AT91SAM7SE512 datasheet(5/47 Pages) ATMEL

5 / 47 page

6222ES–ATARM–15-Dec-09

AT91SAM7SE512/256/32 Preliminary Summary

Signal Description

Table 3-1.

Signal Description List

Signal Name

Function

Type

Active

Level

Comments

Power

VDDIN

Voltage Regulator and ADC Power

Supply Input

Power

3V to 3.6V

VDDOUT

Voltage Regulator Output

Power

1.85V

VDDFLASH

Flash and USB Power Supply

Power

3V to 3.6V

VDDIO

I/O Lines Power Supply

Power

3V to 3.6V or 1.65V to 1.95V

VDDCORE

Core Power Supply

Power

1.65V to 1.95V

VDDPLL

PLL

Power

1.65V to 1.95V

GND

Ground

Clocks, Oscillators and PLLs

XIN

Main Oscillator Input

Input

XOUT

Main Oscillator Output

Output

PLLRC

PLL Filter

Input

PCK0 - PCK2

Programmable Clock Output

Output

ICE and JTAG

TCK

Test Clock

Input

No pull-up resistor

TDI

Test Data In

Input

No pull-up resistor

TDO

Test Data Out

Output

TMS

Test Mode Select

Input

No pull-up resistor.

JTAGSEL

JTAG Selection

Input

Pull-down resistor(1)

Flash Memory

ERASE

Flash and NVM Configuration Bits Erase

Command

Input

High

Pull-down resistor (1)

Reset/Test

NRST

Microcontroller Reset

I/O

Low

Open drain with pull-up resistor (1)

TST

Test Mode Select

Input

High

Pull-down resistor (1)

Debug Unit

DRXD

Debug Receive Data

Input

DTXD

Debug Transmit Data

Output

AIC

IRQ0 - IRQ1

External Interrupt Inputs

Input

FIQ

Fast Interrupt Input

Input

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