Bluetooth chips, which can be roughly divided into the following categories:
wireless transceiver chip, radio frequency card chip, radio frequency switch, radio frequency duplexer, radio frequency mixer, radio frequency detector, radio frequency amplifier, radio frequency attenuator, radio frequency coupler, etc.
Among them, the more common domestic brands: Texas Instruments (TI) in the United States, NORDIC/Nordic Semiconductor, Dialog Semiconductor in Germany...
According to the general purpose, it can be simply divided into three categories:
1. Voice, audio SOC, commonly used products for speakers and headphones. For example csr8610, cs8635
2. Simple data transmission SOC, often used to transmit short distance, small data (also known as transparent module, ble module, low power consumption module, etc.), such as csr1010, Texas Instruments (TI) CC2540/2541; it It is generally used to make some low-power personal health equipment with sensors, such as pedometer, blood pressure, heart rate, blood oxygen content (but it cannot be transmitted, and there is no audio decoding)
3. Voice and data composite SOC, which can transmit audio at the same time , voice and data, such as CSR8670, 8675, etc.
CC2540 is a true ultra-low power system chip. It integrates microcontroller , host and application in one component. The Cc2540 combines an excellent RF transmitter with an industry standard enhanced 8051 microcontroller receiver. It includes peripherals to connect analog and digital sensors, built-in programmable flash memory, accurate RF signal strength indication, full-speed USB 2.0 interface and built-in AES-128 encryption engine
CC2540 can build a powerful master node or slave node. It consumes very little power in sleep mode and switches between different operating modes in a short time. It is suitable for systems that require ultra-low power consumption.
The CC2540 is available in two versions: CC2540f128/f256, each version contains 128KB and 256KB of flash memory, packaged in a 40-pin 6mm x 6mm QFN, the integration of the Bluetooth low energy protocol stack makes the cc2540f128/f256 the most flexible and Cost-effective single-mode Bluetooth low energy solution
Nordic's NRF52810 Bluetooth chip 5/ant/2.4GHz SOC uses a powerful CPU (arm cortex-m4) and supports Bluetooth 5 key functions. These features include high broadcast performance with high throughput (2Mbps) and broadcast packet scaling (x8). These devices are high-performance, BOM-less, optimized solutions for a wide range of applications. The NRF52810 and all NRF52 series are flash-based SoCs that support over-the-air firmware upgrades.
