M30620FCAFP datasheet(179/615 Pages) RENESAS

179 / 615 page

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

D-A Converter

1-160

Figure 1.18.2. D-A control register

D-A control register

Symbol

Address

When reset

DACON

03DC16

0016

D-A0 output enable bit

DA0E

Bit symbol

Bit name

Function

R W

0 : Output disabled

1 : Output enabled

D-A1 output enable bit

0 : Output disabled

1 : Output enabled

DA1E

Nothing is assigned.

In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”

D-A register

Symbol

Address

When reset

DAi (i = 0,1)

03D816, 03DA16

Indeterminate

Function

R W

Output value of D-A conversion

VREF

AVSS

DA0

MSB

LSB

D-A0 output enable bit

“0”

“1”

D-A register 0

Note 1: The above diagram shows an instance in which the D-A register is assigned 2A16.

Note 2: The same circuit as this is also used for D-A1.

Note 3: To reduce the current consumption when the D-A converter is not used, set the D-A output enable bit to 0 and set the D-A register to 0016

so that no current flows in the resistors Rs and 2Rs.

“0”

“1”

Figure 1.18.3. D-A converter equivalent circuit

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