Bluetooth stamp module circuit design details - circuit diagram reading every day (235)
The CC2541 is a true system-on-chip (SoC) for Bluetooth low energy and 2.4 GHz applications. It can build powerful network nodes and keep costs low. The CC2541 combines leading RF transceivers, industry-standard enhanced 8051 microcontrollers, system programmable flash memory, 8kB RAM and many other powerful support functions and peripherals. The CC2541 is extremely adaptable to ultra-low power requirements, with short transition times between operating modes, further reducing power consumption.
Figure 1: CC2541 block diagram
CC2541 Features
Radio frequency
2.4GHz meets low energy specifications and proprietary RF on-chip system
Supports data rates of 250kbps, 500kbps, 1Mbps, 2Mbps
Excellent link budget, long-distance applications without external front-end
Programmable output power up to 0dBm
Excellent receiver sensitivity (-94dBm at 1Mbps), selectability, and blocking performance
Suitable for worldwide compliance with radio frequency adjustment systems: ETSI EN 300 328 and EN 300 440 Category 2 (Europe), FCC CFR47 Part 15 (USA), and ARIB STD-T66 (Japan)
layout
Very few external components
Provide reference design
6mm &TImes; 6mm Square Flat Leadless (QFN)-40 Package
Pin compatible with CC2540 (when USB or I2C is not used)
Low power
Operating mode RX as low as: 17.9mA
Operating mode TX (0 dBm): 18.2 mA
Power Mode 1 (4μs wake-up): 270μs
Power mode 2 (sleep timer on): 1μs
Power Mode 3 (External Interrupt): 0.5μs
Wide supply voltage range (2V - 3.6V)
TPS62730 is compatible with low power in working mode
Figure 2: CC2541 application circuit diagram
The CC2541 is a true on-chip system (SoC) solution for power optimization for low power and proprietary 2.4 GHz applications. It makes it possible to build robust network nodes with low overall bill of materials costs. The CC2541 combines the performance of leading RF transceivers with an industry-standard enhanced 8051 MCU, in-system programmable flash memory, 8kB RAM and many other powerful features and peripherals. The CC2541 is ideal for systems that require ultra-low power consumption. This is specified by a number of different operating modes. Shorter transition times between operating modes further make low energy consumption possible.
Figure 4: CC2541 Bluetooth Stamp Block Reference Design Circuit Diagram
Sample application and configuration file
- General purpose program for GAP hubs and peripherals
- Proximity sensor, accelerometer, simple push button and battery GATT service
- BLE software stack supports more applications
- Multiple configuration options
- Single chip configuration, allowing applications to run on CC2541
- should be the network processor interface, the application for the external microcontroller
- BTool - Windows PC application and evaluation, development and testing
CC2541 main application
• 2.4GHz Bluetooth low energy system
• Proprietary 2.4GHz system
• Human interface devices (keyboard, mouse, remote control)
• Sports and leisure equipment
•Mobile phone accessories
•Consumer Electronics
CC2541 features: 2.4GHz low power and proprietary RF system-on-chip; excellent link budget for long-haul applications without external front-end; programmable output power up to 0 dBm; hardware debug support
Typical application range of CC2541: 2.4GHz Bluetooth low energy system; proprietary 2.4GHz system; human interface equipment (keyboard, mouse, remote control); sports and leisure equipment; mobile phone accessories; consumer electronics
Edit Comment : This article introduces the CC2541 stamp reference design, including the CC2541PS module schematic and layout files. In order to achieve better RF performance, the reference design should be accurately replicated. The CC2541 stamp is suitable for applications requiring proximity detection and temperature sensing. It is the ideal tool for prototyping existing systems.
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