AT80C31X2-SLRUL

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The AT80C31X2-SLRUL is a microcontroller and a member of the MCS-51 family developed by Intel and produced by Atmel. It is a low-power, 8-bit CMOS microcontroller that can be used for wide-ranging embedded control applications. The AT80C31X2-SLRUL provides set of peripheral functions that are built into the single chip and a vast range of features such as eight bit CPU, advanced addressing modes, additional instructions, non-volatile memory such as EEPROM, timer/counters and interrupt structure.

Application Field

The AT80C31X2-SLRUL is suitable for a variety of applications such as pulse width modulation, analog and digital signal converters, data loggers, serial communication, automotive, industrial and consumer products, embedded control and instrumentation. The AT80C31X2-SLRUL can be used in the system designs of low-end automotive applications such as in baseboard controllers, electronic transmission controllers and ABS (Anti-lock brake system) and CAN (Control Area Network) systems. It also used in ship navigation systems, game controllers and robotic systems as well as control of factory automation in control equipment such as security systems, home appliance system and factory automation.

Working Principle

The AT80C31X2-SLRUL features an eight bit CPU with up to 256 bytes of OTP (One Time Programmable) ROM that contains the user program. The AT80C31X2-SLRUL also features a set of internal peripherals such as Timer/Counters, Serial Communication Interface (SCI) for UART or I2C operation, an internal RAM of 256 bytes, an Allocate RAM for data storage, and a Battery Backed RAM for storing system parameters. The device is designed to be easily programmed using an in-circuit programmer or emulator. The AT80C31X2-SLRUL is also compatible with 8051 assembler programs, which make the device relatively easy to program.

The AT80C31X2-SLRUL is configured with an 8 bit ALU (Arithmetic Logic Unit) which performs all the mathematical and logical operations. The ALU can perform arithmetic or logic operations on 8 bit executable instructions such as ADD, SUB, MUL, DIV and LOGIC operations such as AND, OR, XOR. The instructions are executed from the program directed by the program counter which keeps track of the current address of the microcontroller. The system clock provides timing information to the microcontroller which is then used to advance the program counter each time an instruction is executed.

The AT80C31X2-SLRUL includes a set of external pins which can be used to communicate with other devices in the system. This includes four external interrupt pins, two bidirectional data bus pins, a clock pin, a reset pin and two configuration pins. These pins can be used to connect with other components such as EEPROMs, RAMs, Keypads, displays, ADCs and DACs to interface with sensors and other external devices.

The AT80C31X2-SLRUL is an highly versatile microcontroller and is designed for low-cost, low-power applications. It is suitable for wide ranging embedded control applications due its wide range of peripherals, sets of instructions and efficient structure. The AT80C31X2-SLRUL can be programmed using existing 8051 assembler programs and can be designed at low cost for embedded control systems such as automotive, industrial and consumer products.

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