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From my point of view there is 2 possibilities: 1: Extracting the stock firmware for deep analysis (decompiling, binary->assembly language->any high-level language like C->state-machine graph), I made a couple of reverse engineering on competitor's products (when working for automotive...

Ideally the main chip so I can try to find the exact partnumber, logo, manufacturer anything to confirm the identity of the chip. But any chip is welcome and especially all masked rom, like the knock chip, because bits are hardwired on the silicium and can easily be read by a software...

If someone could provide an IC (even broken) I will be so happy ! There is a hope to find the exact partnumber !

Off course I contacted Fujitsu but they told me they sold the Mcu division who is now hold by Cypress, but cypress couldn't help me because it's too old and also made under fujitsu management...

Oups, made a mistake with DENSO P/N and DIE observation The main MCU, supposed to be an Hitachi 8x labelled as follow (from a Toyota MR2): D151802-4800 7433-1380 1B2524 The second MCU dedicated fro knock and lambda sensor: D 151802-2860 572 130M 9046 Z44 Here is the logo: Here is the...

I'm looking for the same IC for decaping, this time without damaging the DIE. PS: no mask rom, looks like a PROM (OTP ?)

I have a metallurgical micrscope that I use for DIE inspection, as said a couple of week ago I was able to read the partnumber and manufacturer's logo for the knock MCU : The IC is labelled: D151802-4800 74331380 1B2524 On the DIE is a Fujitsu logo and also "FUJITSU", "87" maybe a year...

I desoldered with my hot air station both IC, but I'm unable to inspect the main MCU because I damage it. If someone own a broken ECU I would be happy to try again !

The pinout fit with fujitsu databook for the mb885000 series (understand supply and crystal, also adc ref). I contacted fujitsu, I hope they will answer with the datasheet. Unfortunately my microscope is a cheap usb camera with a cheap lens, I'm investing in a low cost but true...

Hi everybody ! I'm here because I'm mad about japanese car and embedded electronic ! The topic about TCCS is very interesting and after reading a lot I would like to contribute ! Unfortunatelly I don't drive any toyota right now, but I'm working on ECU (one from a MR2). I identified a chip...

I decapped the 42-pin IC labelled "D 151802-2860" "572 130M" "9046 Z44". Supposed to be the knock MCU from a MR2 ECU Nitric acid (60%) heated and a couple of hour ! Guess what ? It's a Fujitsu chip, the partnumber is also on the DIE: MB88572 There is also a year: 1987 !!!