1. Introduction
1.1 Purpose& Description
The DSM-020 is a low-power, embedded Zigbee module. The module consists of a EFR32MG13P732 highly integrated wireless RF processor chip and a small number of peripheral devices. It has a built-in 802.15.4 PHY/MAC Zigbee network protocol and a large number of library functions.
The DSM-020 embeds a low-power 32-bit ARM Cortex-M4 core, 512KByte Flash program memory, 64KB RAM data memory, and a wealth of peripheral resources.
The DSM-020 is a FreeRTOS platform that gathers all Zigbee MAC and TCP/IP libraries into one place. It enables users to build on the product and develop embedded Zigbee products that suit their individual needs.
1.2 Product Feature Summary
– A built-in low-power 32-bit ARM Cortex-M4 processor with a DSP instruction set and a floating point unit that doubles as an application processor
– Supports a main frequency of 40MHz
– Wide operating voltage: 1.8V-3.8V
– Peripherals: 9×GPIOs, 1×UART, 1×ADC
– Zigbee operating characteristics
- Supports 802.15.4 MAC/PHY
- Operating channels 11 to 26 @2.400-2.483GHz, air-interface rate 250Kbps
- Built-in DC-DC circuit for maximum power efficiency
- +19dBm maximum output, dynamic power output > 35dB
- 63uA/MHz operating power consumption; 1.4 uA sleep current
- Active net pairing with terminal devices
- Built-in onboard PCB antenna/reserved Ipex connector for high gain external antenna
- Operating temperature: -40℃ to 85℃
- Supports hardware encryption and supports AES 128/256
1.3 Main Application Fields
- Smart buildings
- Smart homes/appliances
- Smart plugs, smart lighting
- Industrial wireless control
- Health and measurements
- Asset tracking
2. Mechanical Design
2.1 Module Dimensions
DSM-020 has 2 rows of pins with a 2mm gap.
Size: 16 mm(W)* 24mm(L) * 3.5mm(H)
2.2 Pin Definition
| Pin number | Symbol | IO Type | Function |
|---|---|---|---|
| 1 | nRST | I | Hardware reset pin, the chip is reset when the pin is LOW; Power-on reset of the module, the user can use this pin as needed |
| 2 | ADC | AI | ADC, 12-bit precision SAR analog to digital converter |
| 3 | NC | - | NC pin, external handling is not required |
| 4 | GPIO0 | I/O | GPIO pin usage. |
| 5 | SWO | I/O | GPIO pin usage/can be used as an output pin under JLINK communication. |
| 6 | PWM3 | I/O | GPIO pin usage. |
| 7 | PWM1 | I/O | GPIO pin usage. |
| 8 | VCC | P | Module power supply pin (common supply voltage: 3.3V) |
| 9 | GND | P | The reference ground of the module. |
| 10 | GPIO2 | I/O | GPIO pin usage. |
| 11 | SWDIO | I/O | JLINK SWDIO programming pin. Can be used as a GPIO pin in normal applications. |
| 12 | SWCLK | I/O | JLINK SWCLK programming pin. Can be used as a GPIO pin in normal applications. |
| 13 | PWM2 | I/O | GPIO pin usage. |
| 14 | GPIO3 | I/O | GPIO pin usage. |
| 15 | RXD | I/O | UART0_RXD |
| 16 | TXD | O | UART0_TXD |
2.3 PCB Packaging
3. Electrical Characteristics
3.1 Absolute Electrical Characteristics
| Parameters | Description | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Ts | Storage temperature | -50 | 150 | ℃ |
| VCC | Input voltage | -0.3 | 3.8 | V |
| Electrostatic discharge voltage (human-body model) | TAMB-25℃ | - | 2.5 | KV |
| Electrostatic discharge voltage (machine model) | TAMB-25℃ | - | 0.5 | KV |
3.2 Operating conditions
| Parameters | Description | Minimum value | Typical value | Maximum value | Unit |
|---|---|---|---|---|---|
| Ta | Operating temperature | -40 | - | 85 | ℃ |
| VCC | Operating voltage | 1.8 | 3.3 | 3.8 | V |
| VIL | I/O low input | -0.3 | - | VCC*0.25 | V |
| VIH | I/O high input | VCC*0.75 | - | VCC | V |
| VOL | I/O low output | - | - | VCC*0.1 | V |
| VOH | I/O high output | VCC*0.8 | - | VCC | V |
| Imax | I/O drive current | - | - | 12 | mA |
3.3 Zigbee TX Power Consumption
