This document is a datasheet for Microchip's PIC18F2525/2620/4525/4620 devices, which introduces the characteristics and applications of the devices.
This datasheet provides the specifications, pin‑outs, and functional description of the PIC18F2525, PIC18F2620, PIC18F4525 and PIC18F4620 microcontrollers. The devices feature 10‑bit A/D converters, enhanced flash memory, and a range of peripheral modules such as timers, PWM, UART and SPI.
Key sections cover device overview, oscillator options, power‑management modes, memory organization, peripheral modules and electrical characteristics. The document also includes packaging information, version history and contact details for Microchip support. This manual is written in Chinese.
| Package pins | 28, 40 or 44 pins |
|---|---|
| A/D resolution | 10‑bit |
| Maximum CPU frequency | 40 MHz |
| Idle mode current | ≈ 2.5 µA |
| Sleep mode current | ≈ 100 nA |
| Number of external interrupts | 3 programmable external interrupts |
| PWM outputs (40/44‑pin devices) | Up to 4 PWM outputs |
| Internal oscillator selectable frequencies | 31 kHz – 8 MHz (31 kHz – 32 MHz with PLL) |
The devices can operate up to 40 MHz.
They are offered in 28‑pin, 40‑pin, and 44‑pin packages.
Sleep mode current is about 100 nA.
The 40‑pin version provides up to four PWM outputs.