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Microchip Technology - PIC18F4550

Numéro de référence 18F4550
Description PIC18F4550
Fabricant Microchip Technology 
Logo Microchip Technology 





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18F4550 fiche technique
www.DataSheet4U.com
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)
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
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
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 (TCY/16)
- Compare is 16-bit, max. resolution 100 ns (TCY)
- 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 I2C™
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
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)
Device
Program Memory
Data Memory
FLASH
(bytes)
# Single-
Word
Instructions
SRAM
(bytes)
EEPROM
(bytes)
I/O
10-bit CCP/
A/D ECCP
(ch) (PWM)
SPP
PIC18F2455
PIC18F2550
PIC18F4455
PIC18F4550
24K
32K
24K
32K
12288
16384
12288
16384
2048
2048
2048
2048
256 24 10
256 24 10
256 35 13
256 35 13
2/0 No
2/0 No
1/1 Yes
1/1 Yes
MSSP
SPI
Master
I2C
Y Y1
Y Y1
Y Y1
Y Y1
Timers
8/16-bit
2 1/3
2 1/3
2 1/3
2 1/3
2003 Microchip Technology Inc.
Advance Information
DS39617A-page 1

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