This is a data sheet about PIC18F2455/2550/4455/4550 products published by Microchip Technology Inc. in 2004.
The PIC18F2455/2550/4455/4550 family are 28/40/44‑pin high‑performance flash USB microcontrollers with nanoWatt technology. They include an on‑chip USB transceiver, multiple power‑managed modes, and a wide range of peripherals such as ADC, comparators, hardware multiplier and enhanced PWM modules.
The document provides detailed information on oscillator configurations, memory organization, USB capabilities, peripheral modules, electrical characteristics, packaging options and migration guides for developers and system designers.
| USB compliance | USB V2.0 |
|---|---|
| Supported USB speeds | Low Speed 1.5 Mb/s, Full Speed 12 Mb/s |
| Maximum USB endpoints | 32 endpoints (16 bidirectional) |
| USB RAM | 1 KB dual‑access |
| Idle mode current | 5.8 µA typical |
| Sleep mode current | 0.1 µA typical |
| High‑current I/O sink/source | 25 mA each |
| External interrupts | 3 |
| Timer modules | 4 (Timer0‑Timer3) |
| Capture/Compare/PWM modules | 2 |
| ADC resolution | 10‑bit, up to 13 channels |
| Analog comparators | 2 |
| Hardware multiplier | 8 × 8 single‑cycle |
| Operating voltage range | 2.0 V to 5.5 V |
| Industrial temperature range | -40 °C to +85 °C |
The devices support Low Speed (1.5 Mb/s) and Full Speed (12 Mb/s) USB operation.
Typical sleep mode current consumption is 0.1 µA.
It can handle up to 32 USB endpoints, with 16 bidirectional pairs.