AT89LP4052-20SU
8-bit microcontrollers with 4KB flash memory for versatile applications
Manufacturer： ['microchip', 'atmel']
series introduction
# Introduction to the AT89LP4052 - 20SU Product Series
## 1. Overview
The AT89LP4052 - 20SU is a highly versatile and reliable microcontroller product series offered by Atmel (now part of Microchip Technology). This series is designed to meet a wide range of embedded system requirements, providing a balance between performance, power consumption, and cost - effectiveness. With its rich set of features and capabilities, it has become a popular choice among engineers and developers in various industries.
## 2. Key Features
### 2.1 Microcontroller Core
- **8051 Architecture**: The AT89LP4052 - 20SU is based on the well - known 8051 microcontroller architecture. This architecture is widely recognized for its simplicity, ease of programming, and extensive software support. It allows developers to leverage a vast library of existing code, tools, and development environments, reducing development time and cost.
- **Low - Power Design**: One of the standout features of this series is its low - power operation. It is designed to consume minimal power, making it suitable for battery - powered applications such as portable devices, wireless sensors, and remote monitoring systems. The low - power modes available in the AT89LP4052 - 20SU help to extend the battery life of these applications significantly.
### 2.2 Memory
- **Program Memory**: It comes with 4KB of in - system programmable Flash memory. This Flash memory allows for easy reprogramming of the microcontroller, enabling developers to make changes to the firmware during the development process or in the field. The in - system programming feature also simplifies the manufacturing process, as the microcontroller can be programmed after it has been assembled on the printed circuit board (PCB).
- **Data Memory**: The AT89LP4052 - 20SU has 256 bytes of on - chip data memory (RAM). This memory is used for storing variables, intermediate results, and other data during the execution of the program. The sufficient amount of data memory ensures smooth operation of the microcontroller in various applications.
### 2.3 I/O Ports
- **Multiple I/O Pins**: The microcontroller is equipped with a total of 32 programmable I/O pins. These pins can be configured as input or output ports, allowing for easy interfacing with external devices such as sensors, actuators, displays, and communication modules. The I/O pins are also capable of driving external loads directly, reducing the need for additional driver circuits in many cases.
- **Flexible Configuration**: The I/O ports can be configured in different modes, such as push - pull, open - drain, and high - impedance modes. This flexibility enables developers to optimize the performance of the microcontroller according to the specific requirements of the application.
### 2.4 Peripherals
- **Timer/Counters**: It includes two 16 - bit timer/counters. These timer/counters can be used for a variety of purposes, such as generating time delays, measuring time intervals, and generating pulse - width modulation (PWM) signals. The PWM signals can be used to control the speed of motors, the brightness of LEDs, and other analog - like functions.
- **Serial Communication Interfaces**: The AT89LP4052 - 20SU features a full - duplex serial communication interface (UART). This interface allows the microcontroller to communicate with other devices, such as computers, sensors, and other microcontrollers, using the serial communication protocol. It supports various baud rates, making it compatible with a wide range of serial devices.
### 2.5 Operating Frequency
- **20 MHz Clock Speed**: The "20SU" in the product name indicates
Images for reference
20-SOIC 0.295
20-SOIC 0.295
20-SOIC