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pic32参考手册

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pic技术说明手册,

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PIC32MX Family Reference Manual 2008 Microchip Technology Inc DS61132B Note the following details of the code protection feature on Microchip devices Microchip products meet the specification contained in their particular Microchip Data Sheet Microchip believes that its family of products is one of the most secure families of its kind on the market today when used in the intended manner and under normal conditions There are dishonest and possibly illegal methods used to breach the code pr......

PIC32MX Family Reference Manual © 2008 Microchip Technology Inc. DS61132B Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • • • • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. Microchip is willing to work with the customer who is concerned about the integrity of their code. Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM, PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2008, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. DS61132B-page ii © 2008 Microchip Technology Inc. 1 I n t r o d u c t i o n Section 1. Introduction HIGHLIGHTS This section of the manual contains the following topics: 1.1 Introduction .................................................................................................................... 1-2 1.2 Objective of This Manual ............................................................................................... 1-2 1.3 Device Structure............................................................................................................. 1-2 1.4 Development Support .................................................................................................... 1-4 1.5 Style and Symbol Conventions ...................................................................................... 1-4 1.6 Related Documents ....................................................................................................... 1-6 1.7 Revision History ............................................................................................................. 1-7 © 2008 Microchip Technology Inc. Preliminary DS61127C-page 1-1 PIC32MX Family Reference Manual 1.1 INTRODUCTION Microchip’s PIC32MX series of 32-bit microcontrollers is designed to fulfill customers’ require- ments for enhanced features and performance for their MCU-based applications. Common attributes among all devices in the PIC32MX series are: • Pin, peripheral and source code compatibility with the PIC24F128GAXXX family • MIPS32® M4K™ processor core • Common development tools 1.2 OBJECTIVE OF THIS MANUAL This manual describes the PIC32MX series of 32-bit microcontrollers. It explains the family archi- tecture and operation of the peripheral modules, but does not cover the specifics of each device in the family. Users should refer to the respective device’s data sheet for device-specific details, such as: • Pinout and packaging details • Memory map • List of peripherals included on the device, including multiple instances of peripherals • Device-specific electrical specifications and characteristics 1.3 DEVICE STRUCTURE MCU Core The PIC32MX architecture has been broken down into the following functional blocks: • MCU Core • System Memory • System Integration • Peripherals 1.3.1 The MCU core consists of these essential basic features. • 32-bit RISC MIPS32 M4K Core • Single Cycle ALU • Load-Store Execution Unit • 5-Stage Pipeline • 32-bit Address and 32-bit Data Buses • Two 32-element, 32-bit General Purpose Register Files • FMT – Fixed Mapping Translation Memory Management • FMDU – Fast-Multiply-Divide Unit • MIPS32® Compatible Instruction Set • MIPS16e™ Code Compression Instruction Set Architecture Support System Memory The CPU section of this manual discusses the PIC32MX MCU core. 1.3.2 The system memory provides on-chip nonvolatile Flash memory and volatile SRAM memory, featuring user and protected kernel-segment-partitioning for real-time operating systems. The following sections of this manual discuss the PIC32MX system memory: • Section 3. Memory Organization • Section 5. Flash Programming DS61127C-page 1-2 Preliminary © 2008 Microchip Technology Inc. 1 I n t r o d u c t i o n Section 1. Introduction Flash Memory Technology • The Flash can be used for program memory or data. • The Flash allows program memory to be electrically erased or programmed under software control during normal device operation. • The PIC32MX series has full-speed execution directly from program Flash through the use of on-chip prefetch buffering by the Prefetch module. System Integration • The Flash has the capability to page erase, word or row program. 1.3.3 System integration consists of a comprehensive set of modules and features that tie the MCU core and peripheral modules into a single operational unit. System integration features also provide these advantages: • Decreased system cost, by bringing traditionally off-chip functions into the microcontroller • Increased design flexibility, by adding a wider range of operating modes • Increased system reliability, by enhancing the ability to recover from unexpected events The following sections of this manual discuss the PIC32MX system integration: • Section 3. Memory Organization • Section 4. Prefetch Module • Section 5. Flash Programming • Section 6. Oscillator • Section 7. Resets • Section 8. Interrupts • Section 9. Watchdog Timer and Power-up Timer • Section 10. Power-Saving Modes • Section 31. Direct Memory Access (DMA) Controller with programmable Cyclic Redundancy Check (CRC) Peripherals • Section 32. High-Level Integration (Configuration, Code Protection and Voltage Regulation) • Section 33. Device Programming, Debugging, In-Circuit and In-Circuit Testing 1.3.4 The PIC32MX devices have many peripherals that allow it to interface with the external world. The following sections of this manual discuss the PIC32MX peripherals: • Section 12. I/O Ports • Section 13. Parallel Master Port • Section 14. Timers • Section 15. Input Capture Module • Section 16. Output Compare/Pulse Width Modulation (PWM) Module • Section 17. 10-bit A/D Converter • Section 19. Comparator Module • Section 20. Comparator Voltage Reference Module • Section 21. UART Module • Section 23. SPI Module • Section 24. I2CTM Module • Section 27. USB OTG • Section 29. Real-Time Clock/Calendar (RTCC) Module © 2008 Microchip Technology Inc. Preliminary DS61127C-page 1-3
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