6

AT91SAM7A2 - Summary

6021AS–ATARM–03/04

Note:

1. Values in brackets are the values at reset (H = High, L = Low, Z = High impedance state).

Timer T1

T1TIOA/MPIO

Capture/waveform I/O

I/O

(Z)

Multiplexed with a general purpose I/O

T1TIOB/MPIO

Trigger/waveform I/O

I/O

(Z)

Multiplexed with a general purpose I/O

T0TIOCLK/MPIO

External clock/trigger/input

I/O

(Z)

Multiplexed with a general purpose I/O

ADC0

ANA0IN[7:0]

Analog input

I

VREFP0

Positive voltage reference

I

ADC1

ANA1IN[7:0]

Analog input

I

VREFP1

Positive voltage reference

I

SPI

SPCK/MPIO

SPI clock line

I/O

(Z)

Multiplexed with a general purpose I/O

MISO/MPIO

SPI master in slave out

I/O

(Z)

Multiplexed with a general purpose I/O

MOSI/MPIO

SPI master out slave in

I/O

(Z)

Multiplexed with a general purpose I/O

NPCS[3:1]/MPIO

SPI chip select

I/O

(Z)

Multiplexed with a general purpose I/O

NPCS0/NSS/MPIO SPI chip select (slave input)

I/O

(Z)

Multiplexed with a general purpose I/O

CAN0

CANRX0

CAN0 receive line

I

L

CANTX0

CAN0 transmit line

O

L (H)

CAN1

CANRX1

CAN1 receive line

I

L

CANTX1

CAN1 transmit line

O

L (H)

CAN2

CANRX2

CAN2 receive line

I

L

CANTX2

CAN2 transmit line

O

L (H)

CAN3

CANRX3

CAN3 receive line

I

L

CANTX3

CAN3 transmit line

O

L (H)

JTAG

SCANEN

Scan enable

I

H

Internal pull-down (connected GND or leave

unconnected)

TDI

Test Data In

I

Schmitt trigger, internal pull-up

TDO

Test Data Out

O

TMS

Test Mode Select

I

Schmitt trigger, internal pull-up

TCK

Test Clock

I

Schmitt trigger, internal pull-up

TEST

Factory Test

I

H

Internal pull-down (connected GND or leave

unconnected)

Power

Supplies

VDDCORE

Core Power Supply

-

3.3V

VDDANA

Analog Power Supply

-

3.3V

VDDIO

I/O Lines Power Supply

-

3.3V to 5V

GND

Ground

-

Table 2. Signal Description (Continued)

Module

Name

Function

Type

Active

Level Comments