This document describes the features and characteristics of the PIC18F2331/2431/4331/4431 series microcontrollers from Microchip Technology Inc. in 2005, including Nav technology, high-performance PWM, and A/D functionality.
The PIC18F2331/2431/4331/4431 series combines the core PIC18 architecture with enhanced flash memory, a high‑speed 10‑bit ADC, power‑control PWM, motion‑feedback and a rich set of peripherals. It targets high‑performance, power‑control and motor‑control applications, offering multiple oscillator options and extensive low‑power modes.
The document provides a complete pin‑out for 28‑, 40‑ and 44‑pin packages, memory organization, timing diagrams, electrical characteristics, and detailed descriptions of each module such as timers, CCP/PWM, SSP, USART, QEI, and watchdog timer. It also includes ordering information, packaging options and contact details for Microchip support. This manual is written in Chinese.
| VDD Operating Range | 4.2 V – 5.5 V (standard) / 2.0 V – 5.5 V (LF) |
|---|---|
| Temperature Range | -40 °C to +85 °C (industrial) |
| Flash Program Memory (max) | 16 KB |
| ADC Channels | Up to 9 channels |
| PWM Output Channels | Up to 4 complementary channels |
| Watchdog Timer Current (typical) | 2.1 µA |
The standard devices operate from 4.2 V to 5.5 V, while the low‑voltage (LF) versions operate from 2.0 V to 5.5 V.
It provides up to four complementary PWM output channels.
They are rated for industrial temperatures from –40 °C to +85 °C.
The device includes up to nine 10‑bit ADC channels.