h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 932
h8s-2646
Manufacturer Part Number
h8s-2646
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2646.pdf
(1165 pages)
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Appendix B Internal I/O Register
REC—Receive Error Counter
TEC—Transmit Error Counter
UMSR—Unread Message Status Register
Rev. 5.00 Sep 22, 2005 page 906 of 1136
REJ09B0257-0500
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Note: * Only 1 can be written, to clear the flag.
UMSR15
UMSR7
R/(W) *
R/(W) *
15
R
R
7
0
7
0
7
0
0
Unread Message Status Flags
0
1
[Clearing condition]
Writing 1
Unread receive message is overwritten by a new message
[Setting condition]
When a new message is received before RXPR is cleared
UMSR14
UMSR6
R/(W) *
R/(W) *
14
6
0
R
R
6
0
6
0
0
UMSR13
UMSR5
R/(W) *
R/(W) *
13
R
R
5
0
5
0
5
0
0
UMSR12
UMSR4
R/(W) *
R/(W) *
12
R
R
4
0
4
0
4
0
0
UMSR11
UMSR3
R/(W) *
H'F818
H'F819
H'F81A
R/(W) *
11
R
R
3
0
3
0
3
0
0
UMSR10
UMSR2
R/(W) *
R/(W) *
10
R
R
2
0
2
0
2
0
0
(x = 15 to 0)
UMSR9
UMSR1
R/(W) *
R/(W) *
R
R
1
0
1
0
1
0
9
0
UMSR8
UMSR0
R/(W) *
R/(W) *
R
R
0
0
0
0
0
0
8
0
HCAN
HCAN
HCAN
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