DEVICE OVERVIEW This document contains device-specific information for the following devices: • PIC18F6390 • PIC18F8390 • PIC18F6490 • PIC18F8490 This family offers the advantages of all PIC18 microcontrollers – namely, high computational performance at an economical price. In addition to these features, the PIC18F6390/6490/8390/8490 family introduces design enhancements that make these microcontrollers a logical choice for many high-performance, power-sensitive applications. LCD Driver Module Features: • Direct Driving of LCD Panel • Up to 48 Segments: Software Selectable • Programmable LCD Timing module: - Multiple LCD timing sources available - Up to 4 commons: Static, 1/2, 1/3 or 1/4 multiplex - Static, 1/2 or 1/3 bias configuration • Can drive LCD Panel while in Sleep mode Power-Managed Modes: • Run: CPU On, Peripherals On • Idle: CPU Off, Peripherals On • Sleep: CPU Off, Peripherals Off • Run mode Currents Down to 14.0 μA Typical • Idle mode Currents Down to 5.8 μA Typical • Sleep Current Down to 0.1 μA Typical • Timer1 Oscillator: 1.8 μA, 32 kHz, 2V • Watchdog Timer: 2.1 μA • Two-Speed Oscillator Start-up Flexible Oscillator Structure: • Four Crystal modes: - LP: up to 200 kHz - XT: up to 4 MHz - HS: up to 40 MHz - HSPLL: 4-10 MHz (16-40 MHz internal) • 4x Phase Lock Loop (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 shut down of device if primary or secondary clock fails Peripheral Highlights: • High-Current Sink/Source 25 mA/25 mA • Four External Interrupts • Four Input Change Interrupts • Four 8-Bit/16-Bit Timer/Counter modules • Real-Time Clock (RTC) Software module: - Configurable 24-hour clock, calendar, automatic 100-year or 12800-year, day-of-week calculator - Uses Timer1 • Up to 2 Capture/Compare/PWM (CCP) modules • Master Synchronous Serial Port (MSSP) module supporting 3-Wire SPI (all 4 modes) and I2C™ Master and Slave modes • Addressable USART module: - Supports RS-485 and RS-232 • Enhanced Addressable USART module: - Supports RS-485, RS-232 and LIN 1.2 - Auto-wake-up on Start bit - Auto-Baud Detect • 10-Bit, up to 12-Channel Analog-to-Digital (A/D) Converter module: - Auto-acquisition capability - Conversion available during Sleep • Dual Analog Comparators with Input Multiplexing Special Microcontroller Features: • C Compiler Optimized Architecture: - Optional extended instruction set designed to optimize re-entrant code • 1000 Erase/Write Cycle Flash Program Memory Typical • Flash Retention: 100 Years Typical • Priority Levels for Interrupts • 8 x 8 Single-Cycle Hardware Multiplier • Extended Watchdog Timer (WDT): - Programmable period from 4 ms to 132s - 2% stability over VDD and temperature • In-Circuit Serial Programming™ (ICSP™) via Two Pins • In-Circuit Debug (ICD) via Two Pins • Wide Operating Voltage Range: 2.0V to 5.5V
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