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M16C/5L Group, M16C/56 Group
CKS0 (Frequency select bit 0) (b7)
φ AD frequency is selected by a combination of the CKS0 bit in the ADCON0 register, the CKS1 bit in
the ADCON1 register, and bits CKS3 and CKS2 in the ADCON2 register. Select bits CKS2 to CKS0
after setting the CKS3 bit in the ADCON2 register. Note that bits CKS3 and CKS2 can be set
simultaneously. Table 24.5 lists φ AD Frequency.
φ AD Frequency
Table 24.5
CKS3
0
1
Only set the values listed above.
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
CKS2
CKS1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
0
0
0
0
1
0
1
0
1
1
1
1
CKS0
0
fAD(f1) divided by 4
1
fAD(f1) divided by 2
0
fAD(f1)
1
0
fAD(f1) divided by 12
1
fAD(f1) divided by 6
0
fAD(f1) divided by 3
1
0
fAD(fOCO40M) divided by 4
1
fAD(fOCO40M) divided by 2
0
fAD(fOCO40M) divided by 12
1
fAD(fOCO40M) divided by 6
0
fAD(fOCO40M) divided by 3
1
24. A/D Converter
φ AD
Page 623 of 803
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