I read somewhere that there is a possibility of an HC08 MCU failing to restart after brown out unless Vdd dropped below a particular level before recovering. I'm having trouble locating that document but I think it was an HC08 app note. I have the picture in mind of a graph that showed that if Vdd dropped below a certain level (but not low enough for POR) that if it subsequently recovered the MCU would not get a new POR.
I wish to change to HCS08SH8. My question is; Does the HCS08 (specifically the SHx) also have this same characteristic?