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Bluetooth vs Bluetooth LE: Difference Between Classic and BLE

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After 2013, Bluetooth Low Energy has been vigorously promoted, Bluetooth Low Energy modules have been widely used, and various Bluetooth smart products such as Bluetooth smart lights, Bluetooth smart door locks, Bluetooth bracelets, etc. have poured in. The development and growth of Bluetooth modules and mobile phone Bluetooth technology promote each other and complement each other. What is the difference between a Low Energy (BLE) Bluetooth and a classic Bluetooth?

Difference Between Classic Bluetooth and Low Energy (BLE) Bluetooth


Classic Bluetooth (BT)

It generally refers to the Bluetooth protocol that supports the Bluetooth protocol below 4.0, and is generally used for the transmission of a relatively large amount of data, such as voice, music and other high-volume data transmission. Classic Bluetooth can be subdivided into: traditional Bluetooth and high-speed Bluetooth. Traditional Bluetooth was launched in 2004, mainly supporting the Bluetooth 2.1 protocol, and was widely supported during the outbreak of smartphones. Introduced in 2009, the high-speed Bluetooth chip increases the speed to about 24Mbps, eight times that of the traditional Bluetooth chip, and can be easily used for data transmission between VCRs to HDTVs, PCs to PMPs, and UMPCs to printers.

Bluetooth Low Energy (BLE)

It refers to the Bluetooth protocol that supports Bluetooth protocol 4.0 or higher. The biggest feature is the reduction of cost and power consumption. It is used in products with high real-time requirements, such as: smart home (Bluetooth locks, Bluetooth lights), sensor Data transmission of devices (blood pressure monitor, temperature sensor), consumer electronics (electronic cigarette, remote control toys), etc.

3 Advantages of Low Energy Bluetooth Chips

Why do so many smart products use Bluetooth technology? What are the advantages of Bluetooth Low Energy?

  1. BLE Bluetooth chip has lower power consumption and long power supply time

Because Bluetooth Low Energy technology has developed to the point where the average daily power consumption can be less than 10mA, Bluetooth Low Energy is applied to smart products, and it can work for one or two years or even longer with a small battery. The power consumption of other wireless technologies and classic Bluetooth, this is the communication technology that smart products are willing and interested in.

  1. Bluetooth Low Energy chip with fast connection speed

Bluetooth Low Energy technology uses a very fast connection method, and the connection time interval is variable. This interval can be set from a few milliseconds to a few seconds according to specific applications. It can be connected to a smartphone almost instantly, which greatly shortens the waiting time.

  1. Bluetooth Low Energy chips use unlicensed frequency bands

Because Bluetooth Low Energy technology is a free electromagnetic frequency band, the 2.4GHz frequency band in which low-power bluetooth operates is a completely free electromagnetic frequency band. Others such as WiFi, induction cookers, etc. use the 2.4GHz frequency band, which is because this frequency band does not have to pay special licensing fees to the radio management department.

  1. The Bluetooth Low Energy chips are easy to operate and more suitable for smart products

A smart product with a built-in Bluetooth Low Energy module can be directly connected to a mobile phone. Compared with other communication methods on the market, such as 433MHz and ZigBee, although these communication technologies are also mature and the transmission distance is good, they are not reflected in smart phones, and the Bluetooth function is basically one of the standard features of smart phones. There is no need for other terminal equipment to match and operate. Therefore, the reason why smart products choose Bluetooth technology is the recognition of the terminal market.

The BX2400 series chip integrates 32-bit ARM Cortex-M0+ core and Bluetooth 5.0 RF transceiver and protocol stack, and has rich peripheral resources such as UART, IIC, SPI, ADC, DMA, and PWM. The BX2400 series chips are SoCs without programs from the factory. The functions of Bluetooth-based broadcasting, scanning, connection, and transparent transmission can only be used after secondary development by users.

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