HD404369F datasheet(88/117 Pages) RENESAS

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HD404369 Series

Registers for A/D Converter Operation

A/D Mode Register 1 (AMR1: $019): Four-bit write-only register which selects digital or analog ports, as

shown in figure 70.

Bit

Initial value

Read/Write

Bit name

AMR13

AMR12

AMR10

AMR11

AMR10

AN0

A/D mode register 1 (AMR1: $019)

AMR11

AN1

AMR12

R32/AN2 Mode Selection

R32

AN2

AMR13

R33/AN3 Mode Selection

R33

AN3

R30/AN0 Mode Selection

R30

R31/AN1 Mode Selection

R31

Figure 70 A/D Mode Register 1 (AMR1)

A/D Mode register 2 (AMR2: $01A): Three-bit write-only register which is used to set the A/D

conversion period and to select digital or analog ports. Bit 0 of the A/D mode register selects the A/D

conversion period, and bits 1 and 2 select ports R4–R5 as pins AN

4–AN11 in 4-pin units (figure 71).

Bit

Initial value

Read/Write

Bit name

—

Not used

AMR22

AMR20

AMR21

AMR20

67 tcyc

A/D mode register 2 (AMR2: $01A)

AMR21

AN4–AN7

AMR22

R5/AN8–AN11 Pin Selection

AN8–AN11

Conversion Time

34 tcyc

R4/AN4–AN7 Pin Selection

Figure 71 A/D Mode Register 2 (AMR2)

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