Fujitsu F2MC-8FX F118AS Firmware Extraction Help - Page 1
Forum section: electronics / general

author: GabYoung92
author_rank: Regular Contributor
timestamp: January 15, 2018, 05:57:45 am
content: Hi All,I have a Fujitsu F2MC-8FX MB95F118AS which is being used as the controller for a touch panel. The processor has a known issue of possible blown pins as I have been able to use another known working processor in its spot. Good old Aliexpress has been helpful in providing "new" blank chips for programming and installation. (I am getting lots of these touch panels that need repair)I DO NOT have a copy of the firmware or the original source code so my only option is to try and extract the firmware.Created a breakout PCB so I can connect all the signals and such to the processor. (See photos attached). This is where I have run into a brick wall. I have followed the datasheet, programming guide & installed the Programmer software fromhttp://www.cypress.com/documentation/software-and-drivers/flash-mcu-programmer-1.1) When the processor boots up without the MOD wire connected (Floating) I get data coming out of the processor on the serial pins. (SO i know the chip is getting power / the crystal is working / the USB->Serial converter board is working etc...)2) When pin MOD is set to high, I can't get the software to communicate with the chip. (I have tried all the target processors and no luck)The software only has a target of MB95F118B/M. I'm not sure if B/M to AS will cause it not to read.I have tried reading one of the blank processors (incase a lockbit has been set) and still no luckMy question is: Does anyone know/have experience with reading the firmware out of a MB95F118AS processor?Thanks,Gab

author: abyrvalg
author_rank: Frequent Contributor
timestamp: January 15, 2018, 09:01:16 pm
content: The programming datasheet (http://www.fujitsu.com/downloads/MICRO/fma/mcu/PCW8FXe.pdf) says you need to set P12=low and P13=high also.

author: GabYoung92
author_rank: Regular Contributor
timestamp: January 15, 2018, 10:35:55 pm
content: Quote from: abyrvalg on January 15, 2018, 09:01:16 pmGood eye for spotting that! But it looks like I failed to mention that I followed that instruction as well. I also tried those pins floating as well, no help.The one thing I was considering to be an issue is the timing diagram on page "5" of that datasheet.

author: abyrvalg
author_rank: Frequent Contributor
timestamp: January 16, 2018, 11:19:22 am
content: The A series datasheet (http://www.fujitsu.com/downloads/MICRO/fma/pdfmcu/8bit_e712602.pdf) says nothing about serial programming (parallel only)

author: lluchiari
author_rank: Contributor
timestamp: December 07, 2022, 01:15:05 pm
content: GabYoung92 did you find the answer? I have the exact same problem with an 16FX Fujitsu microcontroller. I can't even find SOFTUNE software (and Infineon doesn't help me).

author: DavidAlfa
author_rank: Super Contributor
timestamp: December 07, 2022, 01:33:43 pm
content: Some info here:https://www.pentax-hack.info/documents/blog.php?page=1Including a evaluation version ofSoftune v6.

author: lluchiari
author_rank: Contributor
timestamp: December 07, 2022, 03:24:20 pm
content: DavidAlfa, thanks for reply.I found this V6 of Softune, but it's so old that does't have my micro version!

author: coromonadalix
author_rank: Super Contributor
timestamp: December 07, 2022, 05:45:42 pm
content: Search onhttps://www.pudn.com/search?q=Fujitsu%20MCU&s=0&spm=and maybe someone registered there can help ?all i've found is this: The following Spansion FR Softune (formerly "Fujitu FR Softune") or this: Softune Workbench V30L26Nothing is found past V6 ??good luck

author: lluchiari
author_rank: Contributor
timestamp: December 07, 2022, 08:59:17 pm
content: coromonadalix, this pudn is a very weird website!But I found nothing there!QuoteActually there is, but just Infineon has! And I'm really trying with them, but they are not very keen to give me!

author: true
author_rank: Frequent Contributor
timestamp: December 23, 2022, 07:27:45 am
content: I've also tried contacting Infineon, and had a resource in Europe try the same thing. I am specifically looking for the last F2MC-8FX version. They wouldn't help.There are three completely different versions of the software: for 8-bit (including 8FX), 16FX and for FR series MCU. You need the specific version for the family of MCU you are trying to work with.For 8 and 16-bit MCUs, all I have been able to openly find online are very old versions that do not cover much of the product range.The latest versions I have are 300012 for 8FX (from somewhere random) and 300023 for 16FX (from pentax-hack). As you noted, these are ancient.