
PIC18F85J11 FAMILY
DS39774D-page 10
2010 Microchip Technology Inc.
1.1.6
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.
The PIC18F85J11 family is also largely pin compatible
with other PIC18 general purpose families, such as the
PIC18F8720 and PIC18F8722. This allows a new
dimension to the evolution of applications, allowing
developers to select different price points within
Microchip’s PIC18 portfolio, while maintaining a similar
feature set.
1.2
Other Special Features
Communications: The PIC18F85J11 family
incorporates a range of serial communication
peripherals, including an Addressable USART, a
separate Enhanced USART that supports LIN
Specification LIN/J2602, and one Master SSP
(MSSP) module capable of both SPI and I2C
(Master and Slave) modes of operation.
CCP Modules: All devices in the family incorporate
two Capture/Compare/PWM (CCP) modules. Up to
four different time bases may be used to perform
several different operations at once.
10-Bit A/D Converter: This module incorporates
programmable acquisition time, allowing for a
channel to be selected and a conversion to be
initiated without waiting for a sampling period and
thus, reducing code overhead.
Extended Watchdog Timer (WDT): This
enhanced version incorporates a 16-bit prescaler,
allowing an extended time-out range that is stable
across operating voltage and temperature. See
time-out periods.
1.3
Details on Individual Family
Members
Devices in the PIC18F85J11 family are available in
64-pin and 80-pin packages. Block diagrams for the
The devices are differentiated from each other in four
ways:
1.
Flash program memory (three sizes, ranging
from 8 Kbytes for PIC18FX3J11 devices to
32 Kbytes for PIC18FX5J11 devices).
2.
Data RAM (1024 bytes for PIC18FX3J11 and
PIC18FX4J11
devices,
2048
bytes
for
PIC18FX5J11 devices).
3.
I/O ports (7 bidirectional ports on 64-pin devices,
9 bidirectional ports on 80-pin devices).
4.
External Memory Bus (implemented in 80-pin
devices only).
All other features for devices in this family are identical.
The pinouts for all devices are listed in
Table 1-3 and