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　　邦凯科技长期专业提供PIC18F2680芯片解密等PIC18系列芯片解密服务。针对PIC18F2680芯片解密，本文我们将首先对PIC18F2680芯片的主要性能特征进行简单介绍，供大家做技术理解和分析。
　　PIC18F2680 features
　　Power Managed Modes:
　　Run: CPU on, peripherals on
　　Idle: CPU off, peripherals on
　　Sleep: CPU off, peripherals off
　　Idle mode currents down to 5.8 μA typical
　　Sleep mode currents down to 0.1 μA typical
　　Timer1 Oscillator: 1.1 μA, 32 kHz, 2V
　　Watchdog Timer: 2.1 μA
　　Two-Speed Oscillator Start-up
　　Flexible Oscillator Structure:
　　Four Crystal modes, up to 40 MHz
　　4x Phase Lock Loop (PLL) - available for crystal and internal oscillators
　　Two External RC modes, up to 4 MHz
　　Two External Clock modes, up to 40 MHz
　　Internal oscillator block:
　　- 8 user selectable frequencies, from 31 kHz to 8 MHz
　　- Provides a complete range of clock speeds,from 31 kHz to 32 MHz when used with PLL
　　- User tunable to compensate for frequency drift
　　Secondary oscillator using Timer1 @ 32 kHz
　　Fail-Safe Clock Monitor
　　- Allows for safe shutdown if peripheral clock stops
　　Special Microcontroller Features:
　　C compiler optimized architecture with optional extended instruction set
　　100,000 erase/write cycle Enhanced Flash program memory typical
　　1,000,000 erase/write cycle Data EEPROM memory typical
　　Flash/Data EEPROM Retention: > 40 years
　　Self-programmable under software control
　　Priority levels for interrupts
　　8 x 8 Single Cycle Hardware Multiplier
　　Extended Watchdog Timer (WDT):
　　- Programmable period from 41 ms to 131s
　　Single-Supply 5V In-Circuit Serial
　　Programming? (ICSP?) via two pins
　　In-Circuit Debug (ICD) via two pins
　　Wide operating voltage range: 2.0V to 5.5V
　　Peripheral Highlights:
　　High current sink/source 25 mA/25 mA
　　Three external interrupts
　　One Capture/Compare/PWM (CCP1) module
　　Enhanced Capture/Compare/PWM (ECCP1) module (40/44-pin devices only):
　　- One, two or four PWM outputs
　　- Selectable polarity
　　- Programmable dead time
　　- Auto-Shutdown and Auto-Restart
　　Master Synchronous Serial Port (MSSP) module supporting 3-wire SPI (all 4 modes) and I2C?
　　Master and Slave modes
　　Enhanced Addressable USART module:
　　- Supports RS-485, RS-232 and LIN 1.3
　　- RS-232 operation using internal oscillator block (no external crystal required)
　　- Auto-Wake-up on Start bit
　　- Auto-Baud Detect
　　10-bit, up to 11-channel Analog-to-Digital
　　Converter module (A/D), up to 100 Ksps
　　- Auto-acquisition capability
　　- Conversion available during Sleep
　　Dual analog comparators with input multiplexing
　　ECAN Module Features:
　　Message bit rates up to 1 Mbps
　　Conforms to CAN 2.0B ACTIVE Specification
　　Fully backward compatible with PIC18XXX8 CAN modules
　　Three modes of operation:
　　- Legacy, Enhanced Legacy, FIFO
　　Three dedicated transmit buffers with prioritization
　　Two dedicated receive buffers
　　Six programmable receive/transmit buffers
　　Three full 29-bit acceptance masks
　　16 full 29-bit acceptance filters w/ dynamic association
　　DeviceNet? data byte filter support
　　Automatic remote frame handling
　　Advanced error management features