ADUC7023BCPZ62I-R7 datasheet(34/98 Pages) AD

34 / 98 page

ADuC7023

Data Sheet

Rev. H | Page 34 of 98

ADCCN Register

Name:

ADCCN

Address:

0xFFFF0508

Default value:

0x01

Access:

Read/write

Function:

ADCCN is an ADC negative channel

selection register. This MMR is described in

Table 26.

Table 26. ADCCN MMR Bit Designation

Bit

Value

Description

7 to 5

Reserved.

4 to 0

Negative channel selection bits.

00000

ADC0.

00001

ADC1.

00010

ADC2.

00011

ADC3.

00100

ADC4.

00101

ADC5.

00110

ADC6.

00111

ADC7.

01000

ADC8.

01001

ADC9.

01010

ADC10.

01011

Reserved

01100

ADC12.

01101

Reserved

01110

Reserved

01111

DAC1.

10000

Temperature sensor.

10001

AGND (self-diagnostic feature).

10010

Internal reference (self-diagnostic feature).

10011

Reserved

Others

Reserved.

ADCSTA Register

Name:

ADCSTA

Address:

0xFFFF050C

Default Value:

0x00

Access:

Read

Function:

ADCSTA is an ADC status register that

indicates when an ADC conversion result

is ready. The ADCSTA register contains

only one bit, ADCReady (Bit 0),

representing the status of the ADC. This

bit is set at the end of an ADC conversion,

generating an ADC interrupt. It is cleared

automatically by reading the ADCDAT

MMR. When the ADC is performing a

conversion, the status of the ADC can be

read externally via the ADCBUSY pin. This

pin is high during a conversion. When the

conversion is finished, ADCBUSY goes back

low. This information can be available on

P0.0 (see the General-Purpose

Input/Output section) if enabled in the

ADCCON register.

ADCDAT Register

Name:

ADCDAT

Address:

0xFFFF0510

Default value:

0x00000000

Access:

Read

Function:

ADCDAT is an ADC data result register.

Hold the 12-bit ADC result as shown in

Figure 22.

ADCRST Register

Name:

ADCRST

Address:

0xFFFF0514

Default Value:

0x00

Access:

Read/write

Function:

ADCRST resets the digital interface of the

ADC. Writing any value to this register

resets all the ADC registers to their default

value.

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