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Architectural Overview

3.3-V supply brown-out detection and reporting via interrupt or reset

Flexible Reset Sources

Power-on reset (POR)

Reset pin assertion

Brown-out (BOR) detector alerts to system power drops

Software reset

Watchdog timer reset

Internal low drop-out (LDO) regulator output goes unregulated

Industrial and extended temperature 100-pin RoHS-compliant LQFP package

Industrial-range 108-ball RoHS-compliant BGA package

1.2Target Applications

Remote monitoring

Electronic point-of-sale (POS) machines

Test and measurement equipment

Network appliances and switches

Factory automation

HVAC and building control

Gaming equipment

Motion control

Medical instrumentation

Fire and security

Power and energy

Transportation

1.3High-Level Block Diagram

Figure 1-1 on page 35 depicts the features on the Stellaris® LM3S6965 microcontroller.

34

November 16, 2008

Preliminary

LM3S6965 Microcontroller

Figure 1-1. Stellaris® LM3S6965 Microcontroller High-Level Block Diagram

JTAG/SWD

ARM® Cortex™-M3 DCode bus Flash

(256 KB)

(50 MHz)

System

Control and ICode bus

Clocks

NVIC

 

System Bus

 

LM3S6965

 

 

 

Bridge

 

SRAM

 

 

(64 KB)

 

 

 

 

 

 

 

 

SYSTEM PERIPHERALS

Hibernation

Watchdog

Module

Timer

GPIOs

General-

Purpose

(0-42)

Timers (4)

 

I2C

(2)

Ethernet

Advanced Peripheral Bus (APB)

SERIAL PERIPHERALS

UARTs

(3)

SSI

(1)

ANALOG PERIPHERALS

Analog

ADC

Comparators

Channels

(2)

(4)

 

MOTION CONTROL PERIPHERALS

PWM

QEI

(6)

(2)

November 16, 2008

35

Preliminary

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