HD64F2149YV datasheet(691/1075 Pages) RENESAS

691 / 1075 page

Section 20 A/D Converter

Rev. 3.00 Jan 18, 2006 page 663 of 1044

REJ09B0280-0300

20.1.3

Pin Configuration

Table 20.1 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.

Table 20.1

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 power supply pin

AVref

Input

A/D conversion reference voltage

Analog input pin 0

AN0

Input

Analog input channel 0

Analog input pin 1

AN1

Input

Analog input channel 1

Analog input pin 2

AN2

Input

Analog input channel 2

Analog input pin 3

AN3

Input

Analog input channel 3

Analog input pin 4

AN4

Input

Analog input channel 4

Analog input pin 5

AN5

Input

Analog input channel 5

Analog input pin 6

AN6

Input

Analog input channel 6

Analog input pin 7

AN7

Input

Analog input channel 7

A/D external trigger input pin

ADTRG

Input

External trigger input for starting A/D

conversion

Expansion A/D input pins

0 to 15

CIN0 to

CIN15

Input

Expansion A/D conversion input (digital

input pin) channels 0 to 15

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