2.4GHz single-chip Bluetooth technology composed of CC2540F256

This article introduces the main features, block diagram, application circuit diagram and external component list of CC2540F128/256, as well as the CC2540EM reference design circuit diagram and bill of materials (BOM).
TI's CC2540F128/256 is a 2.4GHz single-chip low-power Bluetooth system-level chip that integrates an RF transceiver with an industrial standard 8051 MCU with enhanced performance, in-system programmable flash memory, 8KB RAM, and other features and peripherals. It is mainly used in consumer electronics, medical equipment, mobile phone accessories, sports and leisure equipment, and human-machine interface devices.

CC2540F128/256 main features:


Figure 1. CC2540F128/256 block diagram

Figure 2. CC2540 application circuit diagram

Application circuit diagram external components list (excluding power decoupling power supply):

CC2540EM参考设计

The CC2540EM reference design contains schematics and layout files for the CC2540EM module. The reference design demonstrates good techniques for CC2540 decoupling and RF layout. For optimum RF performance, the reference design should be copied accurately. This is a 4-layer reference design with an SMA antenna connector for RF output matched to 50 ohm.


图3。CC2540EM参考设计电路图