# PIC18F4550 (Component) ## Description The Microchip PIC18F2455/2550/4455/4550 series comprises high-performance, enhanced flash USB microcontrollers featuring nanoWatt technology. These devices are designed to operate with a wide voltage range (2.0V to 5.5V) and offer a variety of features including USB V2.0 compliant modules supporting low speed (1.5 Mb/s) and full speed (12 Mb/s) communication, up to 32 endpoints, and 1-Kbyte dual access RAM for USB. Additionally, they are equipped with a comprehensive set of peripherals such as high-current sink/source I/O ports, multiple timers, up to 13-channel 10-bit Analog-to-Digital Converters, Enhanced Capture/Compare/PWM (ECCP) modules, and serial communication interfaces including MSSP and EUSART modules. These microcontrollers are particularly suitable for applications requiring connectivity, precise timing, and analog interfacing in power-sensitive designs, thanks to their flexible oscillator structure, power-managed modes, and extended instruction set optimized for C compiler use. The devices' memory configuration includes up to 32K bytes of flash program memory, 2K bytes of RAM, and 256 bytes of EEPROM, supporting a wide range of application requirements. ## Component Details - **Owner:** leon2002 - **Created:** 7/11/2024 - **Last Updated:** 4/14/2025 - **Visibility:** Public - **Datasheet URL:** https://cdn2.flux.ai/copilot-datasheets/pdf-upload-66c11ec450f6a6749a6ab5e7920803cca283a0dc01add599ed7619def0648fcf/27ebc2f28c5f4cf46fa9769ba076be4570434727d55de3d1c798e6fdf6c80926.pdf?GoogleAccessId=graviton-mvp%40appspot.gserviceaccount.com&Expires=4874268272&Signature=kRCajt0xK5zM6TyJ2qoUltDraqniAWxJGW98EXvmm4FNJjeqC1jPo7UyU%2BzPfMVHtj0VmlzTENLPjcwSYDiYt7KCeT%2BvQZ6i4Gvk%2BzlAScFVAwbfEje2aVXy7IFOEWHyZu4Zn7t%2FVv0oI34EcuhN01VtvpcRDKhu%2FZnVLiTAv7axyo2DpIhrZTxEE8GTqD2VOdUaT4sKbamNCPd0wFVTh97kqwHhm4Yfcc%2FmSgtpPcYuVe%2B9deZa1X26J6YJWjWCo4rpHeiqXshINLQ%2FcgFqae%2FFkR9Lk1LEoNL78sfHhTzmxrQROt6GUtr50H17ePzFQ321MJKGNBhFNMhqd5VfzQ%3D%3D - **Manufacturer Name:** Microchip Technology Inc. - **Manufacturer Part Number:** PIC18F4550 - **Package or Case Code:** TQFP - **Part Type:** Microcontroller - **Used in:** 10 projects - **Part Type:** Integrated Circuits - **Sub-Type:** Logic - **Manufacturer:** Microchip - **MPN:** PIC18F4550 - **Package / Case Code:** 32-TQFP - **Pin Count:** 37 - **Logic Function:** AND ## Pins | Pin | Name | Type | |-----|------|------| | 1 | RD4/SPP4 | | | 2 | RA0/AN0 | | | 3 | RA1/AN1 | | | 4 | RA2/AN2/VREF-/CVREF | | | 5 | RA3/AN3/VREF+ | | | 6 | RA4/T0CKI/C1OUT/RCV | | | 7 | RA5/AN4/SS/HLVDIN/C2OUT | | | 8 | VSS | | | 9 | RE3/MCLR/VPP | | | 9 | RE3/MCLR/VPP | | | 10 | OSC2/CLKO/RA6 | | | 11 | RC0/T1OSO/T13CKI | | | 12 | RC1/T1OSI/CCP2(1)/UOE | | | 13 | RC2/CCP1/P1A | | | 14 | RD5/SPP5/P1B | | | 15 | RC4/D-/VM | | | 16 | RC5/D+/VP | | | 17 | RC6/TX/CK | | | 18 | RC7/RX/DT/SDO | | | 19 | RD0/SPP0 | | | 20 | VDD | | | 21 | RB0/AN12/INT0/FLT0/SDI/SDA | | | 22 | RB1/AN10/INT1/SCK/SCL | | | 23 | RB2/AN8/INT2/VMO | | | 24 | RB3/AN9/CCP2(1)/VPO | | | 25 | RB4/AN11/KBI0/CSSPP | | | 26 | RB5/KBI1/PGM | | | 27 | RB6/KBI2/PGC | | | 28 | RB7/KBI3/PGD | | | 31 | RD6/SPP6/P1C | | | 32 | RD7/SPP7/P1D | | | 33 | RE0/AN5/CK1SPP | | | 34 | RE1/AN6/CK2SPP | | | 35 | RE2/AN7/OESPP | | | 38 | RD1/SPP1 | | | 39 | RD2/SPP2 | | | 40 | RD3/SPP3 | | --- *Generated from [https://www.flux.ai/leon2002/pic18f4550~3x](https://www.flux.ai/leon2002/pic18f4550~3x)*