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HD404344R Datasheet, PDF (77/102 Pages) Renesas Technology Corp – 4-bit microcomputer has an A/D converter
HD404344R Series/HD404394 Series
A/D mode register 1 (AMR1: $019)
Bit
Initial value
Read/Write
Bit name
3
0
W
AMR13
2
0
W
AMR12
1
0
W
AMR11
0
0
W
AMR10
AMR12
0
1
AMR13
0
1
R32/AN2 Mode Selection
R32
AN2
R33/AN3 Mode Selection
R33
AN3
AMR10*
0
1
R30/AN0 Mode Selection
R30
AN0
AMR11
0
1
R31/AN1 Mode Selection
R31
AN1
Note: * Available for the HD404344R series and HD4074344, but not available for the HD404394 series.
Figure 53 A/D Mode Register 1 (AMR1)
A/D mode register 2 (AMR2: $01A)
Bit
Initial value
Read/Write
Bit name
3
2
1
0
—
—
—
0
—
—
—
W
Not used Not used Not used AMR20
AMR20
0
1
Conversion Time
34 tcyc
67 tcyc
Figure 54 A/D Mode Register 2 (AMR2)
75