> For the complete documentation index, see [llms.txt](https://bananapi.gitbook.io/bpi-g1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bananapi.gitbook.io/bpi-g1/zh/someofthefeaturesticc25401.md).

# Some of the features TI CC2540/1

* Excellent performance and low power 8051 microcontroller core with code prefetch feature
* 256K system programmable flash memory
* 8KB RAM, with a power supply in a variety of data retention
* Hardware debugging support
* The powerful 5-channel DMA
* Extended baseband automation, including automatic recognition and address 
* General-purpose timers (one 16bit, two 8bit)
* IR generating circuit
* 32-kHz sleep timer capture
* Accurate digital RSSI / LQI support
* 2 channels can be configured 12-bit ADC resolution
* AES security coprocessor
* 2 Powerful USART interface to support multiple serial protocol
* 1 common SPI interface
* 8 general purpose I / O pins (6 × 4 mA, 2 × 20 mA)
* Watchdog Timer
* Wireless Performance
  1. Suitable excellent receiver sensitivity (at 1 Mbps is -94 dBm), selectable, and barrier properties
  2. Programmable output power up to 4dBm (2540) / 0dBm (2541)
* 2541 Low Power
  1. RX mode low: 17.9 mA
  2. Mode TX (0 dBm): 18.2 mA
  3. Power mode 1 (4-μs wake): 270 μA
  4. Power Mode 2 (Sleep timer open): 1 μA
  5. Power Mode 3 (external interrupts): 0.5 μA
  6. Wide supply voltage range (2 V-3.6 V)
* 2540 Low Power
  1. RX mode low: 19.6 
  2. Mode TX (-6 dBm): 24 mA
  3. Power mode 1 (3-μs wake): 235 μA
  4. Power Mode 2 (Sleep timer Open): 0.9 μA
  5. Power Mode 3 (external interrupts): 0.4 μA
  6. Wide supply voltage range (2 V-3.6 V)