PIC18F8722 FAMILY
1.0
DEVICE OVERVIEW
1.1.2
EXPANDED MEMORY
This document contains device specific information for
the following devices:
• PIC18F6527
• PIC18F6622
• PIC18F6627
• PIC18F6722
• PIC18F8527
• PIC18F8622
• PIC18F8627
• PIC18F8722
• PIC18LF6527
• PIC18LF6622
• PIC18LF6627
• PIC18LF6722
• PIC18LF8527
• PIC18LF8622
• PIC18LF8627
• PIC18LF8722
The PIC18F8722 family provides ample room for
application code and includes members with 48, 64,
96 or 128 Kbytes of code space.
•
Data RAM and Data EEPROM:
The PIC18F8722
family also provides plenty of room for application
data. The devices have 3936 bytes of data RAM,
as well as 1024 bytes of data EEPROM, for long
term retention of nonvolatile 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.
This family offers the advantages of all PIC18 micro-
controllers – namely, high computational performance at
an economical price – with the addition of high-
endurance, Enhanced Flash program memory. On top of
these features, the PIC18F8722 family introduces
design enhancements that make these microcontrollers
a logical choice for many high-performance, power
sensitive applications.
1.1.3
MULTIPLE OSCILLATOR OPTIONS
AND FEATURES
1.1
1.1.1
New Core Features
nanoWatt TECHNOLOGY
All of the devices in the PIC18F8722 family offer ten
different oscillator options, allowing users a wide range
of choices in developing application hardware. These
include:
• Four Crystal modes, using crystals or ceramic
resonators
• Two External Clock modes, offering the option of
using two pins (oscillator input and a divide-by-4
clock output) or one pin (oscillator input, with the
second pin reassigned as general I/O)
• Two External RC Oscillator modes with the same
pin options as the External Clock modes
• An internal oscillator block which provides an
8 MHz clock and an INTRC source (approxi-
mately 31 kHz), as well as a range of 6 user
selectable clock frequencies, between 125 kHz to
4 MHz, for a total of 8 clock frequencies. This
option frees the two oscillator pins for use as
additional general purpose I/O.
• A Phase Lock Loop (PLL) frequency multiplier,
available to both the high-speed crystal and inter-
nal oscillator modes, which allows clock speeds of
up to 40 MHz. Used with the internal oscillator, the
PLL gives users a complete selection of clock
speeds, from 31 kHz to 32 MHz – all without using
an external crystal or clock circuit.
All of the devices in the PIC18F8722 family incorporate
a range of features that can significantly reduce power
consumption during operation. Key items include:
•
Alternate Run Modes:
By clocking the controller
from the Timer1 source or the internal oscillator
block, power consumption during code execution
can be significantly reduced.
•
Multiple Idle Modes:
The controller can also run
with its CPU core disabled but the peripherals still
active. In these states, power consumption can be
reduced even further.
•
On-the-fly Mode Switching:
The power-
managed modes are invoked by user code during
operation, allowing the user to incorporate power-
saving ideas into their application’s software
design.
•
Low Consumption in Key Modules:
The
power requirements for both Timer1 and the
Watchdog Timer are minimized. See
for values.
©
2008 Microchip Technology Inc.
DS39646C-page 7
MICROCHIP [ MICROCHIP TECHNOLOGY ]
