What`S A Microcontroller Pdf

Induction Heater with CKM0. Microcontroller. UPDATE 1. More pics of device and full disassembly uploaded by Ad. ThanksAtmel is a leading manufacturer of microcontrollers and touch technology semiconductors for mobile, automotive, industrial, smart energy, lighting, consumer and home. OPTIONS 5. 8. 3 Customization Facilities The following are useful for supporting a number of features in a variety of compilers. With some exceptions, they are used. Looking for books on Microcontroller Check our section of free ebooks and guides on Microcontroller now This page contains list of freely available Ebooks, Online. A user nicknamed Ad has taken some pictures of the inside of a new induction cooktop by Better China, see their original comments at this article. This device is interesting because it appears to be a streamlined version of the Burton cooktop we looked at, with many fewer devices and one big, 2. With the posted pics and a little detective work weve found out a bit more about this device and will now share it with you, fine readers. Check out the full story in the very beautiful pics Ad took. Great work, and awesome camera by the wayFirst, we will start out by showing the new pics Ad uploaded, then well continue on with the rest of the article from yesterday. First, the image from the box. Fig 1 Original Dutch Ad for the IH Cooker. Next,  the device with the top removed. Very nice, compact design. We see the control board with 7 segment LED display for temp and power readout up in front. The obligatory fan mounted down in the base of the unit, and a lovely induction coil. Looks like about the same gauge Litz wire as the Burton unit but with a much nicer coil former. Were hoping its not all glued together in a big shellac clump like the Burton, so the coil can be disassembled and re wound into a cylinder  Aside from the melted black plastic formers, it APPEARS theres nothing too troublesome holding the coil in place, which is a very encouraging sign. Fig 2 The device with cover removed. Next comes the power stage board. Again, very clean and simplified design. Theres the input filtercurrent feeding inductor up there in the upper left, the nice hefty blue caps for the resonant tank and feed tank, and MANY fewer components than the Burton. Compact, and probably much cheaper to produce. Fig 3 The power stage board. Ahh, the big boy himself. The venerable 2. N1. IGBT.   2. 5A and 1. V of pure power switching fury. A little slow for chopper based converters, but for this type of high current soft switching application this device cannot be beat. Its interesting that this cooker gets away with only a single IGBT not sure if its lower powered than the Burton, or whether only a single IGBT is needed to get enough power over there in 2. V land.   Lucky bastardsFig 4 The main power switch, a Fairchild FGA2. N1. 20 IGBTHeres the solder side of the power board. Again, cleaner and more compact. And nicely diagrammed in white silkscreen to make circuit tracing easier  Excellent  Ad has been kind enough to label a few of the power stage components for us in red, along with their values. Fig 5 Solder side of the power stage board. So thats it for the extended tour of the insides of the new device. Well continue on with the remainder of the original post from yesterday as we puzzle out the function of the power stage. But rest assured, we are now opening e. Software Terminator 2 Pinball Pc S. Bay and looking for this little gem to see for ourselves what treasures it holds. Idm Optimizer Full. Blog Entry Build Your Own Microcontroller Based PID Control Line Follower Robot LFR Second Part August 30, 2009 by rwb, under Robotics. One of the interesting. What`S A Microcontroller Pdf' title='What`S A Microcontroller Pdf' />Fig 1 Snapshot of the more advanced IH cooker from Ad Power Control details. Lets take a look and see what we can recognize. We can see the heatsink, presumably cooling the bridge rectifier and IGBTs, as well as the big fat resonant caps light blue. The same old 8 pin flyback IC appears near the little yellow transformer, probably making the same old 1. V or 1. 2V main rail for running the gate driver of the IGBT. And is that the good old 7. Must be the same old 5. V rail for the control circuitry. But no LM3. And no ratsnest of discrete components to do the voltage sensing, current sensing, PWM, fault protection, etc  CoolIt appears to have all been replaced by a 2. IC with the 2. 00. D BUP label.   This code is probably the model number 2. W  or 2. 30. V and revision code for the cooker. Now  Whats beneath this little ladys skirt  Ad obliges to give us a peek in this next pic. Fig 2 Closeup of the Mystery IC Topmark. CKM0. 05. ND2. 0J. Huh  2. J is probably the package code, ND may be a product option. So CKM0. Not much. Guessing its a microcontroller gets a few sporadic hits on those junk pages listing every IC in the dictionary for sale. So some confirmation, but not much info. Some references to EMC corporation, and other chips such as CKM0. IS a microcontroller and is specifically designed for the induction cooker application. Their verbage is usually something about MCU for IH Cooker, so lets dig even deeper. Assuming that this device is produced in Asia for the Asia market, Google USA is probably the wrong search engine to use. Firing up a Baidu search for CKM0. IH Cooker hits datasheet paydirt as the first hit   Special thanks to G E Chip Technology for scanning and giving the interwebs a pdf copy of the datasheet Since youd probably like to get yourself a look at this datasheet, we give you. The original link to the CKM0. Datasheet. Or if that goes down, you can always use. Our local backup. Great stuff  So its a simple, 4 bit micro specifically designed for the induction heater application. It actually looks like its specifically designed for Better Chinas cooker topology, with the external components on the block diagram almost identical to what we saw in the circuit analysis of their discrete device version. Lets take a look. Fig 3 Block Diagram of CKM0. Induction Heater Microcontroller. If youre interested in this type of application, you really need to sit down and read through this entire datasheet. Theyve made clever use of simple digital logic and a handful of comparators to come up with a robust and feature rich device for IH cooker control. Theres the MC comparator with adjustable internal delay to detect the resonant ringdown of the switching node that is used to start a new cycle, a neato overvoltage detection on the switching node for startup and dead IGBT prevention, the IINICOM op amp for tuning the switch current via on time to be proportional with the rectified mains for nice power factor, and a host of various protection mechanisms. All this good stuff is accessable to and in some cases interrupting the MCU for smooth interaction and flexible implementation. Now is it better than an LM3. Its probably more reliable, and definitely more manufacturable than the ratsnest of discretes they had in the old version. But you guys know how it goes these days cost. The LM3. MCU versus the cost of all those discretes, and the cost of customer returns for blown IGBTs due to the somewhat less sophisticated control using discrete devices. So is it hackable  We really dont know yet. If the system is well designed, it might be flexible enough to work with a different coil the opportunity is certainly there with this IC. But the CKM0. OTP one time programmable so if they put in frequency limits or other checks that would be disturbed by us mucking around with it, maybe its not too hackable. No idea if theres any way to read the code back out, and if so what the hell kind of opcodes this Tontek micro would use. Not that this would be too hard to work out, of course.