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