Overview
The PIC18F2550 is a member of Microchip's PIC18 family, designed for applications requiring USB connectivity and moderate computational power. It combines an 8-bit RISC CPU core with 32 KB of reprogrammable flash memory, making it suitable for iterative development. With integrated USB 2.0 functionality, it eliminates the need for external USB controllers in many designs. The microcontroller operates at speeds up to 48 MHz and includes analog-to-digital converters, timers, and multiple communication interfaces.
Structure and Working Principle
The PIC18F2550 architecture consists of a Harvard-based CPU with a 16-bit instruction set. It executes most instructions in a single clock cycle, achieving up to 12 MIPS at 48 MHz. The USB module implements full-speed (12 Mbps) communication with built-in transceivers. The device features 34 I/O pins with programmable pull-up resistors and interrupt-on-change capabilities. Its memory organization includes flash for program storage, SRAM for data, and EEPROM for non-volatile data retention. Clock options range from internal oscillators to external crystal inputs.
Key Features
USB 2.0 compliance with embedded PHY simplifies peripheral design while reducing component count. The microcontroller offers 25 mA source/sink current per I/O pin, enabling direct drive of LEDs and small relays. Enhanced peripherals include a 10-bit ADC with 13 channels, multiple PWM modules for motor control, and hardware-assisted SPI/I2C interfaces. The nanoWatt technology provides multiple low-power modes for battery-operated applications, with wake-up from sleep via multiple triggers.
Application Areas
Common implementations include USB human interface devices (keyboards, mice), industrial control systems with USB connectivity, and embedded data loggers. The microcontroller serves well in medical devices requiring USB communication and portable instrumentation. Automotive aftermarket applications leverage its robust I/O handling for accessory controllers. Consumer electronics manufacturers use it in smart chargers, gaming peripherals, and home automation controllers where USB host/device capability is advantageous.
Maintenance and Precautions
Proper handling requires ESD protection during installation and programming. Firmware should implement watchdog timers to recover from unexpected lockups. Power supply must stay within 4.2-5.5V range for USB operation. Developers should use the latest MPLAB X IDE with XC8 compiler for optimal code generation. Thermal considerations are minimal under normal operating conditions, but high ambient temperatures may require derating clock speeds or implementing cooling measures.
B2B Procurement Guide
When sourcing PIC18F2550 microcontrollers, verify packaging options (DIP, SOIC, QFN) match production requirements. Lead times for reel packaging may differ from tube or tray options. Consider purchasing pre-programmed units to reduce manufacturing steps. Evaluate distributor inventory against projected demand, as allocation may occur during semiconductor shortages. For prototype quantities, development boards with integrated programmers offer faster evaluation. Always specify the exact part number suffix denoting temperature grade and packaging.
Related Manufacturers
- 主营：可编程逻辑器件、易失性储存器、继电器、接口及驱动IC、电源管理芯片、单片机、模拟芯片、集成电路、滤波器、处理器及微控制器、逻辑芯片、时钟和计时器、存储器、光电子、传感器、放大器、NCE、TI、ST、GD、MICRON、MAXIM、ADI、WINBOND、ON
- 主营：msp40-gdr、封装bga、mic809tuy、pic16f914、pic16f916、pic16f917、pic16f684、pic16f685、pic16f687、pic16f683、pic16f785、pic16f527、pic16f526、pic16c55a、pic10f206、pic10f202、pic10f200、pic16f883、pic16f886、pic16f887、pic-15/55、pic16c54c、pic12f629、pic18f24k、mt2601w/a
- 主营：2.0-3.0mh、tps51275c、48mhz64kb、rtl8211dn、5.5v10.8v、a83asot23、opa2227pa、放大器、sh93p426f、5177984-6、opa2131ua、tb6560ahq、tb135xqfn、稳压器、1376357-8、tda12067h、dl-115bga、调节器、c14100kjl、rda8851ml、ad7541akn、变压器、控制器、lt1054cn8、连接器
- 主营：电源管理、稳压管、微控制器、传感器、模块、继电器、集成电路、稳压器、电容、控制器、连接器、储存IC、MOS管、模数转换芯片ADC、逻辑器件
- 主营：单片机、stm32f103、pcb抄板、画pcb图、dsp芯片、stm32l100、电磁炉、smt贴片、线路板、板抄板、pcba成品、无线充ic、茂ic解密、汽车仪表、电路板pcb、芯片解密、破译芯片、抄电路板、stc15l2k32s2、打磨芯片、加密芯片、解码芯片、upd78f0403ic、无线视频、stc90c58rdstc
- 主营：单片机 MCU、集成电路 IC、存储 IC、逻辑芯片、数据采集芯片、放大器 IC、时钟芯片
- 主营：sfh615abm、irf720pbf、irf740pbf、std3n40k3、ad2s83apz、stp4nk60z、stp20nm60、sn75176bp、irf840pbf、stbv42-ap、bq32000dr、lm5106mmx、rpi-0352e、lsm6dsltr、m41t56m6e、irf530pbf、存储器、烧录器、lm239dr2g、irf640pbf、pdtc114ye、cxdm4060p、irf510pbf、mjd3055t4、stf7nm60n
- 主营：集成电路、光电耦合器、钽电容、逻辑ic、传感器、处理器、控制器、模块、肖特基二极管、场效应管、三极管、整流桥、运算放大器、模拟比较器、铝电解电容、电阻排阻、电源管理、稳压管
- 主营：pt7v4027w、ht93lc46a、microline、tc4469cpd、tusb2046b、tc7660epa、lcda24c-1、rq5rw33ba、kec封装、hvssop-10、模块adi、mdt2005es、封装bga、ucc37321d、uc3842adg、pan3204db、pm7324-bi、irf840pbf、tl062cpwr、mic5021bn、ht93c66-c、bq32000dr、tc7116cpl、ericssont、st6200qnl
- 主营：丝印a1a、变压器、cp2296gmm、ka7806etu、led电平、锂电池、贴片mcu、丝印g3q、bcx5616ta、ax3514asa、cbb电容、sa7527str、tpf144-vr、wm8746eds、丝印cbz、ww1贴片、pca9535pw、封装bga、74vhc08mx、ws05-4r2p、ssm3j09fu、rpf09040b、贴片bga、mb15024gp、ssm3k16fv
- 主营：集成电路IC、二三极管、电源管理芯片、存储IC、运放IC、单片、芯片、电容电阻、电源开关、传感器、连接器、MOS 场效应管、IGBT模块、继电器、GPS定位模块、电源模块、微控制器、接口芯片、数字信号处理器、晶体管
- 主营：单片机
- 主营：红外线、处理器、二极管、排电容、电磁炉、整流桥、排容12pf、电容15pf、排容10pf、电感75nh、hk1005r15j-t、hk16083n3s-t、hk10057n5j-t、贴片光耦、hk100556nj-t、hk16088n2j-t、hk100515nj-t、hk1608r18j-t、输出光电、hk10056n8j-t、hk1608r27j-t、hk160812nj-t、hk100527nj-t、线性稳压、hk160822nj-t
- 主营：amd系列、ad7841bsz、uln2003an、sn74ls00n、ad977brsz、edi系列、sn74ls03n、sn75161bn、ad10242tz、ad7847brz、ad10465bz、ad5764csuz、ad7656bstz、sn74ls145n、ad9920abbcz、opa2333shkj、sn74hct138n、intel系列、sn74ls107an、银河飞腾、mmsz5248bt1g、tms320c25gba、tms320c25gbl、国微电子、ad7572ajrz10
- 主营：单片机