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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

Section 26.0 “Electrical Characteristics” for

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

two groups are shown in Figure 1-1 and Figure 1-2.

The devices are differentiated from each other in four

ways:

Flash program memory (three sizes, ranging

from 8 Kbytes for PIC18FX3J11 devices to

32 Kbytes for PIC18FX5J11 devices).

Data RAM (1024 bytes for PIC18FX3J11 and

PIC18FX4J11

devices,

2048

bytes

for

PIC18FX5J11 devices).

I/O ports (7 bidirectional ports on 64-pin devices,

9 bidirectional ports on 80-pin devices).

External Memory Bus (implemented in 80-pin

devices only).

All other features for devices in this family are identical.

These are summarized in Table 1-1 and Table 1-2.

The pinouts for all devices are listed in Table 1-3 and

Table 1-4.

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