Bluetooth Low Energy
●Bluetooth version 4.0 introduced Bluetooth with low energy functionality. Bluetooth low energy technology allows for short bursts of long-range radio connections, making it ideal for applications that depend on long battery life and don’t need high throughput streaming data. Developers are now able to create sensors that can run on coin-cell batteries for months and even years. Bluetooth low energy technology is built on an entirely new development framework using GATT (Generic Attributes). Silicon Labs supports the latest version of the Bluetooth® Core Specification, Bluetooth™ LE 5.4. This enables customers to claim compliance with the latest Bluetooth spec.
■Bluetooth Low Energy Architecture
●The Bluetooth Low Energy architecture components are as follows:
▲Physical Layer: Controls radio transmission/receiving.
▲Link Layer: Defines packet structure, includes the state machine and radio control, and provides link layer-level encryption.
▲HCI: A Host-to-Controller interface (HCI) standardizes communication between the controller and the host.
▲L2CAP: Logical Link Control and Adaptation Protocol acts as a protocol multiplexer and handles segmentation and reassembly of packets.
▲ATT: Attribute protocol provides means to transmit data between Bluetooth low energy devices.
▲SM: Security Manager provides means for bonding devices, encrypting and decrypting data, and enabling device privacy
▲GAP: Generic Access Profile layer provides means for Bluetooth low energy devices to advertise themselves or other devices, make device discovery, open and manage connections, and broadcast data.
▲GATT: GATT is used to group individual attributes into logical services
▲GATT also provides information about the attributes, that is, how they can be accessed and what security level is needed.
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Bluetooth LE Development Kits 、 Bluetooth development kits 、 Bluetooth Low Energy SDK |
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[ ESL ][ Medical ][ Direction Finding ][ Smart Home ][ Smart Tags ][ Sensors ][ Switches ][ Building Automation ][ HVAC ][ IoT applications ][ Bluetooth LE applications ][ line-powered devices ][ LED bulbs ][ gateways ][ Bluetooth mesh applications ][ Health ][ Portable Products ] |
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Datasheet |
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Please see the document for details |
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QFN40;QFN48;QFN32;TQFN32 |
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English Chinese Chinese and English Japanese |
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2023/5/30 |
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v2.0 |
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468 KB |
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