*@CC2540 头文件下载

在2010年底TI推出了完整形蓝牙低功耗单模式芯片CC2540,　主要面向手机附件、消费电子、计算机接口设备、健康、医疗、个人运动设备，可以使用钮扣电池作为电源。

和CC2530一样，它还是8051的内核，甚至CC2530RF之外的程序可以直接在CC2540上运行。采用QFN40　6mm*6mm的封装，内部FLASH有128KB,256KB两种规格，而RAM统一为8K.　
特性
True Single-Chip BLE Solution: CC2540 Can Run Both Application  and BLE Protocol Stack, Includes Peripherals to Interface With Wide  Range of Sensors, Etc.  6-mm × 6-mm Package RF  Bluetooth low energy technology Compatible  Excellent Link Budget (up to 97 dB), Enabling Long-Range Applications  Without External Front End  Accurate Digital Received Signal-Strength Indicator (RSSI)  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 QFN40 Package Low Power  Active Mode RX Down to 19.6 mA  Active Mode TX (–6 dBm): 24 mA  Power Mode 1 (3-μs Wake-Up): 235 μA  Power Mode 2 (Sleep Timer On): 0.9 μA  Power Mode 3 (External Interrupts): 0.4 μA  Wide Supply Voltage Range (2 V–3.6 V)  Full RAM and Register Retention in All Power Modes Microcontroller
IAR for 8051 7.51A以上版本支持cc2540的开发。TI原装开发工具，售价$99。目前还没有国产的开发工具，不过相信到2011年夏秋就会有了。目前已经有人开始玩CC2540，但是发现直接安装的IAR for 8051 7.51A并没有cc2540的头文件iocc2540.h和仿真用的cc2540.ddf文件。把它挂在这里，用到这个补丁的就自己下。

IAR for 8051 7.51A

IAR for 8051 7.60