PIC16F84AT-20/SS

Series:	PIC® 16F
Packaging:	Tape & Reel (TR)
Part Status:	Active
Core Processor:	PIC
Core Size:	8-Bit
Speed:	20MHz
Connectivity:	--
Peripherals:	POR, WDT
Number of I/O:	13
Program Memory Size:	1.75KB (1K x 14)
Program Memory Type:	FLASH
EEPROM Size:	64 x 8
RAM Size:	68 x 8
Voltage - Supply (Vcc/Vdd):	4 V ~ 5.5 V
Data Converters:	--
Oscillator Type:	External
Operating Temperature:	0°C ~ 70°C (TA)
Package / Case:	20-SSOP (0.209", 5.30mm Width)
Supplier Device Package:	20-SSOP
Base Part Number:	PIC16F84A

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<p>PIC16F84AT-20/SS is a member of the widely- used 8-bit PIC 16 microcontroller family developed by Microchip Technology Inc. It is one of the simplest yet most powerful and popular microcontrollers in use today. PIC16F84AT-20/SS is available in two packages, 20- pin PDIP and 28- pin SSOP, and is shipped in PDIP format. Each package has six I/O lines, two 8-bit timers/counters, and a UART for communications. Other features of the microcontroller include a hardware PWM generator, four port pins that can be configured as analog inputs, a low voltage internal clock, and EEPROM data memory.</p><p>The application field of PIC16F84AT-20/SS can be divided into two categories: embedded application in which it can be used to control hybrid systems and single-chip embedded applications. In hybrid systems, PIC16F84AT-20/SS works as part of a system that includes other components such as sensors, analog components, and a power supply. In single-chip embedded applications, PIC16F84AT-20/SS controls the entire system.</p><p>The primary duty of PIC16F84AT-20/SS is to act as a digital signal processor (DSP) for any number of embedded devices that require monitoring and control. Its primary applications include:</p><ul> <li>Control systems, including motor controllers and embedded compute machinery</li> <li>Data acquisition systems, such as those used for environmental monitoring</li> <li>Industrial control systems, such as those used for automated manufacturing</li> <li>Systems used to control and monitor medical equipment</li> <li>Security systems, such as those used for automatic door locks and security cameras</li></ul><p>The working principle of PIC16F84AT-20/SS is based on a so-called von Neumann architecture. This is a standard architecture used in most microcontrollers, which is based around a central processing unit (CPU), memory, and a bidirectional data bus. The CPU issues instructions that are fetched from memory and executed by the microcontroller\'s logic circuitry.</p><p>PIC16F84AT-20/SS comprises a 16-bit Harvard architecture processor with 8K words of programmed memory and 128 bytes of RAM. Harvard architecture is based on separate data and program memories, which allows the processor to perform multiple operations in parallel. The Harvard architecture is preferred over the von Neumann architecture due to its higher speed and reliability.</p><p>Like other microcontrollers in the PIC family, PIC16F84AT-20/SS operates in a Harvard architecture. Instructions and data are fetched from separate memories. Instructions are fetched from the program memory, while data is fetched from the data memory. The data memory can hold up to 8K words of data and optionally, may be used to store program code. The Harvard architecture allows these instructions to execute in parallel with the data memory to increase the speed of operation.</p><p>PIC16F84AT-20/SS is equipped with two 8-bit timers/counters, which can be used to generate accurate timing and counting sequences. The timer/counters provide real-time control capabilities, such as creating a programmable clock, controlling the duration of a pulse, and measuring the length of a pulse. The microcontroller also has four I/O lines that can be configured as analog inputs. These inputs can be used to measure voltage, current, and temperature. The microcontroller also includes a low voltage internal clock, and EEPROM data memory.</p><p>In addition to its primary function of acting as a DSP for embedded devices, PIC16F84AT-20/SS can also be used for a variety of other applications. These include low-power battery-operated applications, where its low voltage internal clock and programmed timers aid in conserving power. It can also be used for industrial control systems, where its 16-bit instruction set assists in controlling a wide range of functions.</p><p>PIC16F84AT-20/SS is a popular and versatile microcontroller with powerful capabilities. It is widely used in many different embedded applications due to its low cost, ease of use, and its ability to execute multiple instructions in parallel. Its programmability and data memory capabilities allow it to be used to control a variety of functions in hybrid systems and single-chip embedded applications.</p>

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