HD64F3039F18 Datasheet, PDF (113/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 5 Interrupt Controller
IPRA is initialized to H'00 by a reset and in hardware standby mode.
Bit 7—Priority Level A7 (IPRA7): Selects the priority level of IRQ0 interrupt requests.
Bit7
IPRA7
0
1
Description
IRQ0 interrupt requests have priority level 0 (low priority)
IRQ0 interrupt requests have priority level 1 (high priority)
(Initial value)
Bit 6—Priority Level A6 (IPRA6): Selects the priority level of IRQ1 interrupt requests.
Bit6
IPRA6
0
1
Description
IRQ1 interrupt requests have priority level 0 (low priority)
IRQ1 interrupt requests have priority level 1 (high priority)
(Initial value)
Bit 5—Reserved bit: This bit can be written and read, but it does not affect interrupt priority.
Bit 4—Priority Level A4 (IPRA4): Selects the priority level of IRQ₄ and IRQ₅ interrupt requests.
Bit4
IPRA4
0
1
Description
IRQ , IRQ interrupt requests have priority level 0 (low priority)
4
5
IRQ₄, IRQ₅ interrupt requests have priority level 1 (high priority)
(Initial value)
Bit 3—Priority Level A3 (IPRA3): Selects the priority level of WTD interrupt requests.
Bit3
IPRA3
0
1
Description
WDT interrupt requests have priority level 0 (low priority)
WDT interrupt requests have priority level 1 (high priority)
(Initial value)
Rev.3.00 Mar. 26, 2007 Page 89 of 682
REJ09B0353-0300