PIC microcontrollers are fabricated by Microchip Technology. PIC16C84 and PIC16F84 are the two microcontrollers in the PIC16X84 family of microcontrollers. PIC16F84 is the enhanced version of PIC16C84.
PIC16X84 family of microcontrollers possess the following key … Read More
The ADD instruction tells the microcontroller’s CPU to add the source byte to register A and put the result in register A. Recall, A is the accumulator register typically used for all arithmetic and logic instructions.
The ADD instruction is … Read More
The 68HC11 (also abbreviated as 6811 or HC11) is an 8-bit microcontroller that was introduced by Motorola in the year 1984. The production of these chips was later done by Freescale semiconductor. Currently they are fabricated by NXP semiconductors which … Read More
In envisaging a new microcontroller design, it is prudent to follow a design procedure that will take you from the initial problem statement to a programmed microcontroller that can be embedded in application hardware. In this article, we look at … Read More
All these three types of microcontrollers are 8-bit manufactured by NXP semiconductors with embedded Intel processors.
Some of the key features of these microcontrollers are listed in the following sections but it is important to note that, you can get … Read More
The figure below illustrates the key elements of a temperature measurement system employing a MC68HC11 microcontroller.
The temperature sensor provides a voltage proportional to the temperature; an example of such a sensor … Read More
In this article, we discuss how to interface the PIC microcontroller to various types of input and output devices. A key point to recall when dealing with PIC is that, each pin in the I/O ports may be configured in … Read More
The MOV instruction tells the CPU to move (in actual fact COPY) the source operand to the destination operand.
MOV destination, source ; copy source to destinationProgramming in assembly language requires that at least you understand the architecture of … Read More
LCD crystal displays allow a better user interface compared with LED displays as it is much easier to display text messages in LCD displays. They also consume much less power than LED displays. Nonetheless, LED displays have better intensity than … Read More
In this article, we briefly describe how to interface LEDs and electromechanical relays to microcontrollers. Note, a detailed description on how this is done can be found in the official documentation of the microcontroller you are working with. Here, we … Read More