PIC18F2455/2550/4455/4550
28/40/44-Pin High-Performance, Enhanced Flash USB
Microcontrollers with nanoWatt Technology
Universal Serial Bus Features:
• USB V2.0 Compliant SIE
• Low-speed (1.5 Mb/s) and full-speed (12 Mb/s)
• Supports control, interrupt, isochronous and bulk
transfers
• Supports up to 32 endpoints (16 bidirectional)
• 1-Kbyte dual access RAM for USB
• On-board USB transceiver with on-chip voltage
regulator
• Interface for off-chip USB transceiver
• Streaming Parallel Port (SPP) for USB streaming
transfers (40/44-pin devices only)
Peripheral Highlights:
•
•
•
•
High current sink/source: 25 mA/25 mA
Three external interrupts
Four Timer modules (Timer0 to Timer3)
Up to 2 Capture/Compare/PWM (CCP) modules:
- Capture is 16-bit, max. resolution 6.25 ns (T
CY
/16)
- Compare is 16-bit, max. resolution 100 ns (T
CY
)
- PWM output: PWM resolution is 1 to 10-bit
Enhanced Capture/Compare/PWM (ECCP) module:
- Multiple output modes
- Selectable polarity
- Programmable dead-time
- Auto-Shutdown and Auto-Restart
Addressable USART module:
- LIN bus support
Master Synchronous Serial Port (MSSP) module
supporting 3-wire SPI™ (all 4 modes) and I
2
C™
Master and Slave modes
10-bit, up to 13-channels Analog-to-Digital Converter
module (A/D) with programmable acquisition time
Dual analog comparators with input multiplexing
•
Power Managed Modes:
•
•
•
•
•
•
•
•
Run: CPU on, peripherals on
Idle: CPU off, peripherals on
Sleep: CPU off, peripherals off
Idle mode currents down to 5.8
µA
typical
Sleep current down to 0.1
µA
typical
Timer1 oscillator: 1.1
µA
typical, 32 kHz, 2V
Watchdog Timer: 2.1
µA
typical
Two-Speed Oscillator Start-up
•
•
•
•
Special Microcontroller Features:
• C compiler optimized architecture with optional
extended instruction set
• 100,000 erase/write cycle Enhanced Flash
program memory typical
• 1,000,000 erase/write cycle data EEPROM
memory typical
• Flash/data EEPROM retention: > 40 years
• Self-programmable under software control
• Priority levels for interrupts
• 8 x 8 Single Cycle Hardware Multiplier
• Extended Watchdog Timer (WDT):
- Programmable period from 41 ms to 131s
• Programmable Code Protection
• Single-supply 5V In-Circuit Serial Programming™
(ICSP™) via two pins
• In-Circuit Debug (ICD) via two pins
• Wide operating voltage range (2.0V to 5.5V)
EAUSART
MSSP
I/O
10-bit
A/D
(ch)
10
10
13
13
CCP/
ECCP
(PWM)
2/0
2/0
1/1
1/1
SPP
SPI
Y
Y
Y
Y
Master
I
2
C
Y
Y
Y
Y
Comparators
2
2
2
2
Flexible Oscillator Structure:
• Five Crystal modes, including High-Precision PLL
for USB
• Two External RC modes, up to 4 MHz
• Two External Clock modes, up to 40 MHz
• Internal oscillator block:
- 8 user selectable frequencies, from 31 kHz to 8 MHz
- User tunable to compensate for frequency drift
• Secondary oscillator using Timer1 @ 32 kHz
• Fail-Safe Clock Monitor
- Allows for safe shutdown if any clock stops
Program Memory
Device
FLASH
(bytes)
24K
32K
24K
32K
Data Memory
# Single-
SRAM EEPROM
Word
(bytes) (bytes)
Instructions
12288
16384
12288
16384
2048
2048
2048
2048
256
256
256
256
Timers
8/16-bit
1/3
1/3
1/3
1/3
PIC18F2455
PIC18F2550
PIC18F4455
PIC18F4550
24
24
35
35
No
No
Yes
Yes
1
1
1
1
2003 Microchip Technology Inc.
Advance Information
DS39617A-page 1
Note the following details of the code protection feature on Microchip devices:
•
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
•
•
•
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical
components in life support systems is not authorized except
with express written approval by Microchip. No licenses are
conveyed, implicitly or otherwise, under any intellectual
property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
K
EE
L
OQ
, MPLAB, PIC, PICmicro, PICSTART, PRO MATE and
PowerSmart are registered trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.
FilterLab, microID, MXDEV, MXLAB, PICMASTER, SEEVAL
and The Embedded Control Solutions Company are
registered trademarks of Microchip Technology Incorporated
in the U.S.A.
Accuron, Application Maestro, dsPICDEM, dsPICDEM.net,
ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-
Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
PICC, PICkit, PICDEM, PICDEM.net, PowerCal, PowerInfo,
PowerMate, PowerTool, rfLAB, rfPIC, Select Mode,
SmartSensor, SmartShunt, SmartTel and Total Endurance are
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
Serialized Quick Turn Programming (SQTP) is a service mark
of Microchip Technology Incorporated in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2003, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received QS-9000 quality system
certification for its worldwide headquarters,
design and wafer fabrication facilities in
Chandler and Tempe, Arizona in July 1999
and Mountain View, California in March 2002.
The Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro
®
8-bit MCUs, K
EE
L
OQ
®
code hopping
devices, Serial EEPROMs, microperipherals,
non-volatile memory and analog products. In
addition, Microchip’s quality system for the
design and manufacture of development
systems is ISO 9001 certified.
DS39617A-page 5
Advance Information
2003 Microchip Technology Inc.
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