HD404629R Datasheet, PDF (98/157 Pages) Renesas Technology Corp – AS Microcomputer Incorporating a DTMF Generator Circuit

HD404629R Series
A/D mode register (AMR: $016)
Bit
Initial value
Read/Write
Bit name
3
0
W
AMR3
2
0
W
AMR2
1
—
—
Not used
0
0
W
AMR0
AMR3
0
0
1
1
AMR2
0
1
0
1
Analog input selection
AN₀
AN₁
AN₂
AN₃
AMR0
0
1
Conversion time
34t_cyc
67t_cyc
Figure 82 A/D Mode Register (AMR)
A/D Data Register (ADRL: $017, ADRU: $018): Eight-bit read-only register consisting of a 4-bit lower
digit and 4-bit upper digit. This register is not cleared by reset. After the completion of A/D conversion,
the resultant eight-bit data is held in this register until the start of the next conversion (figures 83, 84, and
85).
ADRU: $018
3
2
1
0
ADRL: $017
3
2
1
0
MSB
Bit 7
LSB
Bit 0
Figure 83 A/D Data Registers (ADRU, ADRL)
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