This document describes the features and characteristics of the enhanced flash microcontrollers PIC18F2423/2523/4423/4523 produced by Microchip, including the use of 12-bit A/D converter and nanowatt technology, with pin counts of 28/40/44.
The document provides a complete overview of the PIC18F2423/2523/4423/4523 family, including device architecture, oscillator options, power‑management modes, memory organization, and peripheral modules such as A/D converters, comparators, timers, CCP/ECCP, MSSP and EUSART. It also lists package options, pin assignments and mechanical dimensions.
Additional sections cover the instruction set summary, development support resources, electrical characteristics, DC/AC characteristic graphs, and contact information for Microchip sales and technical support. This manual is written in Chinese.
| Flash program memory size | 16 KB (2423/4423) or 32 KB (2523/4523) |
|---|---|
| EEPROM endurance | 1,000,000 erase cycles |
| Flash endurance | 100,000 erase cycles |
| Idle mode current | 5.8 µA typical |
| Sleep mode current | 0.1 µA typical |
| A/D converter channels | 10 channels (28‑pin) or 13 channels (40/44‑pin) |
| Maximum I/O current | 25 mA per pin |
| Package options | 28‑pin PDIP/SOIC, 40/44‑pin PDIP/SOIC/TQFP/QFN |
The 28‑pin versions have 10 channels, while the 40/44‑pin versions provide up to 13 channels.
Typical sleep‑mode current is 0.1 µA.
The EEPROM can be erased up to 1,000,000 times.