Datasheet > AT91SAM7S256_0410

AT91SAM7S256_0410

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
爱特美尔 - ATMEL		微控制器
页数	文件大小	规格书
32页	230K
描述
AT91 ARM Thumb-based Microcontrollers

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Signal Description

Table 1. Signal Description List

Active

Level

Signal Name

Function

Type

Comments

Power

VDDIN

Voltage Regulator Power Supply Input

Voltage Regulator Output

Flash Power Supply

I/O Lines Power Supply

Core Power Supply

PLL

Power

Ground

3.0V to 3.6V

1.85V nominal

3.0V to 3.6V

1.65V to 1.95V

VDDOUT

VDDFLASH

VDDIO

VDDCORE

VDDPLL

GND

Ground

Clocks, Oscillators and PLLs

XIN

Main Oscillator Input

Main Oscillator Output

PLL Filter

Input

Output

Input

XOUT

PLLRC

PCK0 - PCK2

Programmable Clock Output

Output

ICE and JTAG

TCK

Test Clock

Input

No pull-up resistor

TDI

Test Data In

TDO

Test Data Out

Test Mode Select

JTAG Selection

Output

Input

TMS

No pull-up resistor

Pull-down resistor

JTAGSEL

Input

Flash Memory

ERASE

Flash and NVM Configuration Bits Erase

Command

Input

High

Low

Pull-down resistor

Reset/Test

NRST

TST

Microcontroller Reset

Test Mode Select

I/O

Pull-Up resistor

Input

Pull-down resistor

Debug Unit

AIC

DRXD

DTXD

Debug Receive Data

Debug Transmit Data

Input

Output

IRQ0 - IRQ1

FIQ

External Interrupt Inputs

Fast Interrupt Input

Input

AT91SAM7S256 Summary Preliminary

6117AS–ATARM–20-Oct-04

1 2 345 6 7...32

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