HD404358 Datasheet, PDF (74/102 Pages) Renesas Technology Corp – microcomputer has an A/D converter,

HD404358 Series
A/D Converter
The MCU has a built-in A/D converter that uses a sequential comparison method with a resistor ladder. It
can measure eight analog inputs with 8-bit resolution. The block diagram of the A/D converter is shown in
figure 62.
4
A/D interrupt
request flag
(IFAD)
A/D mode
register 1
(AMR1)
AN₀
AN₁
AN₂
AN₃
AN₄
AN₅
AN₆
AN₇
AV_CC
AV_SS
3
A/D mode
register 2
(AMR2)
+
Comp
–
D/A
Encoder
A/D data
register
(ADRU, L)
A/D
controller
Control signal
for conversion
time
A/D start flag
(ADSF)
A/D channel
register (ACR)
I_AD off flag
(IAOF)
Operating mode signal
(1 in stop mode)
Figure 62 A/D Converter Block Diagram
72