
Rev. 1.00, 05/04, page 288 of 544 
Table 13.3  I2C Transfer Rate 
STCR ICMR     
Bits 5 and 6  Bit 5  Bit 4  Bit 3    Transfer Rate 
IICX CKS2 CKS1 CKS0 Clock φ = 5 MHz  φ = 8 MHz  φ = 10 MHz 
0 0 0 0 φ/28  179 kHz  286 kHz  357 kHz 
0 0 0 1 φ/40  125 kHz  200 kHz  250 kHz 
0 0 1 0 φ/48  104 kHz  167 kHz  208 kHz 
0 0 1 1 φ/64  78.1 kHz  125 kHz  156 kHz 
0 1 0 0 φ/80  62.5 kHz  100 kHz  125 kHz 
0 1 0 1 φ/100  50.0 kHz  80.0 kHz  100 kHz 
0 1 1 0 φ/112  44.6 kHz  71.4 kHz  89.3 kHz 
0 1 1 1 φ/128  39.1 kHz  62.5 kHz  78.1 kHz 
1 0 0 0 φ/56  89.3 kHz  143 kHz  179 kHz 
1 0 0 1 φ/80  62.5 kHz  100 kHz  125 kHz 
1 0 1 0 φ/96  52.1 kHz  83.3 kHz  104 kHz 
1 0 1 1 φ/128  39.1 kHz  62.5 kHz  78.1 kHz 
1 1 0 0 φ/160  31.3 kHz  50.0 kHz  62.5 kHz 
1 1 0 1 φ/200  25.0 kHz  40.0 kHz  50.0 kHz 
1 1 1 0 φ/224  22.3 kHz  35.7 kHz  44.6 kHz 
1 1 1 1 φ/256  19.5 kHz  31.3 kHz  39.1 kHz