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
