These come packaged in QFP44 and custom-marked; most likely, this is mask-programmed TMP86CH06U – note the CH06U part in package marking.
Package
With Toshiba logo:
E250013256 CH06U-4UE4 JAPAN 0277 HAL 960061
Without Toshiba logo:
75076365_V35 CH06U-4H15 JAPAN 0252 HAL 492823
