AT91SAM7S128-AI datasheet(4/32 Pages) ATMEL

4 / 32 page

AT91SAM7S128 Summary Preliminary

6116AS–ATARM–20-Oct-04

Signal Description

Table 1. Signal Description List

Signal Name

Function

Type

Active

Level

Comments

Power

VDDIN

Voltage Regulator Power Supply Input

Power

3.0V to 3.6V

VDDOUT

Voltage Regulator Output

Power

1.85V nominal

VDDFLASH

Flash Power Supply

Power

3.0V to 3.6V

VDDIO

I/O Lines Power Supply

Power

3.0V to 3.6V

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

Flash Memory

ERASE

Flash and NVM Configuration Bits Erase

Command

Input

High

Pull-down resistor

Reset/Test

NRST

Microcontroller Reset

I/O

Low

Pull-Up resistor

TST

Test Mode Select

Input

Pull-down resistor

Debug Unit

DRXD

Debug Receive Data

Input

DTXD

Debug Transmit Data

Output

AIC

IRQ0 - IRQ1

External Interrupt Inputs

Input

FIQ

Fast Interrupt Input

Input

AT91SAM7S128-AI Datasheet(PDF) 4 Page - ATMEL Corporation

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