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UART Wireless FSK Transceiver Module Base on CMT2310 RF Chip

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.
  • DL-RTM300-B

  • DreamLNK/骏晔

  • DL-RTM300-B

  • 433MHz/868MHz/915MHz

  • CMT2310

  • 20dBm

  • 2.0~3.6V

  • -120dBm

  • 1800m

  • 15*13.8*2.5mm

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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 do


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

2310_02

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



Product size:

2310_01


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!

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