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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 ¨C namely, high computational performance at an economical price ¨C 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 ¨C 40 MHz osc./clock input

- 4 MHz ¨C 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 ¨C 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) ¨C 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