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Chapter 6 A/D Conversion Functions
114
Overview
6-1 Overview
The MN101C117 has an internal A/D converter with 10-bit resolution. A
sample-and-hold circuit is contained on-chip and software can switch the
analog input between channels 0 to 7 (AN0 to AN7).
When the A/D converter is stopped, power consumption can be reduced by
turning off the internal ladder resistors.
Figure 6-1-1 A/D Converter Block Diagram
MUX
MUX
Upper 8 bits of A/D
conversion data
Lower 2 bits of A/D conversion data
Sample & hold
A/D conversion
control
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
VSS
fs/2
fs/4
fs/8
VDD
ANCHS0
ANCHS1
ANCHS2
ANLADE
ANCK0
ANCK1
ANSH0
ANSH1
ANBUF10
ANBUF11
ANBUF12
ANBUF13
ANBUF14
ANBUF15
ANBUF16
ANBUF17
ANBUF06
ANBUF07
ANST
MUX
1/18
3
2
2
10-bit
A/D comparator
ANCTR0
ANCTR1
ANBUF1
ANBUF0
0
7
0
7
0
7
0
7
–
–
–
–
–
–
–
–
–
–
–
–
–
1/6
1/2
fx x 2