PIC16C67-20/
8-bit microcontrollers with 14KB memory for embedded systems
Manufacturer： microchip
series introduction
# Introduction to the PIC16C67 - 20/ Product Series
## 1. Overview
The PIC16C67 - 20/ product series is a remarkable line of microcontrollers developed by Microchip Technology. These microcontrollers are part of the popular PIC16 family, which is well - known for its high performance, low power consumption, and ease of use. The "20" in the model number typically refers to the clock speed of the device, indicating a 20 MHz clock frequency, which allows for relatively fast processing of instructions and efficient operation in a wide range of applications.
## 2. Key Features
### 2.1 Architecture
- **Harvard Architecture**: The PIC16C67 - 20/ microcontrollers are based on the Harvard architecture. This architecture separates the program memory and data memory, enabling simultaneous access to both instruction and data. As a result, it can achieve high - speed execution of instructions, improving overall system performance.
- **8 - bit CPU**: The 8 - bit central processing unit (CPU) provides a good balance between processing power and cost. It is capable of handling a variety of arithmetic and logical operations, making it suitable for many embedded control applications.
### 2.2 Memory
- **Program Memory**: These microcontrollers are equipped with a certain amount of on - chip program memory. The program memory stores the instructions that the microcontroller executes. The non - volatile nature of this memory (usually Flash memory) allows the program to be retained even when the power is turned off. This feature is crucial for applications where the program needs to be stored permanently.
- **Data Memory**: The data memory, also known as Random - Access Memory (RAM), is used for storing temporary data during the execution of the program. It provides a workspace for variables, intermediate results, and stack operations. The PIC16C67 - 20/ has an appropriate amount of RAM to support the requirements of most applications.
### 2.3 I/O Ports
- **Multiple I/O Pins**: The PIC16C67 - 20/ series offers a sufficient number of input/output (I/O) pins. These pins can be configured as either input or output, allowing the microcontroller to interface with external devices such as sensors, actuators, displays, and switches.
- **I/O Port Configurability**: The I/O ports can be programmed to have different drive strengths and pull - up or pull - down resistors. This flexibility enables the microcontroller to be easily integrated into various electrical circuits.
### 2.4 Peripherals
- **Timers/Counters**: The microcontrollers include timers and counters, which are essential for generating accurate time delays, measuring time intervals, and counting external events. These timers can be used in applications such as motor control, frequency measurement, and pulse - width modulation (PWM).
- **Analog - to - Digital Converter (ADC)**: Some models in the PIC16C67 - 20/ series are equipped with an ADC. The ADC allows the microcontroller to convert analog signals from sensors (such as temperature sensors, light sensors, etc.) into digital values that can be processed by the CPU. This feature is very useful in applications where analog data needs to be monitored and controlled.
- **Serial Communication Interfaces**: They may support serial communication interfaces such as Universal Asynchronous Receiver/Transmitter (UART), Serial Peripheral Interface (SPI), and Inter - Integrated Circuit (I2C). These interfaces enable the microcontroller to communicate with other devices, such as computers, sensors, and actuators, over a serial bus.
### 2.5 Low Power Consumption
The PIC16C67 - 20/ series is designed with low - power operation in mind. It offers
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