HD64F2149 Datasheet, PDF (935/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

ICMR1—I²C Bus Mode Register 1
ICMR0—I²C Bus Mode Register 0
H'FF8F
H'FFDF
IIC1
IIC0
Bit
7
6
5
4
3
2
1
0
MLS WAIT CKS2 CKS1 CKS0 BC2
BC1
BC0
Initial value
0
0
0
0
0
0
0
0
Read/Write R/W
R/W R/W
R/W R/W R/W
R/W R/W
Bit counter
BC2 BC1
0
0
1
1
0
1
BC0
Synchronous
serial format
0
8
1
1
0
2
1
3
0
4
1
5
0
6
1
7
I²C bus
format
9
2
3
4
5
6
7
8
Serial clock select
Transfer Rate
IICX CKS2 CKS1 CKS0 Clock _{ø = 5 MHz ø = 8 MHz ø = 10 MHz}
0
0
0
0 ø/28 179 kHz 286 kHz 357 kHz
1 ø/40 125 kHz 200 kHz 250 kHz
1
0 ø/48 104 kHz 167 kHz 208 kHz
1 ø/64 78.1 kHz 125 kHz 156 kHz
1
0
0 ø/80 62.5 kHz 100 kHz 125 kHz
1 ø/100 50.0 kHz 80.0 kHz 100 kHz
1
0 ø/112 44.6 kHz 71.4 kHz 89.3 kHz
1 ø/128 39.1 kHz 62.5 kHz 78.1 kHz
1
0
0
0 ø/56 89.3 kHz 143 kHz 179 kHz
1 ø/80 62.5 kHz 100 kHz 125 kHz
1
0 ø/96 52.1 kHz 83.3 kHz 104 kHz
1 ø/128 39.1 kHz 62.5 kHz 78.1 kHz
1
0
0 ø/160 31.3 kHz 50.0 kHz 62.5 kHz
1 ø/200 25.0 kHz 40.0 kHz 50.0 kHz
1
0 ø/224 22.3 kHz 35.7 kHz 44.6 kHz
1 ø/256 19.5 kHz 31.3 kHz 39.1 kHz
Note: Maximum operating frequency of H8S/2169 and H8S/2149 is 10 MHz.
Wait insertion bit
0 Data and acknowledge bits transferred consecutively
1 Wait inserted between data and acknowledge bits
MSB-first/LSB-first select*
0 MSB-first
1 LSB-first
Note: * Do not set this bit to 1 when the I²C bus format is used.
901