Inside the 99 Chrysler 300M ECM/TCM

[David A. Cooley]

>Engine Module
>PN  04606840AP
>It also has a serial number, wonder if it's also imbeded in the flash chip?


Yes it is...

>
>Device purpose        Memory
>PN                          M28F220-90M3
>Brand                       ST         ( www.st.com)
>Package                   SO44
>4M Flash memory, soldered to the board
>
>Device purpose      Unknown
>PN                       4745389
>Brand                   ST
>Package               Rectangular, pins on all sides ~ 18 pin X ~26 pin
>Shows up on the www.jjsurface.com site, but not on www.st.com
>
>Device Purpose     CPU
>PN                       SC435409MFC16  (Copyright Chrysler 95)
>Brand                   Motorola
>Package               Square, pins on all sides ~110 total
>Shows up on the www.jjsurface.com site but not on the
search.motorola.com
>  site
>

Sounds like the MC68HC16... there are a few variants, one or two of which
include OBD_II J1850 messaging capabilities

>Device Purpose      Unknown
>PN                        04812391AB  Chry Corp97
>                            H9833BRJN
>Brand                    H in a square,    Harris  ( www.semi.harris.com)
>Package                Rectangular 28 pin surface mount
>It's listed on the JJ Surface site but not on the Harris site. Dosn't seem
to
>be knock sensing, the KS IC on the Harris site has 20 pins.    Harris seems
>to have a good automotive area
>http://www.semi.harris.com/auto/index.htm


This could also be a J1850 controller...  HIP7030 series