Ci24r1 low-cost 2.4G wireless transceiver chip replaces xn297 compact si24r1

CI24R1 brief introduction

　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 . 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 , Achieve a wide temperature range .

CI24R1 As SI24R1 Low cost solutions , The main advantages are as follows ：

1、 communication interface ：CI24R1 Use two lines SPI, Save the host IO resources .
2、 RF circuits ： The chip has built-in balun matching , The peripheral circuit is very simple , Maximum transmit power +11dbm, Open distance 400-500 rice .
3、 working temperature ： -45℃-125℃ High and low temperature environment It can communicate normally and stably .
4、 New packet processing protocol ： Support bluetooth BLE4.2 Pattern .
5、 just SOT23-6 The basis of encapsulation MCU The driver can be realized , And there's one more PWM Dimming IO.

CI24R1 Application field

replace XN297
· Wireless mouse 、 keyboard 、 Wireless remote control 、 Somatosensory equipment 、 Toy remote control
· Smart grid 、 Smart home
· Wireless audio
· Wireless data transmission module