HD64F2638F20J Datasheet, PDF (1223/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Bit
7
6
⎯
⎯
Initial value
1
1
Read/Write
R
R
5
4
3
⎯ IMR12 ⎯
1
1
1
R
R/W
R
Appendix B Internal I/O Register
2
1
0
⎯
IMR9 IMR8
1
1
1
R
R/W R/W
Mailbox Empty Interrupt Mask
0 Mailbox empty interrupt request (SLE0) to CPU by IRR8 enabled
1 Mailbox empty interrupt request (SLE0) to CPU by IRR8 disabled
Unread Interrupt Mask
0 Unread message overwrite interrupt request (OVR0) to CPU by IRR9 enabled
1 Unread message overwrite interrupt request (OVR0) to CPU by IRR9 disabled
Bus Operation Interrupt Mask
0 Bus operation interrupt request (OVR0) to CPU by IRR12 enabled
1 Bus operation interrupt request (OVR0) to CPU by IRR12 disabled
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 1173 of 1458