The differences between Bluetooth 5.3 and 5.2 are: low-rate connection, enhanced encryption control, and enhanced periodic broadcasting.
some data transmission can't be transmitted in bluetooth 5.2 because of its low rate, but bluetooth 5.3 solves this problem and enables low-power and low-rate signals to be used. This mainly appears on some medical equipment such as blood glucose meters, and the appearance of 5.3 greatly optimizes medical work. Bluetooth 5.2 needs to broadcast to connected devices on a regular basis, while Bluetooth 5.3 will improve the stability of broadcasting, so as to use the broadcast time to do more things.
for some open signals, such as access control, commercial lighting and other equipment. Bluetooth 5.3 improves their encryption key length control options and security. At the same time, because the administrator control is simpler, the connection can be faster.
Precautions for choosing Bluetooth function
Generally speaking, the technology of the chip reflects the basic level and price level of the chip. At present, the mainstream technology of wireless SOC products and MCU products is still 55nm. The previous generation of chips was basically 11nm process, and the new generation of products was based on 55nm process, with large power consumption level. On the other hand, with higher technology, the overall area of the chip will be smaller and the cost of the chip will be more advantageous.
at present, Flash is generally the Die of SiPFlash. here, it is necessary to confirm whether SiP Flash is mature, the type of SiP Flash interface and the speed supported by Flash. If it's a non-SiP Flash, it's best to know whose IP Flash is and which chips have been used, so as not to have the helpless situation that the program runs around and the content of Flash changes or Flash can't run stably.