8051 PINOUTS

-
Let's get started. At this point, I assume that you are already familiar with the concept of microcontrollers (specially the 8051) and have some rough idea about the internal architecture because I will avoid going into it. I will just stick to how-to-use tricks for the 8051. However, for a brief introduction, let me highlight the important aspects of it.

UPDATE: You can also click this link for an updated version of this post.

READ MORE

Comments

Post a Comment

Popular posts from this blog

Using the SG3525 PWM Controller - Explanation and Example: Circuit Diagram / Schematic of Push-Pull Converter

-
Image
PWM is used in all sorts of power control and converter circuits. Some common examples include motor control, DC-DC converters, DC-AC inverters and lamp dimmers. There are numerous PWM controllers available that make the use and application of PWM quite easy. One of the most popular of such controllers is the versatile and ubiquitous SG3525 produced by multiple manufacturers – ST Microelectronics, Fairchild Semiconductors, On Semiconductors, to name a few. SG3525 is used extensively in DC-DC converters, DC-AC inverters, home UPS systems, solar inverters, power supplies, battery chargers and numerous other applications. With proper understanding, you can soon start using SG3525 yourself in such applications or any other application really that demands PWM control. Before going on to the description and application, let’s first take a look at the block diagram and the pin layout. Pins 1 (Inverting Input) and 2 (Non Inverting Input) are the inputs to the on-board error amplifier. If you a
Read more

Using the TLP250 Isolated MOSFET Driver - Explanation and Example Circuits

-
Image
I’ve already shown how to drive an N-channel MOSFET (or even an IGBT) in both high-side and low-side configurations in a multitude of ways. I’ve also explained the principles of driving the MOSFETs in these configurations. The dedicated drivers I’ve shown so far are the TC427 and IR2110. Some people have requested me to write up on MOSFET drive using the very popular TLP250. And I’ll explain that here. The TLP250, like any driver, has an input stage, an output stage and a power supply connection. What’s special about the TLP250 is that the TLP250 is an optically isolated driver, meaning that the input and output are “optically isolated”. The isolation is optical – the input stage is an LED and the receiving output stage is light sensitive (think “photodetector”). Before delving any further, let’s look at the pin configuration and the truth table. Fig. 1 - TLP250 Pin Configuration Fig. 2 - TLP250 Truth Table Fig. 1 clearly shows the input LED side and the receiving photodetector as well
Read more

Best way to fix SVN error "Could not start external diff program"

-
Image
One day you found that the SVN Diff function didn't work, you will see the error "Could not start external diff program" when you try to compare 2 versions of the file (the working item vs the one on repository). This could happen on both Windows and Linux, Mac OS... Don't worry, it's not caused by OS but sometimes due to the update of the diff tool (e.g Beyond Compare 3 is updated to Beyond Compare 4), this makes the link to external diff program in SVN settings not valid anymore. So how to fix this error? Just follow the steps below: 1. Right-click a SVN file (it can be any file with SVN version mark) 2. Select TortoiseSVN -> Settings -> Diff Viewer 3. There are 2 options here: 3.1 You can choose the "TortoiseMerge" to use the SVN default diff tool 3.2 or choose your preferred program by clicking "External" -> Enter path to external diff program 4. Click OK to save all your configuration Now enjoy the convenience of diff fe
Read more