[Introduction]:E48-433M20S is a pure hardware, cost-effective wireless data transmission module developed by Chengdu Ebyte based on Huapu Microelectronics' CMT2310A chip solution. The wireless module supports a maximum transmit power of 20dBm, and users can set lower output power to reduce power consumption. The module works in the frequency band, covering the commonly used 433MHz frequency band. The module is a pure hardware RF transceiver module that uses an SPI interface and requires an external MCU driver.
Pin number | Pin name | Pin direction | Pin usage |
1 | GND | - | D2 ground wire, connected to the power reference ground |
2 | GND | - | Ground wire, connected to the power reference ground |
3 | GND | - | Ground wire, connected to the power reference ground |
4 | GND | - | Ground wire, connected to the power reference ground |
5 | GND | - | Ground wire, connected to the power reference ground |
6 | GPIO4 | DI/O | Configurable multi-function IO port (see CMT2310A manual for details) |
7 | GPIO5 | DI/O | Configurable multi-function IO port (see CMT2310A manual for details) |
8 | GPIO3 | DI/O | Configurable multi-function IO port (see CMT2310A manual for details) |
9 | VCC | - | Power supply, power input pin supports 1.8-3.6V |
10 | GND | - | Ground wire, connected to the power reference ground |
11 | GND | - | Ground wire, connected to the power reference ground |
12 | GND | - | Ground wire, connected to the power reference ground |
13 | GPIO0 | DI/O | Configurable multi-function IO port (see CMT2310A manual for details) |
14 | NIRQ | DI/O | Configurable multi-function IO port (see CMT2310A manual for details) |
15 | GPIO2 | DI/O | Configurable multi-function IO port (see CMT2310A manual for details) |
16 | MISO | DO | SPI data output |
17 | MOSI | DI | Data input for SPI |
18 | SCLK | DI | SPI clock pin |
19 | CSB | DI | SPI access register chip select |
20 | GND | - | Ground wire, connected to the power reference ground |
21 | ANT | - | Block RF stamp hole interface, equivalent impedance is about 50Ω |
22 | GND | - | Ground wire, connected to the power reference ground |