This document is a technical datasheet for the PIC18F2455/2550/4455/4550 series high-performance, enhanced Flash USB microcontrollers produced by Microchip Technology Inc. The series features nanoWatt technology and is suitable for various applications.
The Microchip PIC18F2455/2550/4455/4550 series are high‑performance 8‑bit microcontrollers with integrated USB 2.0 functionality, nanoWatt power management, and a rich set of peripherals. The data sheet provides detailed specifications, pin diagrams, electrical characteristics, and packaging information for the 28‑, 40‑ and 44‑pin variants.
Key sections cover device overview, oscillator options, power‑managed modes, memory organization, USB features, peripheral modules (timers, ADC, comparators, multipliers), and mechanical/electrical characteristics, helping designers select and implement the appropriate device for their applications.
| USB compliance | USB V2.0 Compliant |
|---|---|
| USB speed support | Low Speed (1.5 Mb/s) and Full Speed (12 Mb/s) |
| USB endpoints | Up to 32 endpoints (16 bidirectional) |
| USB RAM | 1‑Kbyte dual‑access RAM |
| Idle mode current | 5.8 µA typical |
| Sleep mode current | 0.1 µA typical |
| Operating voltage range | 2.0 V to 5.5 V |
| Industrial temperature range | -40 °C to +85 °C |
They support Low Speed (1.5 Mb/s) and Full Speed (12 Mb/s) USB operation.
The microcontroller can handle up to 32 USB endpoints, with 16 bidirectional pairs.
Sleep mode current is typically 0.1 µA.
They operate from 2.0 V up to 5.5 V.