PIC18F4620
8-bit PIC microcontrollers with 64KB flash, 40MHz, and multiple pin configurations
Manufacturer： microchip
series introduction
# PIC18F4620 Product Series Introduction
## 1. Overview
The PIC18F4620 is a highly versatile and widely - used microcontroller product series from Microchip Technology. It belongs to the PIC18F family, which is known for its high - performance, low - power consumption, and rich peripheral features. These microcontrollers are designed to meet the diverse needs of embedded system applications, ranging from industrial control and automation to consumer electronics and automotive systems.
## 2. Key Features
### 2.1 CPU and Memory
- **CPU Core**: The PIC18F4620 is based on an enhanced Harvard architecture 8 - bit RISC CPU. This architecture allows for simultaneous access to program and data memory, resulting in high - speed instruction execution. The CPU can operate at clock frequencies up to 40 MHz, providing a high level of processing power for various applications.
- **Program Memory**: It comes with 64 KB of Flash program memory. Flash memory is non - volatile, which means that the program code stored in it is retained even when the power is turned off. This makes it easy to reprogram the microcontroller during development and in the field, enabling firmware updates.
- **Data Memory**: The device has 1536 bytes of RAM (Random Access Memory). RAM is used for storing temporary data during program execution, such as variables, buffers, and intermediate results.
### 2.2 Peripherals
#### 2.2.1 Analog - to - Digital Converter (ADC)
The PIC18F4620 is equipped with a 10 - bit ADC with up to 13 input channels. The ADC can convert analog input signals into digital values, which is essential for applications that need to interface with analog sensors, such as temperature sensors, pressure sensors, and light sensors. The conversion time is relatively fast, allowing for real - time data acquisition.
#### 2.2.2 Timers/Counters
There are multiple timers and counters available in the PIC18F4620. These include 8 - bit and 16 - bit timers, which can be used for a variety of purposes, such as generating time delays, measuring time intervals, and generating PWM (Pulse Width Modulation) signals. PWM signals are commonly used for motor control, LED dimming, and power regulation.
#### 2.2.3 Communication Interfaces
- **USART (Universal Synchronous/Asynchronous Receiver/Transmitter)**: It supports both synchronous and asynchronous serial communication. This allows the microcontroller to communicate with other devices, such as computers, sensors, and actuators, using standard serial protocols like RS - 232, RS - 485, and SPI (Serial Peripheral Interface).
- **SPI**: The SPI interface provides a high - speed, full - duplex serial communication option. It is often used for communicating with external devices such as EEPROMs, ADCs, and DACs (Digital - to - Analog Converters).
- **I²C (Inter - Integrated Circuit)**: The I²C interface is a multi - master, multi - slave serial communication protocol. It is widely used for connecting low - speed peripherals, such as sensors, real - time clocks, and LCD controllers, in a compact and efficient way.
#### 2.2.4 Parallel Master Port (PMP)
The PMP allows the PIC18F4620 to interface with external parallel devices, such as LCD displays, SRAMs (Static Random Access Memories), and Flash memories. This provides a high - speed data transfer option for applications that require large - scale data storage or high - resolution display.
### 2.3 Power Management
The PIC18F4620 offers several
Images for reference
44-QFN Pkg
44-QFNExposed
40-DIP