HD6417750RF240V Datasheet, PDF (437/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 15 Controller Area Network (HCAN)
Bit Bit Name Initial Value R/W
1 IRR9
0
R
Description
Unread Interrupt Flag
Status flag indicating that a receive message has
been overwritten before being read.
[Setting condition]
• When UMSR (unread message status register) is
set
0 IRR8
0
[Clearing condition]
• Clearing of all bits in UMSR (unread message
status register)
R/(W)^* Mailbox Empty Interrupt Flag
Status flag indicating that the next transmit message
can be stored in the mailbox.
[Setting condition]
• When TXPR (transmit wait register) is cleared by
completion of transmission or completion of
transmission abort
[Clearing condition]
• Writing 1
Note: * Only 1 can be written to clear the flag.
Rev. 7.00 Sep. 11, 2009 Page 401 of 566
REJ09B0211-0700