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您现在的位置: 61IC电子在线 >> 解决方案 >> 无线通信 >> 蓝牙技术 >> 正文
  [组图]TI CC2541蓝牙邮票块参考设计           ★★★ 【字体:
TI CC2541蓝牙邮票块参考设计
作者:61ic    文章来源:Internet    点击数:    更新时间:2014-6-5    
关键字:通信技术,无线通信,蓝牙

TI公司的CC2541是用于蓝牙低功耗和2.4GHz应用的真正系统级芯片(SoC),器件集成了RF和高性能低功耗8051 MCU内核,支持250kbps, 500kbps, 1Mbps和2Mbps数据速率,可编输出功率高达0dBm,1Mbps时的接收灵敏度–94 dBm,主要用在2.4GHz蓝牙低功耗系统,人机接口如键盘,鼠标和遥控,体验生活和休闲设备,手机和消费类电子.本文介绍了CC2541主要特性,框图和典型应用电路,以及邮票大小的蓝牙模块的参考设计主要特性,电路图,材料清单和PCB元件布局图.

The CC2541 is a power-optimized true system-on-chip (SoC) solution for both Bluetooth low energy and proprietary 2.4-GHz applications. It enables robust network nodes to be built with low total bill-of-material costs. The CC2541 combines the excellent performance of a leading RF transceiver with an industry-standard enhanced 8051 MCU, in-system programmable flash memory, 8-KB RAM, and many other powerful supporting features and peripherals. The CC2541 is highly suited for systems where ultralow power consumption is required. This is specified by various operating modes. Short transition times between operating modes further enable low power consumption.

The CC2541 is pin-compatible with the CC2540 in the 6-mm × 6-mm QFN40 package, if the USB is not used on the CC2540 and the I2C/extra I/O is not used on the CC2541. Compared to the CC2540, the CC2541 provides lower RF current consumption. The CC2541 does not have the USB interface of the CC2540, and provides lower maximum output power in TX mode. The CC2541 also adds a HW I2C interface.

The CC2541 is pin-compatible with the CC2533 RF4CE-optimized IEEE 802.15.4 SoC.

The CC2541 comes in two different versions: CC2541F128/F256, with 128 KB and 256 KB of flash memory, respectively.

CC2541主要特性:

RF 
2.4-GHz Bluetooth low energy Compliant and Proprietary RF System-on-Chip
Supports 250-kbps, 500-kbps, 1-Mbps, 2-Mbps Data Rates
Excellent Link Budget, Enabling Long-Range Applications Without External Front End
Programmable Output Power up to 0 dBm
Excellent Receiver Sensitivity (–94 dBm at 1 Mbps), Selectivity, 
and Blocking Performance
Suitable for Systems Targeting Compliance With Worldwide Radio 
Frequency Regulations: ETSI EN 300 328 and EN 300 440 Class 2 (Europe), 
FCC CFR47 Part 15 (US), and ARIB STD-T66 (Japan)
Layout 
Few External Components
Reference Design Provided
6-mm × 6-mm QFN-40 Package
Pin-Compatible With CC2540 (When Not Using USB or I2C)
Low Power 
Active-Mode RX Down to: 17.9 mA
Active-Mode TX (0 dBm): 18.2 mA
Power Mode 1 (4-µs Wake-Up): 270 µA
Power Mode 2 (Sleep Timer On): 1 µA
Power Mode 3 (External Interrupts): 0.5 µA
Wide Supply-Voltage Range (2 V–3.6 V)
TPS62730 Compatible Low Power in Active Mode 
RX Down to: 14.7 mA (3-V supply)
TX (0 dBm): 14.3 mA (3-V supply)
Microcontroller 
High-Performance and Low-Power 8051 Microcontroller Core With Code Prefetch
In-System-Programmable Flash, 128- or 256-KB
8-KB RAM With Retention in All Power Modes
Hardware Debug Support
Extensive Baseband Automation, Including Auto-Acknowledgment and Address Decoding
Retention of All Relevant Registers in All Power Modes
Peripherals 
Powerful Five-Channel DMA
General-Purpose Timers (One 16-Bit, Two 8-Bit)
IR Generation Circuitry
32-kHz Sleep Timer With Capture
Accurate Digital RSSI Support
Battery Monitor and Temperature Sensor
12-Bit ADC With Eight Channels and Configurable Resolution
AES Security Coprocessor
Two Powerful USARTs With Support for Several Serial Protocols
23 General-Purpose I/O Pins (21 × 4 mA, 2 × 20 mA)
I2C interface
2 I/O Pins Have LED Driving Capabilities
Watchdog Timer
Integrated High-PerformanceComparator
Development Tools 
CC2541 Evaluation Module Kit (CC2541EMK)
CC2541 Mini Development Kit (CC2541DK-MINI)
SmartRF™ Software
IAR Embedded Workbench™ Available

