h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 608

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

Section 15 I
Bits 2 to 0—Bit Counter (BC2 to BC0): Bits BC2 to BC0 specify the number of bits to be
transferred next. With the I
the data is transferred with one addition acknowledge bit. Bit BC2 to BC0 settings should be made
during an interval between transfer frames. If bits BC2 to BC0 are set to a value other than 000,
the setting should be made while the SCL line is low.
The bit counter is initialized to 000 by a reset and when a start condition is detected. The value
returns to 000 at the end of a data transfer, including the acknowledge bit.
Rev. 6.00 Feb 22, 2005 page 548 of 1484
REJ09B0103-0600
Bit 2
BC2
0
1
Bit 1
BC1
0
1
0
1
2
C Bus Interface [Option] (Only for the H8S/2638, H8S/2639, and H8S/2630)
BC0
Bit 0
0
1
0
1
0
1
0
1
2
C bus format (when the FS bit in SAR or the FSX bit in SARX is 0),
Synchronous Serial Format
8
1
2
3
4
5
6
7
Bits/Frame
I
9
2
3
4
5
6
7
8
2
C Bus Format
(Initial value)