| Symbol | Rate | Transmission power | Typical value | Unit |
|---|---|---|---|---|
| IRF | 250Kbps | +19dBm | 120 | mA |
| IRF | 250Kbps | +13dBm | 50 | mA |
| IRF | 250Kbps | +10dBm | 32 | mA |
| IRF | 250Kbps | +4dBm | 17 | mA |
| IRF | 250Kbps | +1dBm | 11.8 | mA |
3.4 ZigBee RX Power Consumption
| Symbol | Rate | Typical value | Unit |
|---|---|---|---|
| IRF | 250Kbps | 8 | mA |
3.5 Power Consumption in Operating Mode
| Operation Mode | Operating condition,(Ta=25°C) | Average value | Maximum value | Unit |
|---|---|---|---|---|
| Quick configuration | Module in quick configuration state | 10 | 40 | mA |
| Network connection state | Connected to a network | - | - | mA |
| Deep sleep mode | Deep sleep mode and retains 64KB RAM | 1.4 | 3 | uA |
4. RF Features
4.1 Basic RF Features
| Parameter | Description |
|---|---|
| Operating frequency | 2.400 to 2.484GHz |
| Physical layer standard | IEEE 802.15.4 |
| Data transfer rate | 250Kbps |
| Antenna type | PCB antenna/Ipex connector external antenna |
| Line of sight | >150m |
4.2 ZigBee Output Power
| Parameter | Minimum value | Typicalvalue | Max | Unit |
|---|---|---|---|---|
| Maximum output | - | 19 | - | dBm |
| Minimum output | - | -30 | - | dBm |
| Output power adjustment step | - | 0.5 | 1 | dB |
| Frequency error | -15 | - | 15 | ppm |
| Output adjacent channel suppression | - | -31 | - | dBc |
Note: The maximum output power is +19dBm. The power output can be adjusted under normal use. The high-power output can be used for overlay transmissions in extremely complex environments, such as modules embedded in the wall.
4.3 RF RX sensitivity
| Parameter | Minimum value | Typical value | Maximum value | Unit |
|---|---|---|---|---|
| PER<10%, RX sensitivity, [email protected] | - | -101 | - | dBm |
5. Production Guide
The storage conditions for the module after it has been shipped are as follows:
- The moisture resistant bag must be stored at a temperature below 30℃, and under a relative humidity below 85%.
- The shelf life of dry packed products is 6 months following the packaged date important information.
- All line workers must wear anti-static wrist straps and anti-static clothing throughout the entire production process.
- It is strictly prohibited to allow a module to come into contact with water or other contaminants during operations.
6. Package
| Product type | MOQ | Packing method | Number of Modules in Each Reel Pack | Number of Reel Packs in Each Box |
|---|---|---|---|---|
| DSM-020 | 4000 | Carrier tape and reel packing | 800 | 5 |
7. Firmware for different devices
There are different firmware corresponding to different wireless device applications.
| Wireless Devices | Firmware version |
|---|---|
| Lighting | DSM-020_Lighting.bin |
| Dimmer | DSM-020_Dimmer.bin |
| Breaker | DSM-020_breaker.bin |
| Switches | DSM-020_Switch.bin |
| Plug | DSM-020-Plug.bin |
| Strip | DSM-020-Strip.bin |
| Smart Lock | DSM-020-Lock.bin |
| Door sensor | DSM-020-Door sensor.bin |
| Motion sensor | DSM-020-Motion sensor.bin |
| Water Leakage sensor | DSM-020-Water Leakage sensor.bin |
| Temp&Hum sensor | DSM-020-Temp&Hum sensor.bin |
8. How to connect cloud platform
8.1 ZigBee Connection
8.2 MQTT configuration
2. Switch to cloud configuration menu and fill in the MQTT credentials of your server.
| API | Document |
|---|---|
| Lighting | RB Gateway Platform Protocol |
| Dimmer | RB Gateway Platform Protocol |
| Breaker | RB Gateway Platform Protocol |
| Switches | RB Gateway Platform Protocol |
| Plug | RB Gateway Platform Protocol |
| Strip | RB Gateway Platform Protocol |
| Smart Lock | RB Gateway Platform Protocol |
| Door sensor | RB Gateway Platform Protocol |
| Motion sensor | RB Gateway Platform Protocol |
| Water Leakage sensor | RB Gateway Platform Protocol |
| Temp&Hum sensor | RB Gateway Platform Protocol |
