PIC16C55A-20E/SP

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The PIC16C55A-20E/SP is an 8-bit CMOS microcontroller which is embedded with 20MHz clock rate and an elective power-saving sleep mode. It is a member of the PIC microcontroller family of devices by Microchip Technology, Inc.

Features

The PIC16C55A-20E/SP features a wide variety of features to maximize the efficiency of hardware design, including an 8-Bit Processor, an 8-Level Stack, a Low-Power Sleep Mode and Microchip\'s Peripheral Interface Controller (PIC) Technology that enables efficient control of peripheral devices.

The PIC16C55A-20E/SP includes a power-saving sleep mode, which allows for optimal power consumption by using only an extremely low amount of current while in sleep mode, resulting in improved battery life. It also has an onboard low-power oscillator, which reduces system power consumption while providing accurate timing.

The chip has 8 MHz internal RC oscillator, which can be adjusted to 20 MHz, and internal memory up to 512x12-bits of data. It has 8-channel input/output ports (I/O ports), and 2 programmable Timers/Compare units, which can be used for various applications such as pulse-width modulation, interrupt events and analog to digital conversion.

Application Field

The PIC16C55A-20E/SP is suitable for a wide range of applications including communication, consumer, automotive and industrial automation, as well as healthcare, lighting, and monitoring and control. With its wide range of features and extensive user-friendly programming capabilities, the PIC16C55A-20E/SP offers the flexibility and cost-effectiveness that designers need.

Due to its high level of integration and power-saving features, it is particularly useful in small systems where tight circuit integration is needed to minimize board area.

The PIC16C55A-20E/SP can also be used in remote equipment, where communications designs require support for multiple low-speed peripherals, such as telemetry, wired or wireless communications networks, and low-speed serial communication.

Working Principle

The root of the 8-bit microcontroller begins with memory and CPU, with input/output (I/O) ports linked up to the Interrupt Enable and Indirect Address registers. This type of IC is set up in what is referred to as a "Harvard architecture". This setup is seen as an advantage due to the separate instruction and data paths and being able to access both code and data in any order.

The core of the microcontroller is an 8-bit architecture processor with a single accumulator. The accumulator is used for manipulating data and the carry flag is set when computations are carried out. Each microcontroller is made with either one or two operating modes - in the case of the PIC16C55A-20E/SP, only one mode is used, although the chip can access two memories with one another.

The execution of instructions can be made step-by-step, making it an ideal way to debug the processor and programming. Direct addressing is used to store 8-bit bytes in RAM, compared to other chips that use 8-bit words.

The microcontroller contains dedicated on-chip program memory for program storage and for data storage. The PIC16C55A-20E/SP, for instance, requires ROM between 0-256K and 214 RAM locations. The microcontroller also contains 14 interrupt sources and can support additional external interrupts.

The pins on this microcontroller have very limited functions and are used primarily for communication and power supply. The pins are also shared, meaning that in order for the chip to function correctly, the pins must be configured correctly for each application.

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