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RF4432-B | SI4432 Wireless Transceiver module, Distance 2500m
- Ultra-thin ultra-small (38x20mm)
- Using the latest version of the U.S. SI4432 IC
- Frequency range: 433.92M
- Sensitivity up to-121dBm
- Ddata transfer rate:0.123-256kbps
- FSK, GFSK and OOK modulation
- Power supply: 1.8-3.6 V
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$16
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The 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 Define
| 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. |
