2020年9月9日 · 1B2 is the designation R5F211A2SP is a16-BIT SINGLE-CHIP MICROCOMPUTER R8C FAMILY / R8C/1x SERIES. The designations you can find are 1A4, C1A4, 1B3, C1B4. 1A, 1B means the group and 1,2,3,4 the amount of memory.Eg 1=4kb, 2=8kb, 3=12kb, 4=16kb.Pictures can be found on the internet and here is the datasheet.

2016年3月30日 · For example, inside a vintage Soyuz clock I found an IC labeled "134 ЛБ2A". The series number, 134, indicates the chip is a low-power TTL chip (similar to the 74Lxx series). The "Л" (L) indicates a logic chip (Логические), with "ЛБ" indicating NAND/NOR logic gates. Finally, "2" indicates a specific chip in the ЛБ category.

This is where you start counting from 1 going around the chip. A dot can be in the pin 1 corner. A notch can be at the pin 1 end. Actually thinking back to the tube convention, the notch is really showing you where the start/stop gap in numbering is when going around the chip. This is totally consistent with tube pin numbering.

2021年4月30日 · Usually, chip development is done in tools like Cadence Virtuoso. You can search online for pictures. You can search online for pictures. Virtuoso has to be fed with the design kit of the process you want to use, which contains all of the models of the components available in the specific semiconductor technology.

2020年4月5日 · So I believe what you'd need to do is find another board with a chip that has the same number and lift it, because it seems you can't order one from anywhere. The generic device for BT 5.0 version such as in the fosiaudio amplifiers (eg ZK-502T line) may have very similar specs to this one, other than improved bitrate and XMT power.

2010年10月14日 · Here are two photos of the same chip. I cleaned it with alcohol and a Q-tip and dried it prior to shooting the pictures. Other than that, the only thing that is different is the position of the microscope. I did not even change the focus. The first picture. is from directly over the chip. The second picture . is at about a 45-degree angle.

The Transistor Tester was made for identifying parts, uses an Arduino chip (Atmel328P), and is an open source project, so you can get the code and fix it or enhance it yourself. Both versions have pads for testing surface mount components (and Dave of EEVBlog does test a few SMT devices in his video).

2011年5月4日 · The main problem with IC operation at high temperatures is the greatly increased leakage current of individual transistors. The leakage current can increase to such an extent that the switching voltage levels of the devices is affected, so that signals can't propagate properly within the chip, and it stops functioning.

2011年1月14日 · X-ray won't tell you much. Dimensions of the chip and where the bonds are attached. Decap is probably necessary. You should be able to get the manufacturer from text on the die, which will be a big clue. If you are really lucky, the manufacturer will put something on the die to help you ID the part number.

2018年4月9日 · I remember this logo. Don't ask me where I know it from. A bit digging showed that we had a similar request for this chip already: Help for identifying pinout of unknown mp3 chip. Manufacturer is probably called "Jerry" or "Jay Management". Probably there simply is no english name for the manufacturer.