HD6433682 ETC, HD6433682 Datasheet - Page 322

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

Rev. 3.00, 05/03, page 292 of 472
Bit
5, 4
3
2
1
0
Bit Name
BCWP
BC2
BC1
BC0
Initial
Value
All 1
1
0
0
0
R/W
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 1, and cannot be modified.
BC Write Protect
This bit controls the BC2 to BC0 modifications. When
modifying BC2 to BC0, this bit should be cleared to 0 and
use the MOV instruction. In clock synchronous serial
mode, BC should not be modified.
0: When writing, values of BC2 to BC0 are set.
1: When reading, 1 is always read.
Bit Counter 2 to 0
These bits specify the number of bits to be transferred
next. When read, the remaining number of transfer bits is
indicated. With the I
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
pin is low. The value returns to 000 at the end of a data
transfer, including the acknowledge bit. With the clock
synchronous serial format, these bits should not be
modified.
I
000: 9 bits
001: 2 bits
010: 3 bits
011: 4 bits
100: 5 bits
101: 6 bits
110: 7 bits
111: 8 bits
2
C Bus Format
When writing, settings of BC2 to BC0 are invalid.
2
C bus format, the data is transferred
Clock Synchronous Serial Format
000: 8 bits
001: 1 bits
010: 2 bits
011: 3 bits
100: 4 bits
101: 5 bits
110: 6 bits
111: 7 bits