M306V2EEFS datasheet(151/271 Pages) RENESAS

151 / 271 page

Rev.1.40

Oct 06, 2004 page 151 of 269

M306V2ME-XXXFP, M306V2EEFP

Figure 2.12.2 A-D control register 0

Figure 2.12.3 A-D control register 1

A-D control register 0 (Note 1)

Symbol

Address

When reset

ADCON0

03D616

00000???2

Analog input pin select bit

0 0 0 : Do not set

0 0 1 : Do not set

0 1 0 : AN0 is selected

0 1 1 : AN1 is selected

1 0 0 : AN2 is selected

1 0 1 : AN3 is selected

1 1 0 : AN4 is selected

1 1 1 : AN5 is selected

(Note 2)

CH0

Bit symbol

Bit name

Function

CH1

CH2

A-D operation mode

select bit 0

0 0 : One-shot mode

0 1 : Repeat mode

1 0 : Single sweep mode

1 1 : Repeat sweep mode 0

(Note 2)

Repeat sweep mode 1

MD0

MD1

Reserved bit

Must always be set to “0”

ADST

A-D conversion start flag

0 : A-D conversion disabled

1 : A-D conversion started

Frequency select bit 0

0 : fAD/4 is selected

1 : fAD/2 is selected

CKS0

b2 b1 b0

b4 b3

Notes 1: If the A-D control register is rewritten during A-D conversion, the conversion result is

indeterminate.

2: When changing A-D operation mode, set analog input pin again.

A-D control register 1 (Note)

Symbol

Address

When reset

ADCON1

03D716

0016

Bit name

Function

Bit symbol

A-D sweep pin select bit

SCAN0

SCAN1

MD2

Reserved bit

Most always be set to “0”

VCUT

Vref connect bit

A-D operation mode

select bit 1

0 : Any mode other than repeat sweep

mode 1

1 : Repeat sweep mode 1

0 : Vref not connected

1 : Vref connected

When single sweep and repeat sweep

mode 0 are selected

0 0 : Do not set

0 1 : AN0 and AN1 (2 pins)

1 0 : AN0 to AN3 (4 pins)

1 1 : AN0 to AN5 (6 pins)

b1 b0

When repeat sweep mode 1 is selected

0 0 : Do not set

0 1 : Do not set

1 0 : AN0 (1 pin)

1 1 : AN0 and AN1 (2 pins)

b1 b0

Most always be set to “0”

Frequency select bit 1

0 : fAD/2 or fAD/4 is selected

1 : fAD is selected

CKS1

Note: If the A-D control register is rewritten during A-D conversion, the conversion result is

Reserved bits

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