:16 - r1.2 Home.markolson
Solid CELs are arguably one of the easier problems to troubleshoot because there are relatively few things that cause them to happen. A "solid" CEL occurs when there ...  
_EA 19 Feb 2004 - 22:01 - NEW TWiki Guest
EA (EA Prime) is a pin on the MCU that controls whether the MCU runs off Internal ROM or an external ROM chip. EA is pin 31 on 40-pin Intel8051 MCU s OBD1J1 J1 on ...  
serial%20communication 19 Feb 2004 - 22:01 - NEW TWiki Guest
serial communication refers to the transfer of information one bit at a time. It is commonly used for MCU s to communicate with PCs. RS232 is the standard used on ...  

Number of topics: 35

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