h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 928

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Appendix B Internal I/O Register
Rev. 5.00 Sep 22, 2005 page 902 of 1136
REJ09B0257-0500
Bit
Initial value
Read/Write
Note: * Only 1 can be written, to clear the flag.
Bus Operation Interrupt Flag
0
1
CAN bus idle state
[Clearing condition]
Writing 1
CAN bus operation in HCAN sleep mode
[Setting condition]
Bus operation (dominant bit detection) in HCAN sleep mode
Unread Interrupt Flag
—
—
7
0
0
1
[Clearing condition]
Clearing of all bits in UMSR (unread message status register)
Unread message overwrite
[Setting condition]
When UMSR (unread message status register) is set
Mailbox Empty Interrupt Flag
0 [Clearing condition]
1
Writing 1
Transmit message has been transmitted or aborted, and new message
can be stored
[Setting condition]
When TXPR (transmit wait register) is cleared by completion of
transmission or completion of transmission abort
—
—
6
0
—
—
5
0
R/(W) *
IRR12
4
0
—
—
3
0
—
—
2
0
R/(W) *
IRR9
1
0
R/(W) *
IRR8
0
0