MC68HC11F1CFN3

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The MC68HC11F1CFN3 is an 8-bit general-purpose microcontroller manufactured by Motorola (now Freescale Semiconductor) and is part of the HC11 Family of microcontrollers. The MC68HC11F1CFN3 is a single-chip microcontroller with many on-chip peripherals, high-speed CPU and memory elements. The MC68HC11F1CFN3 is a low-cost 8-bit microcontroller with a 16-bit address bus and 16-bit data bus optimized for embedded control applications.

Applications
The MC68HC11F1CFN3\'s design is well-suited for embedded control, robotics, instrumentation and motor control applications. Embedded control systems dominate today\'s microcontroller applications, with ubiquitous low-cost microcontrollers used in a variety of electronic gadgets and products. The MC68HC11F1CFN3 is optimally designed for the development of portable and battery powered applications.

Working Principle
The MC68HC11F1CFN3 has a 3-level priority interrupt structure, which allows the microcontroller to respond to multiple interrupt sources in an orderly, well-defined manner. The CPU fetches instructions at a rate of as many as four instructions per machine cycle, allowing very efficient execution of user programs. The MC68HC11F1CFN3 includes an arithmetic logic unit (ALU), which contains hardware registers and logic hardware to directly address memory, eliminating the need for address calculations in software. In addition, it contains a timer, analog-to-digital converter, synchronous serial controller, I/O ports and a 9-channel interrupt controller.

The MC68HC11F1CFN3 has on-chip memory resources, allowing for efficient storage of instructions, user data and executive routines. The chip has 256 bytes of internal RAM and 1536 bytes of EPROM. The chip operates at a maximum clock frequency of 4MHz and an instruction cycle time of 250ns. With its single-chip design, the MC68HC11F1CFN3 is an excellent choice for embedded control applications that require flexibility, performance and low cost.

The MC68HC11F1CFN3 is equipped with an oversight monitor, which can be used to monitor and reset the chip in case of a crash or malfunction. The monitor can reset the system to a known state, test internal memory and I/O functions and capture system state information. The monitor also helps debug programs, which can be tested in the system prior to deployment.

In summary, the MC68HC11F1CFN3 is a single-chip, 8-bit microcontroller designed for low-cost embedded control applications. Its 3-level priority interrupt structure, on-chip memory resources, oversight monitor, high-speed CPU and wide range of peripheral functions make it an excellent choice for embedded control applications that require both high performance and low cost.

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