PIC17C44-25/PQ

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The PIC17C44-25/PQ is a Microchip microcontroller which is used in various applications in the fields of embedded systems and control systems. The PIC17C44-25/PQ is based on the PIC16 family of microcontrollers and is equipped with 128 bytes of EEPROM, 256 bytes of program memory, 8 I/O lines, 8 channels of 10-bit A/D converter and internal oscillator. It is suitable for applications where cost, size and power consumption are critical factors.

Application Fields

The PIC17C44-25/PQ microcontroller is used in many applications like industrial control, computers and peripherals, automotive applications, instrumentation, consumer products, and medical electronics. In industrial control, the PIC17C44-25/PQ is used in machine automation, process control, robotic systems and material handling. In computers and peripherals, it is used in keyboards, mice, printers, scanners, and other peripheral devices. In automotive applications, the PIC17C44-25/PQ is used for engine control, powertrain control, navigation, and vehicle informatics. In instrumentation, it is used for measuring and monitoring systems, process sensing applications, and data logging. In consumer products, it is used for consumer products like toys, game consoles, and white goods. Lastly, it is used in medical electronics like heart rate monitors, ECG machines, and other medical instruments.

Working Principle

The PIC17C44-25/PQ is an 8-bit microcontroller, which means that it can work with 8 bits of data at any one time. It operates off of a clock speed of 4MHz and it is connected to an external RAM and ROM using its address and data buses. Its operation is based on an internal RISC processor which is based on Harvard architecture and is capable of addressing 65,536 memory locations with 14-bit-wide instructions. The instruction set of the PIC17C44-25/PQ is tailored for 8-bit applications in both control and embedded systems. It supports various interrupt handling methods, Multi-Level Interrupts (MLI), Multi-Vector Interrupts (MVI) and Non-Maskable Interrupts (NMI).

The PIC17C44-25/PQ uses a complex set of registers for storing data and special purpose registers for controlling the execution of instructions. It also includes on-chip ROM, EEPROM and RAM, which are used for storing data and program code. The PIC17C44-25/PQ also contains a number of general purpose I/O lines which are used for input and output of data.

The PIC17C44-25/PQ microcontroller is designed to operate with minimal power consumption due to its low-power features like sleep mode and standby mode. It also offers a number of features like Watchdog Timer, Power-on Reset (POR), Power-up Timer (PUT), and Brown-out Reset (BOR). These features ensure reliable operation of the microcontroller under varying supply conditions.

Conclusion

The PIC17C44-25/PQ is a versatile microcontroller which can be used in various applications. It is suitable for applications where cost, size and power consumption are critical factors. Its on-chip ROM, EEPROM and RAM offer a good combination for code storage, data storage and program code execution. The various interrupt handling methods, low-power features and automatic reset features offered by the microcontroller make it well suited for embedded systems and control systems applications.

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