Renesas/NEC UPD76F01xx (B32R)

Does anyone have any information on this MCU series?

Marked - B32R

Interesting read flash (glitch) UPD76F0101GJ / UPD76F0165GJ / UPD76F0166GJ.

Here are the internals - infosecdj:nec:d76f0102 [Silicon Prawn]
Empirically, the pinout is almost identical.