HD404358 Datasheet, PDF (76/102 Pages) Renesas Technology Corp – microcomputer has an A/D converter,

HD404358 Series
A/D Channel Register (ACR: $016): Three-bit write-only register which indicates analog input pin
information, as shown in figure 65.
A/D channel register (ACR: $016)
Bit
Initial value
Read/Write
Bit name
3
—
—
Not used
2
0
W
ACR2
1
0
W
ACR1
0
0
W
ACR0
ACR2 ACR1 ACR0
0
0
0
1
1
0
1
1
0
0
1
1
0
1
Analog Input Selection
AN₀
AN₁
AN₂
AN₃
AN₄
AN₅
AN₆
AN₇
Figure 65 A/D Channel Register (ACR)
A/D Start Flag (ADSF: $02C, Bit 2): One-bit flag that initiates A/D conversion when set to 1. At the
completion of A/D conversion, the converted data is stored in the A/D data register and the A/D start flag is
cleared. Refer to figure 66.
A/D start flag (ADSF: $020, bit 2)
Bit
Initial value
Read/Write
Bit name
3
—
—
Not used
2
0
R/W
ADSF
1
0
0
—
W
—
WDON Not used
A/D Start Flag (ADSF)
0
A/D conversion completed
1
A/D conversion started
WDON
Refer to the description of timers
Figure 66 A/D Start Flag (ADSF)
74