Renesas M16C Manual De Usuario

Rev.1.10    Jul 01, 2005    page 199 of 318
REJ09B0124-0110

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

16. D/A Converter

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

D/A Control Register 

(1)

Symbol

Address

After Reset

Symbol

Address

After Reset

DACON

03DCh

03D8h
03DAh

00h

b7

b6

b5

b4

b3

b2

b1

b0

D/A0 Output Enable Bit

Bit Symbol

Bit Name

Function

RW

D/A1 Output Enable Bit

DA0
DA1

00h
00h

b7

b0

Function

Output value of D/A conversion

RW

RW

-

RW

RW

DA0E

DA1E

-

(b7-b2)

0 : Output disabled
1 : Output enabled

0 : Output disabled
1 : Output enabled

Nothing is assigned. When write, set to "0".
When read, their contents are "0". 

NOTE:

1. When not using the D/A converter, set the DAiE bit (i = 0, 1) to "0" (output disabled) to reduce the unnecessary 

current consumption in the chip and set the DAi register to "00h" to prevent current from flowing into the R-2R 
resistor ladder.

NOTE:

1. When not using the D/A converter, set the DAiE bit (i = 0, 1) to "0" (output disabled) to reduce the unnecessary 

current consumption in the chip and set the DAi register to "00h" to prevent current from flowing into the R-2R 
resistor ladder.

D/A Register i (i = 0, 1) 

(1)

2R

R

2R

R

2R

R

2R

R

2R

R

2R

R

2R

R

2R

2R

DAiE bit

"1"

"0"

MSB

LSB

DAi register

r

i = 0, 1

NOTE:

1. The above diagram shows an instance in which the DAi register is assigned "2Ah".

"1"

"0"

VREF

AVSS

DAi