h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 1260

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Appendix B Internal I/O Register
Note: * This register is not available in the H8S/2635 and H8S/2634.
Note: * This register is not available in the H8S/2635 and H8S/2634.
Rev. 6.00 Feb 22, 2005 page 1200 of 1484
REJ09B0103-0600
REC0—Receive Error Counter
REC1—Receive Error Counter
TEC0—Transmit Error Counter
TEC1—Transmit Error Counter
UMSR0—Unread Message Status Register
UMSR1—Unread Message Status Register
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Notes: 1. This register is not available in the H8S/2635 and H8S/2634.
2. Only 1 can be written, to clear the flag to 0.
UMSR15
R/(W) *
R/(W) *
UMSR7
R
R
7
0
7
0
15
7
0
Unread Message Status Flags
0
0
1
2
2
[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
R/(W) *
UMSR6
R/(W) *
R
R
6
0
6
0
14
6
0
0
2
2
UMSR13
R/(W) *
R/(W) *
UMSR5
13
R
R
5
0
5
0
5
0
0
2
2
UMSR12
R/(W) *
UMSR4
R/(W) *
12
R
R
4
0
4
0
4
0
0
2
2
UMSR11
R/(W) *
R/(W) *
UMSR3
H'F818
H'FA18
H'F819
H'FA19
H'F81A
H'FA1A
11
3
0
0
R
R
3
0
3
0
2
2
UMSR10
R/(W) *
UMSR2
R/(W) *
10
2
0
0
R
R
2
0
2
0
2
2
UMSR9
R/(W) *
UMSR1
R/(W) *
1
0
9
0
R
R
1
0
1
0
2
2
UMSR8
R/(W) *
R/(W) *
UMSR0
HCAN1 *
0
0
8
0
HCAN1 *
HCAN1 *
R
R
0
0
0
0
HCAN0
HCAN0
HCAN0
2
2
1