软件特性:

Bluetooth v4.0 Compliant Protocol Stack for Single-Mode BLE Solution 
Complete Power-Optimized Stack, Including Controller and HostGAP – Central, Peripheral, Observer, or Broadcaster (Including Combination Roles)ATT / GATT – Client and ServerSMP – AES-128 Encryption and DecryptionL2CAP
Sample Applications and Profiles 
Generic Applications for GAP Central and Peripheral Roles
Proximity, Accelerometer, Simple Keys, and Battery GATT Services
More Applications Supported in BLE Software Stack
Multiple Configuration Options 
Single-Chip Configuration, Allowing Applications to Run on CC2541
Network Processor Interface for Applications Running on an External Microcontroller
BTool – Windows PC Application for Evaluation, Development, and Test

CC2541主要应用:

• 2.4-GHz Bluetooth low energy Systems 
• Proprietary 2.4-GHz Systems 
• Human-Interface Devices (Keyboard, Mouse,Remote Control) 
• Sports and Leisure Equipment
• Mobile Phone Accessories
• Consumer Electronics

图1. CC2541框图

图2. CC2541应用电路

CC2541蓝牙邮票块参考设计

The CC2541 Postage Stamp reference design contains the schematics and layout files for the CC2541PS Module. The reference design demonstrates good techniques for CC2541 decoupling and RF layout for a very compact 16.3mm x 13mm PCB . For optimum RF performance, the reference design should be copied accurately. This is a 2-layer PCB reference design using an integrated solution of a Johanson Chip balun(2450BM15A0002) and a Johanson chip antenna(2450AT42A100). The CC2541 Postage stamp is perfect for applications requiring proximity detecting and temperature sensing. It is ideal for proof of concept prototyping on existing systems.

CC2541蓝牙邮票块参考设计主要特性:

Affordable low cost, 2 layer board design in a compact form factor of 16.3mmX13mm 
Onboard chip antenna (from Johanson, 2450AT42A100) with integrated balun (from Johanson, 2450BM15A002) matching circuit, with 1 SPI, 1 I2C and 1 USART interface pinout 
Can be used for proximity sensing, temp data logging, quick prototyping and quick PoC (Proof of Concept) purposes 
Free schematics, BOM and gerber available online for download 

/fanga/UploadFiles_1068/201406/20140605112454822.jpg
图3.CC2541蓝牙邮票块参考设计外形图

图4.CC2541蓝牙邮票块参考设计电路图
CC2541蓝牙邮票块参考设计材料清单:


图5.CC2541蓝牙邮票块参考设计PCB元件布局图
详情请见:
http://www.ti.com/lit/ds/symlink/cc2541.pdf
http://www.ti.com/lit/ug/swru191f/swru191f.pdf

CC2541_CC2590_EM_Partlist.xls
CC2541EM_2layer_PARTLIST.xls

cc2541.pdf
swru191f.pdf

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