Is 23257-B related to ST72324?

[DEdwa]

I am trying to identify this 32 pin chip (23257-B) used in an automotive application (see picture). I am unable to locate any spec sheets. I am pretty sure it is a variant of the STMicroelectronics ST72324 8-bit microcontroller.  Can anyone confirm and provide a spec sheet for the 23257-B? 

Thanks - Dana