跳转到主内容
Knowledgebase
Home
Renesas Electronics China - Knowledgebase

How are interrupts handled during FLASH programming?

Latest Updated:03/23/2009

Question:

How are interrupts handled during FLASH programming?

Answer:

"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."

Suitable Products
H8S/2668
H8S/2655
H8S/2643
H8S/2633
H8S/2628
H8S/2615
H8S/2612
H8S/2437
H8S/2368
H8S/2398, 2357
H8S/2355
H8S/2350
H8S/2345
H8S/2282, 2280
H8S/2276
H8S/2258, 2239, 2238, 2237, 2227
H8S/2245
H8S/2215
H8S/2214
H8S/2199R
H8S/2194
H8S/2172
H8S/2168
H8S/2158
H8S/2140B
H8S/2114R
H8S/2111B
H8S/2110B