This document introduces the DS39632C PIC18F2455/2550/4455/4550 data sheet from Microchip, which includes 28/40/44-Pin, high-performance, enhanced Flash, USB microcontrollers with nanoWatt technology
The PIC18F2455/2550/4455/4550 family are 28/40/44‑pin high‑performance enhanced‑flash microcontrollers with nanoWatt technology and integrated USB 2.0 support. They offer low‑speed (1.5 Mb/s) and full‑speed (12 Mb/s) USB operation, up to 32 endpoints, on‑chip voltage regulation, and a range of peripheral modules such as timers, PWM, ADC, comparators, and a hardware multiplier.
The datasheet details memory organization (24 KB or 32 KB Flash, 2 KB EEPROM, 256 B SRAM), power‑managed modes (idle current down to 5.8 µA, sleep current down to 0.1 µA), oscillator options, pin assignments for PDIP, SOIC, TQFP, and QFN packages, and electrical specifications covering operating voltage (2.0 V–5.5 V) and temperature ranges (-40 °C to +85 °C industrial, -40 °C to +125 °C extended).
| USB speed support | Low Speed (1.5 Mb/s) and Full Speed (12 Mb/s) |
|---|---|
| Maximum USB endpoints | 32 endpoints (16 bidirectional) |
| Idle mode current | down to 5.8 µA typical |
| Sleep mode current | down to 0.1 µA typical |
| Operating voltage range | 2.0 V to 5.5 V |
| Industrial temperature range | -40 °C to +85 °C |
It supports Low Speed (1.5 Mb/s) and Full Speed (12 Mb/s) USB 2.0 operation.
The microcontrollers can handle up to 32 USB endpoints, which correspond to 16 bidirectional endpoints.
Idle mode current is down to about 5.8 µA typical, while sleep mode current is down to about 0.1 µA typical.
They operate from 2.0 V to 5.5 V, covering both low‑voltage and standard ranges.