DEVICE OVERVIEW

This document contains device specific information for the following devices:

• PIC18F6525

• PIC18F6621

• PIC18F8525

• PIC18F8621

This family 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. The PIC18F6525/6621/8525/8621 family also provides an enhanced range of program memory options and versatile analog features that make it ideal for complex, high performance applications.

High Performance RISC CPU:

• Linear program memory addressing to 64 Kbytes

• Linear data memory addressing to 4 Kbytes

• 1 Kbyte of data EEPROM

• Up to 10 MIPs operation:

   - DC – 40 MHz osc./clock input

   - 4 MHz – 10 MHz osc./clock input with PLL active

• 16-bit wide instructions, 8-bit wide data path

• Priority levels for interrupts

• 31-level, software accessible hardware stack

• 8 x 8 Single-cycle Hardware Multiplier

Peripheral Features:

• High current sink/source 25 mA/25 mA

• Four external interrupt pins

• Timer0 module: 8-bit/16-bit timer/counter

• Timer1 module: 16-bit timer/counter

• Timer2 module: 8-bit timer/counter

• Timer3 module: 16-bit timer/counter

• Timer4 module: 8-bit timer/counter

• Secondary oscillator clock option – Timer1/Timer3

• Two Capture/Compare/PWM (CCP) modules:

   - Capture is 16-bit, max. resolution 6.25 ns (TCY/16)

   - Compare is 16-bit, max. resolution 100 ns (TCY)

   - PWM output: 1 to 10-bit PWM resolution

• Three Enhanced Capture/Compare/PWM (ECCP) modules:

   - Same Capture/Compare features as CCP

   - One, two or four PWM outputs

   - Selectable polarity

   - Programmable dead time

   - Auto-Shutdown on external event

   - Auto-Restart

• Master Synchronous Serial Port (MSSP) module with two modes of operation:

   - 2/3/4-wire SPI (supports all 4 SPI modes)

   - I2C™ Master and Slave mode

• Two Enhanced USART modules:

   - Supports RS-485, RS-232 and LIN 1.2

   - Auto-Wake-up on Start bit

   - Auto-Baud Rate Detect

• Parallel Slave Port (PSP) module

External Memory Interface

(PIC18F8525/8621 Devices Only):

• Address capability of up to 2 Mbytes

• 16-bit interface

Analog Features:

• 10-bit, up to 16-channel Analog-to-Digital Converter (A/D):

   - Auto-Acquisition

   - Conversion available during Sleep

• Programmable 16-level Low-Voltage Detection (LVD) module:

   - Supports interrupt on Low-Voltage Detection

• Programmable Brown-out Reset (BOR)

• Dual analog comparators:

   - Programmable input/output configuration

Special Microcontroller Features:

• 100,000 erase/write cycle Enhanced Flash program memory typical

• 1,000,000 erase/write cycle Data EEPROM memory typical

• 1 second programming time

• Flash/Data EEPROM Retention: > 100 years

• Self-reprogrammable under software control

• Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)

• Watchdog Timer (WDT) with its own On-Chip RC Oscillator for reliable operation

• Programmable code protection

• Power-saving Sleep mode

• Selectable oscillator options including:

   - 4x Phase Lock Loop (PLL) – of primary oscillator

   - Secondary Oscillator (32 kHz) clock input

• In-Circuit Serial Programming™ (ICSP™) via two pins

• MPLAB® In-Circuit Debug (ICD 2) via two pins

CMOS Technology:

• Low power, high-speed Flash technology

• Fully static design

• Wide operating voltage range (2.0V to 5.5V)

• Industrial and Extended temperature ranges