UART Wireless FSK Transceiver Module Base on CMT2310 RF Chip
Product Description
433/868/915MHz RF Transceiver Module with -120dBm Sensitivity and FSK Rate Range 2.4Kbps
DL-RTM300-B RF Module is an UART wireless serial port module with AT commands. It combines an integrated RF Controller with ARM Cortex-M0 32-bit core, 64kB on-chip Flash, 8kB on-chip SRAM, and supports hardware parity check. The Clock Speed of the main frequency can reach up to 48MHz. The high efficiency of receiving sensitivity enables this RF module to have excellent RF performance and strong anti-interference ability in the 420-510MHz/860-950MHz frequency bands. Meanwhile, this DL-RTM300-B RF Module is equipped with fully functional AT commands that support any serial baud rate of 1920-256000bps, which can improve its communication efficiency.
It also has defaulted low power consumption software, as well as other muti-functions serial port programs when it is manufactured. At the same time, a variety of Wireless Baud Rates and functions can be configured, including Long-range Spread Spectrum Mode and Universal Mode, Wake-on-Radio (eWOR) function, etc. These different configurations can provide simple and efficient solutions for various long-range communication, or battery powered applications.
Features
● Wide voltage range supported: 1.8~3.6V;
● Ultra-low sleep current < 1uA;
● High efficiency receiving performance (RX current @ 9.5mA);
● Transmitting current: 77mA;
● Efficient receiver sensitivity: -120dBm @ FSK (433M, 2.4kbps);
● Easily configure and save with AT command, facilitating development and debugging;
● Support transparent transmission mode for data transmission;
● Support any serial baud rate of 1920-256000bps;
● Support RSSI acquisition at any time;
● Fixed Point, Broadcasting and Monitoring transmissions are all available.
Typical Application
● Smart Grid and Automatic Meter Reading (water meter, electricity meter, gas meter)
● Long-Range Data Communication
● Smart Home Systems
● Wireless Sensor Networks
● Industrial Automation (Data Acquisition)
● Remote Control and Telemetry of Field Data
● Various Transmitter, Intelligent Flow Meter Instrument
● Building Automation and Security
● Monitoring and Control of Petroleum Equipment in Mines
● Environment, Energy Saving, Temperature Monitoring
● Intelligent Transportation, Smart City
● Intelligent Robot
● Home and Building Automation
● Wireless Alarm and Security Systems
● New energy vehicles, intelligent cabins
● Industrial Monitoring and Control
● Wireless M-BUS
Download Center
DL-RTM300-B Specification V1.0
Technical Parameter
Recommended working range
Parameter | Min. | Typical | Max. | Unit | Remarks |
Operating Conditions | |||||
Working Voltage | 2.0 | 3.3 | 3.6 | V | Voltage above range may damage the RF module |
I/O Voltage Range | 1.8 | 3.3 | 3.6 | V | Recommended Operating voltage is +3.3V |
Working Temperature | -40 | 25 | 85 | ℃ | |
Current Consumption | |||||
Receiving Current | 8 | 8.5 | 8.8 | mA | @ Radio Frequency Receiving Current (MCU sleep) |
Receiver Working Current | 8.3 | 9.5 | 10.5 | mA | @ Overall Receiving Current |
Transmitting Current | 55 | 64 | 77 | mA | @433M 20dBm Peak value |
43 | 57 | 71 | mA | @868M 20dBm Peak value | |
43 | 57 | 71 | mA | @915M 20dBm Peak value | |
Standby Current | 1 | 1.8 | 3 | mA | @ RF Receive Function Disable |
Sleep Current | 0.7 | 1 | 2 | uA | @M1=0,RXGAS=0 |
RF Parameters | |||||
Recommended Frequency (Ensure best performance)) | 420 | 433.92 | 510 | MHz | @433Mh RF module |
840 | 868 915 | 930 | MHz | @868Mhz/915Mhz RF module | |
Transmitting Power Range | -4 | 20 | 20 | dBm | @Please refer to the Frequency command for details |
Max. Receiver Sensitivity @ FSK | -117 | dBm | @868Mhz/915Mhz @2400bps | ||
-120 | dBm | @433Mhz @2400bps | |||
FSK Rate Range | 2.4 | Kbps | @Please refer to the Rate command for details | ||
DL-RTM300-B Pins Definition
No. | Pin Name | I/O type | Function Description |
1 | GND | PWR | Reliable Ground |
2 | VDD | PWR | To maximize the chip function, ≥3V stable voltage is recommended |
3 | PC13 | Out | AUX |
4 | PA2 | Out | (AT UART TX) TTL serial port output, connect to external RXD input pin |
5 | PA3 | In | (AT UART RX) TTL serial port input, connect to external TXD output pin |
6 | PA4 | In | Mode selection pins: high-level normal mode, low-level LP mode |
7 | PA6 | IO | I2C2_SCL, ADC_IN6, TIM3_CH1, EVENT_OUT |
8 | PA12 | IO | I2C2_SDA, COMP_OUT, EVENT_OUT |
9 | PB13 | IO | I2C2_SCL, TIM1_CH1N |
10 | RESET | In | Reset pin, effective at low level |
11 | PB14 | IO | I2C2_SDA, TIM1_CH2N, OPAMP_VINP |
12 | PB15 | IO | TIM1_CH3N, RTC_REFIN |
13 | PA8 | IO | TIM1_CH1, EVENT_OUT, SPI2_NSS |
14 | PA9 | IO | USART1_TX, TIM1_CH2, SPI2_SCK |
15 | PA10 | IO | USART1_RX, SPI2_MISO |
16 | PA11 | IO | EVENT_OUT, SPI2_MOSI |
17 | SWDIO | I | SWD debugging interface, serial data signal |
18 | SWDCLK | I | SWD debugging interface, serial clock signal |
19 | GND | PWR | Reliable Ground |
20 | ANT | AI/AO | RF signal input/output port, π-matching circuit must be reserved; Adopt 50Ω impedance matching for RF routing, route the ground and add via holes around it |
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Dreamlnk is a high-tech enterprise specializing in ISM band micropower wireless communication technology, providing different kinds of wireless modules and one-stop IoT solutions, including 433/868/915MHz wireless modules, 2.4G wireless Modules, FSK Transceiver Modules, Antennas, Remote Controls, and customized wireless RF solutions. Welcome to inquire!