原标题：Microchip 的高性能处理器解决方案

　　PIC18F4XK20入门套件板瑶瑶应用PIC18F46K20微控制器。

　　PIC18F4XK20入门工具包是一个专为演示和开发工具可以应用于希望迁移到新的PIC18F4XK20/2XK20系列平台的用户。该板是专为一般用途的应用而设计，包括各种微控制器外设硬件来行使。

　　基本特性：

　　High Performance RISC CPU:

　　C Compiler Optimized Architecture:

　　Optional extended instruction set designed to optimize re-entrant code

　　Up to 1024 bytes Data EEPROM

　　Up to 64 Kbytes Linear program memory addressing

　　Up to 3936 bytes Linear data memory addressing

　　Up to 16 MIPS operation

　　16-bit wide instructions, 8-bit wide data path

　　Priority levels for interrupts

　　31-level, software accessible hardware stack

　　8 x 8 single-cycle hardware multiplier

　　Flexible Oscillator Structure:

　　Precision 16 MHz internal oscillator block:

　　Factory calibrated to ± 1%

　　Software selectable frequencies range of 31 kHz to 16 MHz

　　64 MHz performance available using PLL

　　no external components required

　　Four crystal modes up to 64 MHz

　　Two external clock modes up to 64 MHz

　　4X Phase Lock Loop (PLL)

　　Secondary oscillator using Timer1 @ 32 kHz

　　Fail-Safe Clock Monitor:

　　Allows for safe shutdown if peripheral clock stops

　　Two-Speed Oscillator Start-up

　　方案描述：

　　The PIC18F4XK20/2XK20 is a new family of microcontrollers that take advantage of

　　Microchip’s latest process technology. Among the most notable of the new features are:

　　• lower power consumption

　　• high-performance operation and

　　• low-cost

　　Several firmware demos that showcase some of the features are included, as well as

　　a PICkit™ 2 Development Programmer, which can be used to download the demos

　　onto the development board.The hardware included on the board allows for development as well. The microcontroller that is populated on the board, the PIC18F46K20, is the superset of the PIC18F4XK20/2XK20 family. Included on the board are various analog and digital circuitry used in microcontroller applications, in addition to a header which breaks out all signal lines foranalysis or interfacing to external devices.

　　参考原理图：

　　原理图1

　　原理图2

　　原理图3

　　原理图4

　　原理图5