MC908GT16CBE

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The MC908GT16CBE is an 8-bit microcontroller developed by Device Evaluation & Software Tools (DEST) company, with high flexibility and many application fields. It is widely used in embedded systems, combining many functions like controllers, communication and memory, etc. This article will focus on introducing the application fields and working principle of MC908GT16CBE.

Application Field

The MC908GT16CBE 8-bit microcontroller is based on a single chip, and its instruction set is powerful and easy to use. It is suitable for a wide range of practical applications. The core part of the MC908GT16CBE is a 16-bit processor core, specially optimized for use in embedded systems and industrial automation. The peripheral devices of the MC908GT16CBE are also perfectly adapted to this application field, providing high performance with low power consumption.

The excellent speed/performance ratio makes the MC908GT16CBE particularly suitable for motor control applications. The integrated pulse-width modulation module (PWM) and high-speed timer can generate different pulse patterns and accurately capture the movements of the motor by measuring the pulse width.

The MC908GT16CBE also features an 8-channel analog-to-digital converter (ADC) and 4-channel digital-to-analog converter (DAC) which provide various signal resolution, in order to meet the requirements of precise motor control.

In the field of communication, the MC908GT16CBE supports the serial communication interface UART, the short-distance high-speed serial communication interface I2C, and the CAN (Controller Area Network) protocol. This makes it ideal for communication between components in distributed systems and communication with sensors and control systems, etc.

The various communication protocols of the MC908GT16CBE combined with its large amount of internal RAM can make it an ideal platform for networked embedded systems.

Working Principle

MC908GT16CBE adopts a 16-bit architecture, and its processor clocks speed up to 20MHz. It is an 8051-based microcontroller with a fully optimized instruction set for use in embedded systems.

The MC908GT16CBE uses a Harvard architecture, which is based on two memory subsystems: code and data. The code memory stores program instructions and is used to run the program, while the data memory stores data variables and is used to store the results of the program running.

The instruction set of the MC908GT16CBE is designed to minimize the execution time of programs. Instructions are divided into two categories, 8-bit and 16-bit instructions. The 8-bit instructions can be executed in one CPU cycle, which saves time. The 16-bit instructions can be executed in two or three CPU cycles, with the number of cycles determined by the instruction type.

The instruction set of the MC908GT16CBE also includes the segmented stack pointer functions, which can be used to access multiple stacks within a single process. Each segmented stack can contain up to 16-bit data.

Various operations of the MC908GT16CBE can be assisted by its built-in peripherals. Its 16-bit timer and two 16-bit internal real-time counters can generate interrupts when the pre-defined timing is reached.

The MC908GT16CBE is also equipped with a 4-channel digital-to-analog converter (DAC) that can be used to generate a variety of waveforms from stepped data, including sine, sawtooth and triangular waveforms. The DAC can also generate pulse-width modulation (PWM) signals for motor control applications.

The MC908GT16CBE also features an 8-channel analog-to-digital converter (ADC) that can be used to convert analog signals into digital data for use in the processor. The ADC has a resolution of 12-bit, allowing it to measure very small signals.

Moreover, the MC908GT16CBE includes UART, CAN and I2C functionalities, enabling connection to as many as three external devices, while the built-in RAM and ROM memories provide enough memory capacity for most applications.

Conclusion

The MC908GT16CBE 8-bit microcontroller is a powerful and reliable solution for embedded systems. Its highly optimized instruction set, integrated peripherals and communication interfaces make it ideal for motor control, communication and data collection applications. The wide range of applications combined with the low power consumption of the processor make the MC908GT16CBE an ideal choice for most embedded applications.

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