Datasheet

Section 16 I
2
C Bus Interface (IIC) (Option)
Rev. 6.00 Mar. 18, 2010 Page 642 of 982
REJ09B0054-0600
Table 16.3 I
2
C Transfer Rate
SCRX ICMR
Bit 5 and 6 Bit 5 Bit 4 Bit 3 Transfer Rate
IICX CKS2 CKS1 CKS0 Clock φ = 5 MHz
*
3
φ = 8 MHz
*
3
φ = 10 MHz φ = 16 MHz
*
2
φ = 20 MHz
*
2
0 0 0 0 φ/28 179 MHz 286 kHz 357 kHz 571 kHz
*
1
714 kHz
*
1
0 0 0 1 φ/40 125 kHz 200 kHz 250 kHz 400 kHz 500 kHz
*
1
0 0 1 0 φ/48 104 kHz 167 kHz 208 kHz 333 kHz 417 kHz
*
1
0 0 1 1 φ/64 78.1 kHz 125 kHz 156 kHz 250 kHz 313 kHz
0 1 0 0 φ/80 62.5 kHz 100 kHz 125 kHz 200 kHz 250 kHz
0 1 0 1 φ/100 50.0 kHz 80.0 kHz 100 kHz 160 kHz 200 kHz
0 1 1 0 φ/112 44.6 kHz 71.4 kHz 89.3 kHz 143 kHz 179 kHz
0 1 1 1 φ/128 39.1 kHz 62.5 kHz 78.1 kHz 125 kHz 156 kHz
1 0 0 0 φ/56 89.3 kHz 143 kHz 179 kHz 286 kHz 357 kHz
1 0 0 1 φ/80 62.5 kHz 100 kHz 125 kHz 200 kHz 250 kHz
1 0 1 0 φ/96 52.1 kHz 83.3 kHz 104 kHz 167 kHz 208 kHz
1 0 1 1 φ/128 39.1 kHz 62.5 kHz 78.1 kHz 125 kHz 156 kHz
1 1 0 0 φ/160 31.3 kHz 50.0 kHz 62.5 kHz 100 kHz 125 kHz
1 1 0 1 φ/200 25.0 kHz 40.0 kHz 50.0 kHz 80.0 kHz 100 kHz
1 1 1 0 φ/224 22.3 kHz 35.7 kHz 44.6 kHz 71.4 kHz 89.3 kHz
1 1 1 1 φ/256 19.5 kHz 31.3 kHz 39.1 kHz 62.5 kHz 78.1 kHz
Notes: 1. Out of the range of the I
2
C bus interface specification (normal mode: 100 kHz in max,
and high-speed mode: 400 kHz in max).
2. Supported only by the H8S/2239 Group.
3. The H8S/2258 Group is out of operation.