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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