"During FLASH programming / erasing you are not allowed to read from FLASH memory. As the interrupt vector table resides in the first area of memory, an interrupt would result in an access to FLASH area. As this is not allowed, ALL interrupts have to be masked during programming. Ensure that NMI can not be asserted during this time.
SH2 - can use interrupts during flash programming so long as the vector table is located outside of the FLASH memory. The start of the vector table must be set in the VBR."
|H8S/2258, 2239, 2238, 2237, 2227|