h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 1490

• 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
ICMR0—I
ICMR1—I
Rev. 6.00 Feb 22, 2005 page 1430 of 1484
REJ09B0103-0600
Bit
Initial value
R/W
Note: This register is valid only on the H8S/2638, H8S/2639, or H8S/2630 with the I
option added.
2
2
C Bus Mode Register
C Bus Mode Register
:
:
:
MSB-first/LSB-first select
0 MSB first
1 LSB first
MLS
R/W
7
0
Wait insert bit
0 Send data followed by acknowledge bit.
1 Insert wait between data and acknowledge bit.
WAIT
R/W
6
0
Note: * These rates are outside the ranges stipulated in the I
Transmit clock select
SCRX Bit 5
5, 6
IICX
bit
0
1
CKS2
R/W
CKS2
max. 100 kHz, high-speed mode: max. 400 kHz).
5
0
0
1
0
1
CKS1
Bit 4
Bit counter
0
1
0
1
0
1
0
1
CKS1
Bit 2
BC2
R/W
0
1
4
0
CKS0
Bit 3
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Bit 1
BC1
0
1
0
1
Clock
CKS0
φ/100
φ/112
φ/128
φ/128
φ/160
φ/200
φ/224
φ/256
φ/28
φ/40
φ/48
φ/64
φ/80
φ/56
φ/80
φ/96
R/W
3
0
Bit 0
BC0
0
1
0
1
0
1
0
1
φ = 5 MHz φ = 8 MHz φ = 10 MHz φ = 16 MHz φ = 20 MHz
78.1kHz
62.5kHz
50.0kHz
44.6kHz
39.1kHz
89.3kHz
62.5kHz
52.1kHz
39.1kHz
31.3kHz
25.0kHz
22.3kHz
19.5kHz
179kHz
125kHz
104kHz
H'FF7F
H'FF87
BC2
R/W
2
0
serial format
Clock sync
80.0 kHz
71.4 kHz
62.5 kHz
83.3 kHz
62.5 kHz
50.0 kHz
40.0 kHz
35.7 kHz
31.3 kHz
286 kHz
200 kHz
167 kHz
125 kHz
100 kHz
143 kHz
100 kHz
8
1
2
3
4
5
6
7
2
C bus interface specifications (normal mode:
BC1
R/W
1
0
89.3 kHz
78.1 kHz
78.1 kHz
62.5 kHz
50.0 kHz
44.6 kHz
39.1 kHz
357 kHz
250 kHz
208 kHz
156 kHz
125 kHz
100 kHz
179 kHz
125 kHz
104 kHz
Bit/frame
Transfer rate
2
C bus interface
BC0
R/W
80.0 kHz
71.4 kHz
62.5 kHz
400 kHz
333 kHz
250 kHz
200 kHz
160 kHz
143 kHz
125 kHz
286 kHz
200 kHz
167 kHz
125 kHz
100 kHz
571 kHz *
PC bus format
0
0
9
2
3
4
5
6
7
8
89.3 kHz
78.1 kHz
714 kHz *
500 kHz *
417 kHz *
313 kHz
250 kHz
200 kHz
179 kHz
156 kHz
357 kHz
250 kHz
208 kHz
156 kHz
125 kHz
100 kHz
IIC0
IIC1