Pics

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 transceiverwith 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 (TCY/16) - Compareis 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, upto 13-channels Analog-to-Digital Converter module (A/D) with programmable acquisition time Dual analog comparators with input multiplexing

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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, 2VWatchdog Timer: 2.1 µA typical Two-Speed Oscillator Start-up

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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 2/01/1 1/1 SPP SPI Y Y Y Y Master I2C 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 usingTimer1 @ 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

# SingleSRAM 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

PIC18F2455/2550/4455/4550
Pin Diagrams

28-Pin SDIP, SOIC

MCLR/VPP/RE3 RA0/AN0 RA1/AN1 RA2/AN2/VREF-/CVREF RA3/AN3/VREF+ RA4/T0CKI/C1OUT RA5/AN4/SS/LVDIN/C2OUT VSS OSC1/CLKI/RA7 OSC2/CLKO/RA6 RC0/T1OSO/T13CKI RC1/T1OSI/CCP2*/UOE RC2/CCP1 VUSB

1 2 3 4 5 6 7 8 9 10 11 12 13 14

28 27 26 25 24 23 22 21 20 19 1817 16 15

RB7/KBI3/PGD RB6/KBI2/PGC RB5/KBI1/PGM RB4/AN11/KBI0/RCV RB3/AN9/CCP2*/VPO RB2/AN8/INT2/VMO RB1/AN10/INT1/SCK/SCL RB0/AN12/INT0/SDI/SDA VDD VSS RC7/RX/DT/SDO RC6/TX/CK D+/VP D-/VM

PIC18F2455

40-Pin PDIP
MCLR/VPP/RE3 RA0/AN0 RA1/AN1 RA2/AN2/VREF-/CVREF RA3/AN3/VREF+ RA4/T0CKI/C1OUT RA5/AN4/SS/LVDIN/C2OUT RE0/CK1SPP/AN5 RE1/CK2SPP/AN6 RE2/OESPP/AN7 AVDD AVSS OSC1/CLKI/RA7...