RF4432-B module

  Product InfomationThe module is based on SI4432 from Silicon labs.The -121dBm and +20dBm output power ensures extended range,make the module suitable for long range applications.Its communication distance up to 2500m.User can modify the internal parameters through the SPI interface.The Module is with a nickel-plated shield cover to enhance anti-interference ability greatly.  Ultra-thin ultra-small (38x20mm) Good harmonics The penetration ability (measured through 4-6 floors) Using the latest version of the U.S. SI4432 IC, stable performance Frequency range: 433.92M Sensitivity up to-121dBm Maximum output power: 20dBm Ddata transfer rate:0.123-256kbps FSK, GFSK and OOK modulation Power supply: 1.8-3.6 V Ultra-low-consumption shutdown mode Digital received signal strength indication (RSSI) Wake time Automatic matching and two-way antenna switch control Configurable packet structure Preamble detection 64-byte send and receive data register (FIFO) Low power detection 8-bit ADC and temperature sensor Operating temperature range: -20 ~ +60 ° C Integrated voltage regulator Frequency hopping Power-on reset function Built-in lens adjustment Pin No. Pin Definition Description 1 VCC Power supply 2 GND Ground 3 NC No Connect 4 NC Connect 5 SDN Shutdown input pin.0–VDD V digital input.SDN should be = 0 in all modes except Shutdown mode.When SDN =1 the chip will be completely shutdown and the contents of the registers will be lost. 6 nIRQ General Microcontroller Interrupt Status output 7 nSEL Serial Interface Select input. 0– VDD V digital input.This pin provides the Select/Enable function for the 4-line serial data bus. The signal is also used to signify burst read/write mode. 8 GND Ground 9 SCLK Serial Clock input.0–VDD V digital input.This pin provides the serial data clock function for the 4-line serial data bus. Data is clocked into the Si4430/31/32 on positive edge transitions.  10 SDI Serial Data input. 0–VDD V digital input. This pin provides the serial data stream for the 4-line serial data bus. 11 SDO 0–VDD V digital output that provides a serial readback function of the internal control registers 12 GPIO2 Test receiver sensitivity  13 NC No Connect 14 NC No Connect 15 GND Ground 16 ATN Extra antenna or TR switch control to be used if more GPIO are required. Pin is a hardwired version of GPIO setting 11000, Antenna 2 and can be manually controlled by the antdiv[2:0] bits in register 08h.