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DEVICE OVERVIEW

This document contains device-specific information for the following devices:

? PIC18F2682

? PIC18F2685

? PIC18F4682

? PIC18F4685

This family of devices offers the advantages of all PIC18 microcontrollers – namely, high computational performance at an economical price – with the addition of high-endurance, Enhanced Flash program memory. In addition to these features, the PIC18F2682/2685/4682/4685 family introduces design enhancements that make these microcontrollers a logical choice for many high-performance, power sensitive applications.

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