Nanjing Zhongke Microelectronics Ci24R1

Ci24R1 is a single chip transceiver with an embedded ARQ baseband protocol engine, suitable for ultra- low cost wireless applications and is designed for operation in the 2.4GHz ISM frequency band at 2400MHz to 2525MHz. The operating frequency band is divided into 126 RF channels and the resolution of the RF channel frequency setting is 1MHz. Ci24R1 uses GFSK/FSK digital modulation and demodulation. Both air data rate and PA output power are configurable. The air data rate can be programmed to 2Mbps, 1Mbps and 250Kbps. The higher data rate contributes the lower power consumption because it takes less time to transmit or receive signals. Ci24R1, which is compatible with BLE4.2 standard PHY and MAC, can be very convenient to interact with mobile data. Ci24R1 is easy to use, and it can realize communication only by configuring several registers through the 2- wire SPI with an MCU(microcontroller). The embedded ARQ baseband protocol engine is based on packet communication and supports various modes from manual operation to advanced autonomous ARQ protocol operation. Internal FIFOs ensure a smooth data flow between the radio front end and the system's MCU. Enhanced ARQ baseband protocol engine reduces system consumption of MCU by handling all high speed link layer operations. Ci24R1 has very low cost of system application. To design a radio system with the Ci24R1, you simply need a microcontroller and a few external passive components. Internal integrated high PSRR LDO ensures Ci24R1 to work steadily within 2.1 - 3.6V wide power supply. Digital I/O is compatible with several I/O voltage standards such as 2.5V/3.3V/5V, and it can be connected directly to various MCU I/O ports. The internal integrated crystal oscillator capacity can realize the temperature compensation of the crystal oscillator capacity and the wide range of temperature.

• Worldwide 2.4GHz ISM band operation
• Modulation: GFSK/FSK
• Air data rate: 2Mbps/1Mbps/250Kbps
• BLE4.2 PHY&MAC compatibility
• Ultra low shutdown current: 2uA
• Ultra low standby current: 20uA
• Max 160us start- up from standby mode
• Internal integrated high PSRR LDO
• Supply range: 2.1 - 3.6V
• Digital I/O voltage range: 1.9 - 3.6V
• Receiving sensitivity: - 80dBm @2Mbps
• Maximum transmission power: 9dBm
• RX supply current (2Mbps): 20mA
• Maximum rate 10MHz, 2- wire interface SPI
• Embedded ARQ baseband protocol engine
• TX/RX Hardware interrupt output
• Support 1bit RSI output
• Minimal peripheral devices, reducing system application costs
• SOP- 8 package or DFN- 8 package

• Wireless mouse and keyboards
• Remote control
• Somatosensory device
• Smart Grid and Home automation
• Wireless audio
• Wireless data transceiver module