HD6432351 datasheet(677/1025 Pages) RENESAS

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Section 15 A/D Converter

Rev. 3.00 Sep 15, 2006 page 643 of 988

REJ09B0330-0300

15.1.3

Pin Configuration

Table 15.1 summarizes the input pins used by the A/D converter.

The AVCC and AVSS pins are the power supply pins for the analog block in the A/D converter. The

Vref pin is the A/D conversion reference voltage pin.

The eight analog input pins are divided into two groups: group 0 (AN0 to AN3), and group 1

(AN4 to AN7).

Table 15.1 A/D Converter Pins

Pin Name

Symbol

I/O

Function

Analog power supply pin

AVCC

Input

Analog block power supply

Analog ground pin

AVSS

Input

Analog block ground and A/D conversion

reference voltage

Reference voltage pin

Vref

Input

A/D conversion reference voltage

Analog input pin 0

AN0

Input

Group 0 analog inputs

Analog input pin 1

AN1

Input

Analog input pin 2

AN2

Input

Analog input pin 3

AN3

Input

Analog input pin 4

AN4

Input

Group 1 analog inputs

Analog input pin 5

AN5

Input

Analog input pin 6

AN6

Input

Analog input pin 7

AN7

Input

A/D external trigger input pin

ADTRG

Input

External trigger input for starting A/D

conversion

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