HD6432633 Datasheet, PDF (1342/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

ICMR0—I²C Bus Mode Register
H'FF7F
ICMR1—I²C Bus Mode Register
H'FF87
(These functions are not available in the H8S/2695.)
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
R/W
: _R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
IIC0
IIC1
Bit counter
Bit 2 Bit 1
BC2 BC1
Bit 0
BC0
0
0
0
1
1
0
1
1
0
0
1
1
0
1
Bit/frame
Clock synchronous
PC bus format
serial format
8
9
1
2
2
3
3
4
4
5
5
6
6
7
7
8
Transmit clock select
SCRX Bit 5
Bit
5, 6
IICX CKS2
0
0
1
1
0
1
Bit 4
CKS1
0
1
0
1
0
1
0
1
Bit 3
CKS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Clock
ø/28
ø/40
ø/48
ø/64
ø/80
ø/100
ø/112
ø/128
ø/56
ø/80
ø/96
ø/128
ø/160
ø/200
ø/224
ø/256
Transfer rate
ø= 5 MHz ø= 8 MHz
179kHz 286 kHz
125kHz 200 kHz
104kHz 167 kHz
78.1kHz 125 kHz
62.5kHz 100 kHz
50.0kHz 80.0 kHz
44.6kHz 71.4 kHz
39.1kHz 62.5 kHz
89.3kHz 143 kHz
62.5kHz 100 kHz
52.1kHz 83.3 kHz
39.1kHz 62.5 kHz
31.3kHz 50.0 kHz
25.0kHz 40.0 kHz
22.3kHz 35.7 kHz
19.5kHz 31.3 kHz
ø= 10 MHz ø= 16 MHz ø= 20 MHz ø= 25 MHz ø= 28 MHz
357 kHz 571 kHz* 714 kHz* 893 kHz* 1000 kHz*
250 kHz 400 kHz 500 kHz* 625 kHz* 700 kHz*
208 kHz 333 kHz 417 kHz* 521 kHz* 583 kHz*
156 kHz 250 kHz 313 kHz 391 kHz 438 kHz*
125 kHz 200 kHz 250 kHz 313 kHz 350 kHz
100 kHz 160 kHz 200 kHz 250 kHz 280 kHz
89.3 kHz 143 kHz 179 kHz 223 kHz 250 kHz
78.1 kHz 125 kHz 156 kHz 195 kHz 219 kHz
179 kHz 286 kHz 357 kHz 446 kHz* 500 kHz*
125 kHz 200 kHz 250 kHz 313 kHz 350 kHz
104 kHz 167 kHz 208 kHz 260 kHz 292 kHz
78.1 kHz 125 kHz 156 kHz 195 kHz 219 kHz
62.5 kHz 100 kHz 125 kHz 156 kHz 175 kHz
50.0 kHz 80.0 kHz 100 kHz 125 kHz 140 kHz
44.6 kHz 71.4 kHz 89.3 kHz 112 kHz 125 kHz
39.1 kHz 62.5 kHz 78.1 kHz 97.7 kHz 109 kHz
Note: * These rates are outside the ranges stipulated in the I²C bus interface specifications
(normal mode: max. 100 kHz, high-speed mode: max. 400 kHz).
Wait insert bit
0 Send data followed by acknowledge bit.
1 Insert wait between data and acknowledge bit.
MSB-first/LSB-first select
0 MSB first
1 LSB first
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