AT91SAM9G45(2009) Просмотр технического описания (PDF) - Atmel Corporation

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Компоненты Описание

производитель

AT91SAM9G45
(Rev.:2009)

AT91 ARM Thumb-based Microcontrollers

Atmel Corporation 

Table 3-1. Signal Description List (Continued)

Signal Name

AD3YM

GPAD4-GPAD7

TSADTRG

TSADVREF

Function

Analog input channel 3 or

Touch Screen Left channel

Analog Inputs

ADC Trigger

ADC Reference

Type

Analog

Analog

Input

Analog

Active

Level

Reference

Voltage Comments

VDDANA Multiplexed with AD3

VDDANA

VDDANA

VDDANA

Notes:

1. Refer to peripheral multiplexing tables in Section 8.4 “Peripheral Signals Multiplexing on I/O Lines” for these signals.

2. When configured as an input, the NRST pin enables asynchronous reset of the device when asserted low. This allows con-

nection of a simple push button on the NRST pin as a system-user reset.

3. Programming of this pull-up resistor is performed independently for each I/O line through the PIO Controllers. After reset, all

the I/O lines default as inputs with pull-up resistors enabled, except those which are multiplexed with the External Bus Inter-

face signals that require to be enabled as Peripheral at reset. This is explicitly indicated in the column “Reset State” of the

peripheral multiplexing tables.

10 AT91SAM9G45

6438D–ATARM–13-Oct-09

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