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PIC18F45J10 Datasheet(PDF) 10 Page - Microchip Technology

Part # PIC18F45J10
Description  28/40/44-Pin High-Performance, RISC Microcontrollers
Download  368 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F45J10 Datasheet(HTML) 10 Page - Microchip Technology

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PIC18F45J10 FAMILY
DS39682E-page 8
© 2009 Microchip Technology Inc.
1.2
Other Special Features
• Communications:
The PIC18F45J10 family
incorporates a range of serial communication
peripherals, including 1 independent Enhanced
USART and 2 Master SSP modules capable of
both SPI and I2C (Master and Slave) modes of
operation. Also, one of the general purpose I/O
ports can be reconfigured as an 8-bit Parallel
Slave Port for direct processor-to-processor
communications.
• Self-Programmability: These devices can write
to their own program memory spaces under
internal software control. By using a bootloader
routine, it becomes possible to create an
application that can update itself in the field.
• Extended Instruction Set: The PIC18F45J10
family introduces an optional extension to the
PIC18 instruction set, which adds 8 new instruc-
tions and an Indexed Addressing mode. This
extension, enabled as a device configuration
option, has been specifically designed to optimize
re-entrant application code originally developed in
high-level languages, such as C.
• Enhanced CCP module: In PWM mode, this
module provides 1, 2 or 4 modulated outputs for
controlling half-bridge and full-bridge drivers.
Other features include Auto-Shutdown, for
disabling PWM outputs on interrupt or other select
conditions and Auto-Restart, to reactivate outputs
once the condition has cleared.
• Enhanced Addressable USART: This serial
communication module is capable of standard
RS-232 operation and provides support for the
LIN/J2602 protocol. Other enhancements include
automatic baud rate detection and a 16-bit Baud
Rate Generator for improved resolution.
• 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, reduce 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 24.0 “Electrical Characteristics”
for
time-out periods.
1.3
Details on Individual Family
Members
Devices in the PIC18F45J10 family are available in
28-pin and 40/44-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 five
ways:
1.
Flash
program
memory
(16 Kbytes
for
PIC18F24J10/44J10 devices and 32 Kbytes for
PIC18F25J10/45J10).
2.
A/D channels (10 for 28-pin devices, 13 for
40/44-pin devices).
3.
I/O ports (3 bidirectional ports on 28-pin devices,
5 bidirectional ports on 40/44-pin devices).
4.
CCP and Enhanced CCP implementation
(28-pin devices have 2 standard CCP mod-
ules, 40/44-pin devices have one standard CCP
module and one ECCP module).
5.
Parallel Slave Port (present only on 40/44-pin
devices).
6.
One MSSP module for PIC18F24J10/25J10
devices
and
2
MSSP
modules
for
PIC18F44J10/45J10 devices
7.
Parts designated with an “F” part number (i.e.,
PIC18F25J10) have a minimum VDD of 2.7 volts,
whereas parts designated with an “LF” part
number (i.e., PIC18LF25J10) can operate
between 2.0-3.6 volts on VDD; however,
VDDCORE should never exceed VDD.
All of the other features for devices in this family are
identical. These are summarized in Table 1-1.
The pinouts for all devices are listed in Table 1-2 and
Table 1-3.
The PIC18F45J10 family of devices provides an on-chip
voltage regulator to supply the correct voltage levels to
the core. Parts designated with an “F” part number (such
as PIC18F25J10) have the voltage regulator enabled.
These parts can run from 2.7-3.6 volts on VDD but should
have the VDDCORE pin connected to VSS through a low-
ESR capacitor. Parts designated with an “LF” part
number (such as PIC18LF24J10) do not enable the
voltage regulator. An external supply of 2.0-2.7 Volts has
to be supplied to the VDDCORE pin while 2.0-3.6 Volts
can be supplied to VDD (VDDCORE should never exceed
VDD). See Section 21.3 “On-Chip Voltage Regulator”
for more details about the internal voltage regulator.


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