The generic ATTiny24/44/84 datasheet has details of the BODS and BODSE bits in the MCUCR register, and says that:
This bit is unused in devices where software BOD disable has not been implemented and will
read as zero in those devices.
but I don't seem to be able to find any info on which devices do have this function.
I would assume that my ATTiny24V does, as the V series was aimed at lower power, IIRC.
Anyone have a more definitive answer?
The AS6 defs for ATTiny24A don't have the BODS or BODSE bit defined, and AS6 doesn't seem to be aware of the V part.