PIC18F6X2X Datasheet, PDF (9/386 Pages) Microchip Technology – 64/80-Pin High Performance, 64-Kbyte Enhanced FLASH Microcontrollers with A/D

1.0 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 PIC18F6X2X/8X2X family also provides
an enhanced range of program memory options and
versatile analog features that make it ideal for complex,
high performance applications.
1.1 Key Features
1.1.1 EXPANDED MEMORY
The PIC18F6X2X/8X2X family provides ample room
for application code, and includes members with
48 Kbytes or 64 Kbytes of code space.
Other memory features are:
• Data RAM and Data EEPROM: The
PIC18F6X2X/8X2X family also provides plenty of
room for application data. The devices have
3840 bytes of data RAM as well as 1024 bytes of
data EEPROM for long term retention of non-volatile
data.
• Memory Endurance: The enhanced FLASH cells
for both program memory and data EEPROM are
rated to last for many thousands of erase/write
cycles - up to 100,000 for program memory, and
1,000,000 for EEPROM. Data retention without
refresh is conservatively estimated to be greater
than 40 years.
1.1.2 EXTERNAL MEMORY INTERFACE
In the unlikely event that 64 Kbytes of program memory
is inadequate for an application, the PIC18F8X2X
members of the family also implement an external
memory interface. This allows the controller’s internal
program counter to address a memory space of up to
2 MBytes, permitting a level of data access that few
8-bit devices can claim.
PIC18F6X2X/8X2X
With the addition of new operating modes, the external
memory interface offers many new options, including:
• Operating the microcontroller entirely from external
memory
• Using combinations of on-chip and external
memory, up to the 2-Mbyte limit
• Using external FLASH memory for reprogrammable
application code or large data tables
• Using external RAM devices for storing large
amounts of variable data
1.1.3 EASY MIGRATION
Regardless of the memory size, all devices share the
same rich set of peripherals, allowing for a smooth
migration path as applications grow and evolve.
The consistent pinout scheme used throughout the
entire family also aids in migrating to the next larger
device. This is true when moving between the 64-pin
members, between the 80-pin members, or even
jumping from 64-pin to 80-pin devices.
1.1.4 OTHER SPECIAL FEATURES
• Communications: The PIC18F6X2X/8X2X family
incorporates a range of serial communication
peripherals, including 2 independent enhanced
USARTs and a Master SSP module capable of both
SPI and I²C (Master and Slave) modes of operation.
Also, for PIC18F6X2X/8X2X devices, one of the
general purpose I/O ports can be reconfigured as an
8-bit parallel slave port for direct processor to
processor communications.
• CCP Modules: All devices in the family incorporate
two Capture/Compare/PWM (CCP) modules and
three enhanced CCP modules to maximize flexibility
in control applications. Up to four different time
bases may be used to perform several different
operations at once. Each of the three ECCPs offer
up to four PWM outputs, allowing for a total of 12
PWMs. The ECCPs also offer many beneficial fea-
tures, including polarity selection, programmable
dead-time, auto shutdown and restart, and
Half-Bridge and Full-Bridge Output modes.
• Analog Features: All devices in the family feature
10-bit A/D converters with up to 16 input channels,
as well as the ability to perform conversions during
SLEEP mode and auto-acquisition conversions.
Also included are dual analog comparators with
programmable input and output configuration, a
programmable Low Voltage Detect module, and a
Programmable Brown-out Reset module.
• Self-programmability: These devices can write to
their own program memory spaces under internal
software control. By using a bootloader routine
located in the protected boot block at the top of
program memory, it becomes possible to create an
application that can update itself in the field.
 2003 Microchip Technology Inc.
Advance Information
DS39612A-page 7