HD404344R Datasheet, PDF (76/102 Pages) Renesas Technology Corp – 4-bit microcomputer has an A/D converter

HD404344R Series/HD404394 Series
4
A/D interrupt
request flag
(IFAD)
A/D mode
register 1
(AMR1)
R3₃/AN₃
R3₂/AN₂
R3₁/AN₁
*1 _(R30/AN0)
V_CC (V_ref)^*2
+
Comp
–
D/A
GND
4
Encoder
A/D mode
register 2
(AMR2)
A/D data
registers
(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)
Notes: 1. Available for the HD404344R series and HD4074344. Not available for the HD404394 series.
2. Connected to V_CC for the HD404344R series and HD4074344. Connected to V_ref for the
HD404394 series.
Figure 52 A/D Converter Block Diagram
74