1, the size and size of the electronic chip are different, SOT-353 is smaller than SOT2SOT-23-5; The PITCH (distance from the center point of the part foot to the center point of the part foot) is different; SOT both stand for small transistor packages. The number after the SOT only indicates that the sequence has no practical significance, and the number generally corresponds to different pin spacing. The SOT25 has three pins, the SOT-353 has four pins and the SOT-23-5 has three pins.
2, the information of the sector 0 block is not supported by reading and writing, it is the information solidified at the factory, in factThe original serial number of the IC card is stored in 0 sector 0 block. To determine the IC card chip model, you can determine the card type by the Request (u8mode) and Select_Card (void) returned when the card request is made.
3, ic chip information query network: http://definition: IC (Integrated Circuit) card was invented in 1970 by the French Roland Moreno, he was the first programmable setting of IC chip is placed in the card, so that the card has more functions. "IC card" and "magnetic card" are named from a technical point of view, and should not be confused with cards named from an application point of view, such as "credit card" and "phone card".
4, the general digit number expressed by the majority of IC chips, such as U101, or you can see the diagram of the circuit diagram of the pin, pin is generally IC class, there is one is to see who is the center of the figure, diode ah resistance capacitor are peripheral circuits, the center is generally the chip.
5, parameters ah, core check can be different?
1, Find the chip and datasheetic chip query right-hand man? Core check is undoubtedly your first choice! Core check this professional software ic chip query , with its comprehensive functions for electronics engineers and industry enthusiasts to provide great convenience. It is not only dedicated to the query of chip information, but also includes the free download of datasheet, so that you can get the most accurate technical data at any time.
2, Huaqiang electronic network track Heshun big data chip originalFactory official website Hello, you can Baidu more than three platforms can query the domestic chip factory and chip information.
3, when looking for detailed information on electronic components, your first place should be ICspec. This professional online platform is undoubtedly a treasure trove of your query parameters, especially for brand and chip specification coverage, which is comprehensive.
2, this can be multiple, such as Taobao to see the appearance, check screen printing, Baidu, alldatasheet see pdf. ic137 can also, if you know the manufacturer, you can search the official website, but there are still many can not find, too old or Taiwan is often produced.
3, screen printing and other functions, which is very suitable for watching live, checking courses, checking programs, and looking at information platesLearn industry knowledge and constantly improve themselves to recharge themselves. If you know the model, you can directly use the check chip function, you can see and download all the datasheet parameter data, you can also see the manufacturer, agent and inventory details, if you do not know the model, you can also use screen printing reverse check function, basically you can find.
4, do you want to ask how to check the pin function of hi3123e chip? You do this to view the model number of the chip, which is printed on the back of the chip. Go to ic37 and other websites to find the chip information. Find the corresponding pin, one point in the first pin position, and then reverse timeNumber of stitches, in order of 2,3. 4 Corresponding pins and data, according to the function of each pin, and then decide if the chip is used.