Low cost 2.4GHz wireless transceiver chip -- ci24r1

Ci24R1 It's a job in 2.4GHz ISM Frequency band , Designed for low-cost wireless applications , Integrated embedded ARQ Wireless transceiver chip of baseband protocol engine . The operating frequency range is 2400MHz-2525MHz, share 126 individual 1MHz Bandwidth channel .

Ci24R1 use GFSK/FSK Digital modulation and demodulation technology . Data transfer rate and PA The output power can be adjusted , Support 2Mbps, 1Mbps, 250Kbps Three data rates . High data rate can complete the same data sending and receiving in a shorter time , So it can have lower power consumption . Ci24R1 Internal integration compatibility BLE4.2 The standard PHY And MAC, It is very convenient to realize data interaction with mobile phones .

Ci24R1 The operation mode is very convenient , Just a microcontroller （MCU） Through the second line SPI The interface configures a few registers on the chip, which can realize data transmission and communication . The embedded ARQ The baseband engine is based on the principle of packet communication , Support multiple communication modes , It can be manually or fully automatic ARQ Protocol operation . Internal integrated transceiver FIFO, It can ensure that the chip and MCU Continuous data transmission , Enhanced ARQ The baseband protocol engine can handle all high-speed operations , So it's greatly reduced MCU System consumption .

Ci24R1 With very low system application cost , Just one MCU And a small number of peripheral passive components can form a wireless data transceiver system . High internal integration PSRR Of LDO Power Supply , Guarantee 2.1-3.6V Stable operation in wide power supply range ; Numbers I/O compatible 2.5V/3.3V/5V And so on I/O voltage , Can work with all kinds of MCU Port direct connection , Crystal oscillator capacitor is integrated inside the chip , The temperature compensation of crystal oscillator can be realized , Realize wide temperature range operation .

The main features ：

Working in 2.4GHz ISM Frequency band

Modulation mode ：GFSK/FSK

Data rate ：2Mbps/1Mbps/250Kbps

compatible BLE4.2 PHY&MAC

Ultra low shutdown power consumption ：2uA

Fast start time ：≤ 160uS

High internal integration PSRR LDO

Wide power supply voltage range ：2.1-3.6V

Low cost crystal oscillator ：16MHz±60ppm

Reception sensitivity ：-80dBm @2MHz

Maximum transmit power ：+11dBm

Receiving current （2Mbps）：20mA

Two lines SPI Interface

Internal integrated intelligence ARQ Baseband protocol engine

Transmit and receive data hardware interrupt output

Support 1bit RSSI Output

A small number of peripheral devices , Reduce the cost of system application

SOP8 encapsulation

Range of application ：

Wireless mouse 、 keyboard

Wireless remote control 、 Somatosensory equipment

Smart grid 、 Smart home

Wireless audio

Wireless data transmission module