7220 datasheet(264/303 Pages) RENESAS

264 / 303 page

7220 Group User’s Manual

APPENDIX

6.7 Control registers

6-45

Fig. 6.7.22 A-D control register 1

b7 b6 b5 b4 b3 b2 b1 b0

A-D control register 1 (AD1) [Address 00EE 16]

After reset RW

A-D Control Register 1

Analog input pin selection

bits

(ADM0, ADM1, ADM2)

Name

Functions

b2 b1 b0

0 : A-D1

1 : A-D2

0 : A-D3

1 : A-D4

0 : A-D5

1 : A-D6

0 :

1 :

Storage bit of comparison

result (ADM4)

0: Input voltage < reference voltage

1: Input voltage > reference voltage

Nothing is assigned. These bits are write disable bits.

When these bits are read out, the values are “0.”

Indeterminate

Do not set.

Nothing is assigned. This bit is a write disable bit.

When this bit is read out, the value is “0.”

R—

Address 00EE16

Fig. 6.7.23 A-D control register 2

b7 b6 b5 b4 b3 b2 b1 b0

A-D control register 2(AD2) [Address 00EF 16]

After reset

A-D Control Register 2

6, 7

Name

Functions

D-A converter set bits

(ADC0, ADC1, ADC2,

ADC3, ADC4, ADC5)

Nothing is assigned. These bits are write disable bits.

When these bits are reed out, the values are “ 0.”

0000

111

1111

: 3/128Vcc

: 5/128Vcc

: 123/128Vcc

: 125/128Vcc

: 127/128Vcc

: 1/128Vcc

R—

Address 00EF16

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