MN101C115 Datasheet, PDF (128/170 Pages) Panasonic Semiconductor – Request for your special attention and precautions in using the technical information and semiconductors described in this book

Chapter 6 A/D Conversion Functions
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.
ANCTR0
ANCHS0 ⁰
ANCHS1
ANCHS2
ANLADE
ANCK0
ANCK1
ANSH0
ANSH1
7
VDD
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
VSS
ANCTR1 ₀
–
–
–
–
–
–
–
ANST ₇
3
A/D conversion
control
ANBUF1 ANBUF0
0
0
ANBUF10
–
ANBUF11
–
ANBUF12
–
ANBUF13
–
ANBUF14
–
ANBUF15
–
ANBUF16 ANBUF06
ANBUF17 ANBUF07
7
7
MUX
2
Sample & hold
2
Upper 8 bits of A/D
conversion data
10-bit
A/D comparator
Lower 2 bits of A/D conversion data
fs/2
fs/4
fs/8
fx x 2
MUX
1/2
1/6
MUX
1/18
Figure 6-1-1 A/D Converter Block Diagram
114 Overview