Difference between Bluetooth BLE and Classic Bluetooth

Difference between Bluetooth BT and BLE

Classic Bluetooth Module (BT):

Generally refers to the module that supports the Bluetooth protocol below 4.0, and is generally used for transmission of relatively large amounts of data.

The classic Bluetooth module can be further subdivided into: traditional Bluetooth module and high-speed Bluetooth module. Traditional Bluetooth modules were introduced in 2004, mainly representing modules that support the Bluetooth 2.1 protocol, and were widely supported during the period of smartphone explosion.

High-speed Bluetooth modules were introduced in 2009, increasing the rate to about 24Mbps, eight times that of legacy Bluetooth modules.

Bluetooth Low Energy (BLE) Module:

Bluetooth Low Energy technology uses a variable connection interval, which can be set from a few milliseconds to several seconds depending on the specific application. In addition, because BLE technology uses a very fast connection method, it can be left in a "non-connected" state (conserving energy), where the two ends of the link are only aware of each other, and the link can be turned on only when necessary, and then turned off in the shortest possible time.

Bluetooth BT/BLE is just one way to categorize Bluetooth modules, in fact there are many more classifications of Bluetooth modules. For example:

According to the use of the purpose of the points,

Data Bluetooth module

Voice Bluetooth module

Serial Bluetooth module

Bluetooth module in the car;

According to the design of the chip to be divided,

flash version

ROM version.

The former is usually a BGA package (begging gate array package) with external flash, and the latter is usually a LCC package (surface mount type package) with external EEPROM.

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