M16C6NK Datasheet, PDF(231/404 Page) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C6NK Datasheet, PDF (231/404 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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Under development

This document is under development and its contents are subject to change.

M16C/6N Group (M16C/6NK, M16C/6NM)

16. A/D Converter

A/D Control Register 0 (1)

b7 b6 b5 b4 b3 b2 b1 b0

11

Symbol

ADCON0

Address

03D6h

After Reset

00000XXXb

Bit Symbol

CH0

Bit Name

Function

RW

RW

CH1

Analog Input Pin Select Bit Invalid in repeat sweep mode 0 RW

CH2

RW

MD0

MD1

A/D Operation Mode

Select Bit 0

b4 b3

1 1 : Repeat sweep mode 0 or

RW

Repeat sweep mode 1

RW

TRG

Trigger Select Bit

0 : Software trigger

1 : ADTRG trigger

RW

ADST

A/D Conversion Start Flag

0 : A/D conversion disabled

1 : A/D conversion started

RW

CKS0

Frequency Select Bit 0

Refer to NOTE 2 for ADCON2

Register

RW

NOTE:

1. If the ADCON0 register is rewritten during A/D conversion, the conversion result will be indeterminate.

A/D Control Register 1 (1)

b7 b6 b5 b4 b3 b2 b1 b0

1

0

Symbol

ADCON1

Address

03D7h

After reset

00h

Bit Symbol

Bit Name

SCAN0

SCAN1

A/D Sweep Pin Select Bit

MD2

BITS

A/D Operation Mode

Select Bit 1

8/10-Bit Mode Select Bit

CKS1 Frequency Select Bit 1

Function

RW

When repeat sweep mode 0 is selected

b1 b0

RW

0 0 : AN0, AN1 (2 pins)

0 1 : AN0 to AN3 (4 pins)

1 0 : AN0 to AN5 (6 pins)

RW

1 1 : AN0 to AN7 (8 pins) (2)

Set to "0" when repeat sweep

mode 0 is selected

RW

0 : 8-bit mode

1 : 10-bit mode

RW

Refer to NOTE 2 for ADCON2

Register

RW

VCUT VREF Connect Bit (3)

1 : VREF connected

RW

OPA0

OPA1

External Op-Amp

Connection Mode Bit

b7 b6

0 0 : ANEX0 and ANEX1 are not used RW

0 1 : Do not set a value

1 0 : Do not set a value

1 1 : External op-amp connection mode

RW

NOTES:

1. If the ADCON1 register is rewritten during A/D conversion, the conversion result will be indeterminate.

2. AN0_0 to AN_7, and AN2_0 to AN2_7 can be used in same way as AN0 to AN7. Use the ADGSEL1 to ADGSEL0

bits in the ADCON2 register to select the desired pin.

3. If the VCUT bit is reset from "0" (VREF unconnected) to "1" (VREF connected), wait for 1 Âµs or more before

starting A/D conversion.

Figure 16.7 ADCON0 Register and ADCON1 Register in Repeat Sweep Mode 0

Rev.2.00 Nov 28, 2005 page 213 of 378

REJ09B0124-0200

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