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1-42
HARDWARE
3802 GROUP USER’S MANUAL
FUNCTIONAL DESCRIPTION SUPPLEMENT
Figures 46 shows A-D conversion equivalent cir-
cuit, and Figure 47 shows A-D conversion timing
chart.
Fig. 46 A-D conversion equivalent circuit
Fig. 47 A-D conversion timing chart
Write signal for AD/DA control register
AD conversion completion bit
Sampling clock
50 cycles
V
SS
V
CC
AV
SS
V
CC
AN
0
AN
1
AN
2
AN
3
AN
4
AN
5
AN
6
AN
7
V
REF
AV
SS
AD/DA
control register
Build-in
D-A converter
V
ref
Reference
clock
A-D conversion register
A-D conversion interrupt request
Chopper amplifier
Sampling
clock
V
IN
C
b1
b2
b0
about 2 k