PIC18F45K22-E/PT
8-bit PIC microcontrollers with flash memory in 44-pin TQFP packages
Manufacturer： microchip
series introduction
# PIC18F45K22 - E/PT Product Series Introduction
## 1. Overview
The PIC18F45K22 - E/PT is a highly versatile and powerful microcontroller product series offered by Microchip Technology. These microcontrollers are designed to meet a wide range of embedded system applications, providing a balance between performance, functionality, and cost - effectiveness. With their rich set of features and capabilities, they are suitable for use in various industries such as automotive, industrial control, consumer electronics, and more.
## 2. Key Features
### 2.1 CPU and Memory
- **High - Performance CPU**: The PIC18F45K22 - E/PT is based on an enhanced mid - range 8 - bit RISC CPU core. It offers a high - speed instruction execution rate, with a maximum operating frequency of up to 64 MHz. This allows for rapid data processing and efficient execution of complex algorithms.
- **Program Memory**: It comes with 32 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 enables easy reprogramming during development and in - field updates.
- **Data Memory**: The microcontroller has 1536 bytes of RAM (Random Access Memory). RAM is used for temporary storage of data during program execution, such as variables, buffers, and intermediate results.
### 2.2 Peripherals
#### 2.2.1 Communication Interfaces
- **Universal Asynchronous Receiver/Transmitter (UART)**: The UART interface allows for serial communication with other devices, such as computers, sensors, or actuators. It supports a wide range of baud rates, making it compatible with different communication standards.
- **Serial Peripheral Interface (SPI)**: SPI is a high - speed synchronous serial communication interface. It enables fast data transfer between the microcontroller and external devices like memory chips, sensors, or displays.
- **Inter - Integrated Circuit (I2C)**: The I2C interface is a multi - master, multi - slave serial communication protocol. It is commonly used for connecting low - speed devices such as EEPROMs, sensors, and real - time clocks.
#### 2.2.2 Analog - to - Digital Converter (ADC)
The PIC18F45K22 - E/PT is equipped with a 10 - bit ADC. This ADC can convert analog input signals from sensors (such as temperature sensors, light sensors, or pressure sensors) into digital values that can be processed by the microcontroller. It has up to 13 input channels, allowing for the simultaneous measurement of multiple analog signals.
#### 2.2.3 Timers and Counters
- **Multiple Timers**: The microcontroller includes several timers, such as Timer0, Timer1, Timer2, Timer3, and Timer4/5. These timers can be used for a variety of purposes, including generating time delays, measuring time intervals, and generating PWM (Pulse Width Modulation) signals.
- **PWM Generation**: PWM signals are widely used for controlling the speed of motors, adjusting the brightness of LEDs, and other applications that require variable power control. The PIC18F45K22 - E/PT can generate up to 4 independent PWM outputs.
### 2.3 Power Management
- **Low - Power Modes**: The PIC18F45K22 - E/PT offers multiple low - power modes, such as Sleep mode and Idle mode. In Sleep mode, most of the internal circuits are powered down, reducing the power consumption to a minimum. This is particularly useful for battery - powered applications where power efficiency is crucial.
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Images for reference
44-TQFP
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