PIC17C42AT-16/L

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PIC17C42AT-16/L is an embedded microcontroller based on MOS Technology 8-bit enhanced RISC architecture. It is designed to give user the power and flexibility to build modern embedded system with ease. It is an ideal choice for applications relate to automotive and industrial automated system, medical, security, instrumentation and automation.

Features

PIC17C42AT-16/L provides many features advantageous to numerous applications. The design is based on MOS technology 8-bit enhanced RISC architecture to deliver extended application such as high performance and low power consumption. It also provides user with numerous peripheral and control features, debounce circuit and self-programmable memory.

The device features 8K program memory and 512 bytes of RAM. It includes 10 source registers and 256 bytes of EEPROM for nonvolatile data storage as well as 5 multimedia/interrupt/power management channels. It also comes with an integrated 1-wire interface module (1-WIM) for connecting external serial devices such as RF transceivers. It supports a wide 2.7V to 5.5V operating voltage range with creative programming techniques that minimize board space, microprocessor pin count and system power consumption.

Applications

The main applications of the PIC17C42AT-16/L are automotive and industrial automated systems, medical, security, instrumentation and automation. It is highly suitable for use in industrial applications since it is designed to securely operate in harsh environments. It is also widely used in medical applications to monitor vital signs and record medical data. In addition, the device is suitable for use in consumer electronics, with its multimedia capabilities.

It is ideal for intelligent remote control and home automation projects, due to the integrated 1-WIM and low power consumption features. It is also suitable for consumer goods and lighting control applications. Other applications that this device is used for include voice control, interactive toys, and energy monitoring devices.

Working Principle

The working principle of the PIC17C42AT-16/L can be explained in five main steps. First, the device is normally initiated by resetting and then executing the Reset Vector present in memory. During the initialization phase, all the control registers are set and a valid memory address is allocated to the program counter for the start of execution. After the initialization phase, then the device begins to execute instructions starting from the reset vector.

As instructions are executed, the program counter is incremented accordingly. During the operand fetching phase, the program counter points to an instruction. The instruction is then decoded and the operands are fetched from memory. These operands are the memory address, I/O port address, or data that needs to be used for the instruction. After the operands are received, the instruction decoding can begin.

The CPU then decodes the instruction and sends, as appropriate, status and control signals to the ALU and other devices such as the timer, serial port, I/O ports, memory, and Interrupts. After the instruction is executed, the result is sent to the register or memory. To conclude one instruction cycle, the program counter is incremented to point to the next instruction in memory. The above five steps are repeated continuously until the program is finished.

Conclusion

The PIC17C42AT-16/L is an excellent microcontroller device which integrates several features that make it suitable for various applications. It is specifically designed for applications which require efficient performance, reliability and low power consumption. The device is a perfect choice for applications such as automotive and industrial automated systems, medical, security, instrumentation and automation.

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