Each MCU model consists of a long series of letters and numbers that contain information about the chip manufacturer, chip family, chip's highest clock frequency, chip package, and product level.
The following describes the meaning of each character in the model by taking the AT89S52-24PU single-chip model as an example:
AT - the manufacturer's logo, indicating that the device is a product of ATMEL.
89——A product of the 89 series of ATMEL products (connotation flash memory).
S - indicates that it can be programmed online. Also, C indicates a CMOS product, LS indicates a low voltage of 2.7V-4V, and LV indicates a low voltage of 2.7V-6V, and LP indicates a low power single clock cycle instruction.
52 - indicates that the capacity of the memory is 8K, and 53 is 12K, 54 is 16K, 55 is 20K, 51 is 4K, 2051 is 2K, and the like.
24 - Indicates that the chip's maximum clock frequency is 24 MHz. There are also 33MHZ, 20MHZ, 16MHZ and so on.
P - indicates DIP encapsulation. Further, S denotes a SOIC package, Q denotes a PQFP package, A denotes a TQFP package, J denotes a PLCC package, and W denotes a bare chip.
U - indicates that the chip's product grade is lead-free industrial products with a temperature range of -40 to +85 °C. There is also C for commercial products with a temperature range of 0 to +70 ° C; I for industrial products with a temperature range of -40 to +85 ° C; A for automotive products with a temperature range of -40 to +125 ° C; M for military use The product has a temperature range of -55 to +150 °C.
The model of the chip is only the logo of the chip. Only some simple information can be seen from it. If you want to know the details of the function, parameters, programming, etc. of the chip, you can get the DATASHEET document from the chip manufacturer's official website or IC data network. Pondering.
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