AT89C2051-12PC

Program Memory Type:	FLASH
Base Part Number:	AT89C2051
Supplier Device Package:	20-PDIP
Package / Case:	20-DIP (0.300", 7.62mm)
Operating Temperature:	0°C ~ 70°C (TA)
Oscillator Type:	Internal
Data Converters:	--
Voltage - Supply (Vcc/Vdd):	4 V ~ 6 V
RAM Size:	128 x 8
EEPROM Size:	--
Series:	89C
Program Memory Size:	2KB (2K x 8)
Number of I/O:	15
Peripherals:	LED
Connectivity:	UART/USART
Speed:	12MHz
Core Size:	8-Bit
Core Processor:	8051
Part Status:	Obsolete
Packaging:	Tube

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Introduction to AT89C2051-12PC

AT89C2051-12PC is a low-cost, low-power, 8-bit microcontroller with the main purpose of being embedded into more complex systems. It has 8K bytes of in-system programmable flash memory, 256 bytes of RAM, a 10-bit analog-to-digital converter (ADC), and up to 14 I/O lines.It is based on the popular 8051 microcontroller architecture and can be programmed using either Assembly language or C. It runs on a crystal frequency of 12MHz which gives an operating instruction rate of 12 million instructions per second (MIPS). There is a built-in serial port allowing communication with external devices as well as an interrupt controller to allow fast handling of interrupts.

Application Field and Working Principle

The AT89C2051-12PC is a versatile industrial grade microcontroller which can be used in a wide variety of applications. It is well-suited for operation in harsh environments such as those found in oil and gas, automotive, and process control industries. It can be used for motor control, data logging, signal processing, embedded system projects and other similar applications. Due to its low-power operation, it is also suitable for battery-operated applications. The controller’s low cost and ease of programming also makes it a common choice for hobbyists, students, and hobbyist projects.The AT89C2051-12PC follows the common 8051 microcontroller architecture which includes an 8-bit processor, an 8-bit ALU, 256 bytes of RAM and 8KB of ROM memory. The processor can handle up to 14 I/O pins which allow it to connect to various external devices such as sensors, keypads, LCD displays, and other outputs. The controller also includes an on-chip analog to digital converter (ADC) which allows it to interface with analog signals such as temperature and light. The on-chip watchdog timer is another feature which can be programmed to periodically reset the controller if it is stuck in an infinite loop. The controller has a built-in serial port which lets it communicate with computers and other devices, such as external memories. Developers may also use this serial port to debug and update the controller’s program.The controller is programmed using either a text-based assembler language or the popular C language. The use of an assembler allows developers to customize the processor’s instructions or use the controller to interact with specific devices. The use of C simplifies the programming process and allows developers to quickly develop applications for the controller.In summary, the AT89C2051-12PC is a low-cost, low-power microcontroller which is suitable for a wide range of industrial applications. Its 8K bytes of in-system programmable flash memory, 256 bytes of RAM, a 10-bit ADC, and up to 14 I/O lines make it a good option for various embedded systems projects. The built-in serial port allows it to communicate with external devices, and its on-chip watchdog timer makes it suitable for battery-operated projects. The controller can be programmed using either Assembly language or C, which makes it an excellent choice for hobbyists and students.

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