DEVICE OVERVIEW
This document contains device specific information for the following devices:
    • PIC18F6585 • PIC18F8585
    • PIC18F6680 • PIC18F8680

PIC18F6X8X devices are available in 64-pin TQFP and 68-pin PLCC packages. PIC18F8X8X devices are available in the 80-pin TQFP package. They are differentiated from each other in four ways:
1. Flash program memory (48 Kbytes for PIC18FX585 devices, 64 Kbytes for PIC18FX680)
2. A/D channels (12 for PIC18F6X8X devices, 16 for PIC18F8X8X)
3. I/O ports (7 on PIC18F6X8X devices, 9 on PIC18F8X8X)
4. External program memory interface (present only on PIC18F8X8X devices)

High-Performance RISC CPU:
• Source code compatible with the PIC16 and PIC17 instruction sets
• Linear program memory addressing to 2 Mbytes
• Linear data memory addressing to 4096 bytes
• 1 Kbyte of data EEPROM
• Up to 10 MIPs operation:
    - DC – 40 MHz osc./clock input
    - 4 MHz-10 MHz osc./clock input with PLL active
• 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

External Memory Interface (PIC18F8X8X Devices Only):
• Address capability of up to 2 Mbytes
• 16-bit interface

Peripheral Features:
• High current sink/source 25 mA/25 mA
• Four external interrupt pins
• Timer0 module: 8-bit/16-bit timer/counter
• Timer1 module: 16-bit timer/counter
• Timer2 module: 8-bit timer/counter
• Timer3 module: 16-bit timer/counter
• Secondary oscillator clock option – Timer1/Timer3
• One Capture/Compare/PWM (CCP) module:
    - Capture is 16-bit, max. resolution 6.25 ns (TCY/16)
    - Compare is 16-bit, max. resolution 100 ns (TCY)
    - PWM output: PWM resolution is 1 to 10-bit
• Enhanced Capture/Compare/PWM (ECCP) module:
    - Same Capture/Compare features as CCP
    - One, two or four PWM outputs
    - Selectable polarity
    - Programmable dead time
    - Auto-shutdown on external event
    - Auto-restart
• Master Synchronous Serial Port (MSSP) module with two modes of operation:
    - 3-wire SPI (supports all 4 SPI modes)
    - I2C™ Master and Slave mode
 • Enhanced Addressable USART module:
    - Supports RS-232, RS-485 and LIN 1.2
    - Programmable wake-up on Start bit
    - Auto-baud detect
• Parallel Slave Port (PSP) module
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