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VWBK1 is a single-chip online voice Wi-Fi module. It supports online voice interaction and AIoT. It can be used in Amazon Alexa scenarios and Bluetooth voice transmission scenarios, to help customers access the IoT/smart speaker/smart gateway by voice.
VWBK1 is a module with an onboard antenna. Its front side is sheild case. The physical module is shown below:
Physical map of module (top)
Physical map of module (bottom)
There are pins on three sides of module VWBK1. The onboard antenna is on the fourth side. There are 39 pins in total, and the distance between two pins is 1.5mm. The dimensions of VWBK1 are 20mm (W) *28mm (L) *3.6mm (H). The following figure is a schematic diagram of the dimensions of VWBK1 (unit: mm)
The voice interaction of VWBK1 needs an external microphone, amplifier, and speaker. VWBK1 is the voice solution to Amazon Alexa. The logic of its keys and indicator light must meet specific requirements. Requirements on peripherals:
Microphone (required): Currently, two microphones are needed. The distance between them is recommended to be 40-80mm. For specific requirements on the microphone, please consult Tuya technicians, or you can also refer to the Guide to Selection of Microphone and Speaker of Voice Module.
Power amplifier (required): The power amplifier must be selected based on the speaker. For specific requirements on the power amplifier, please consult the Tuya technicians, or you can also refer to the Guide to Selection of Microphone and Speaker of Voice Module.
-Speaker (required): The speaker must conform to its specifications. For specific specifications and structural design of the speaker, please consult Tuya technicians, or you can also refer to the Guide to Selection of Microphone and Speaker of Voice Module.
Indicator light (required): The Amazon voice system supports linear light, single light and ring light.
Key (required): The Amazon voice system supports the microphone disable/wake up/volume up/volume down keys.
The interfaces of the module are shown below:
There are 39 pins in total. Their functions and definitions are shown below:
Pin number | Function | Type | Description |
---|---|---|---|
2 | TX1 | IO | TX1, used for communicating with MCU |
3 | RX1 | IO | RX1, used for communicating with MCU |
4,5 | VCC | P | Power supply |
1,6,13,26,32 | GND | P | Ground |
7 | DN/PWM3 | IO | DN of USB or PWM3 for the C light |
8 | DP/PWM4 | IO | DP of USB or PWM4 for W light |
9 | ADC13 | AI/IO | ADC13, reserve for peripherals. Also can be used as GPIO. |
10 | ADC12 | AI/IO | ADC12, reserve for keys, for example, volume +/-/phone. |
11 | PWM9 | IO | PWM9 dimming interface (by default, it is the indicator light of voice, red) |
12 | PWM8 | IO | PWM8 dimming interface (by default, it is the indicator light of voice, green) |
14 | PWM7 | IO | PWM7 dimming interface (by default, it is the indicator light of voice, blue) |
15 | PWM6 | IO | Used to drive the green light, reserved to be used for infrared transmission |
16 | PWM10 | IO | Used to drive the red light, reserved to be used for infrared receiving |
17 | ROUT-P | AO | Right channel, output, positive, connected to the external power amplifier to drive the speaker |
18 | ROUT-N | AO | Right channel, output, negative, connected to the external power amplifier to drive the speaker |
19 | LOUT-N | AO | Left channel, output, negative, connected to the external power amplifier to drive the speaker |
20 | LOUT-P | AO | Left channel, output, positive, connected to the external power amplifier to drive the speaker |
21 | MIC1P | AI | MIC1 positive, used as the input interface of AEC |
22 | MIC1N | AI | MIC1 negative, used as the input interface of AEC |
23 | GPIO24 | IO | Used to enable the power amplifier, SPK-EN |
24 | MIC2P | AI | MIC2 positive, used as the input interface of AEC |
25 | MIC2N | AI | MIC2 negative, used as the input interface of AEC |
27 | MIC3P | AI | MIC3 positive, connected to the external microphone |
28 | MIC3N | AI | MIC3 negative, connected to the external microphone |
29 | MIC4P | AI | MIC3 positive, connected to the external microphone |
30 | MIC4N | AI | MIC3 negative, connected to the external microphone |
31 | MICBIAS | P | Used to connect to the power supply of the microphone |
33 | GPIO2 | IO | Input signals, used to detect the on/off of the microphone |
34 | PWM0 | IO | PWM0, used to drive the blue light |
35 | SDA | IO | The data interface of the I2C (need to connect to the pull-up resistor). It can be used to drive the ring light and other I2C sensory components |
36 | SCL | IO | The clock interface of the I2C (need to connect to the pull-up resistor). It can be used to drive the ring light and other I2C sensory components |
37 | TX3 | IO | Transmitting interface of UART3, debugging interface |
38 | RX3 | IO | Receiving interface of UART3, debugging interface |
39 | RST | I | Reset pin |
I/O is the common input/output pin, P is the power supply and ground pin, AI is the Analog input pin, and AO is the analog output pin.
Parameter | Description | Minimum value | Maximum value | Unit |
---|---|---|---|---|
Ts | Storage temperature | -55 | 125 | ℃ |
VCC | Power supply voltage | 3.3V | 4.2 | V |
ESD voltage (human body model) | TAMB-25℃ | - | ± 2000 | KV |
ESD voltage (machine model) | TAMB-25℃ | - | - | KV |
Supply voltage 3.3 to 4.2V, 3.3V preferred |
Parameter | Description | Minimum value | Typical value | Maximum value | Unit |
---|---|---|---|---|---|
Ta | Operating temperature | -20 | 25 | 85 | ℃ |
VCC | Operating voltage | 3.3 | 3.3 | 4.2 | V |
VIL | Low voltage input | -0.3 | - | 1.32 | V |
VIH | High voltage input | 2.06 | - | 3.6 | V |
VOL | Low voltage output | -0.3 | - | 0.4 | V |
VOH | High voltage output | 2.9 | - | 3.6 | V |
Imax | Drive current | -35 | - | 35 | mA |
Operating status | Mode | Rate | Transmit power/receive | Average value | Peak value (Typical value) | Unit |
---|---|---|---|---|---|---|
Transmit | 11b | 11Mbps | +16dBm | 279 | 313 | mA |
Transmit | 11g | 54Mbps | +14dBm | 280 | 309 | mA |
Transmit | 11n | MCS7 | +13dBm | 274 | 304 | mA |
Receive | 11b | 11Mbps | Constantly receive | 184 | 187 | mA |
Receive | 11g | 54Mbps | Constantly receive | 184 | 187 | mA |
Receive | 11n | MCS7 | Constantly receive | 184 | 187 | mA |
Note: VBAT=3.3V
Working mode | Working status, Ta = 25℃, VCC=3.3V, not connected to PA power amplifier and loudspeaker | Average value | Maximum value | Unit |
---|---|---|---|---|
Fast connected | The module is fast connected to the network | 187 | 568 | mA |
Idle and connected | The module is connected to the network | 165 | 341 | mA |
Voice control | The module is connected to the network and waked up by voices | 240 | 564 | mA |
Parameter | Description |
---|---|
Operating frequency | 2.400 to 2.484 GHz |
Wi-Fi standard | 802.11 b/g/n (channels 1 to 14) |
Data transmission rate | 11b: 1, 2, 5.5, 11 (Mbps) 11g: 6, 9, 12, 18, 24, 36, 48, 54 (Mbps) 11n: HT20MCS (0~7) Bluetooth LE/BR/EDR 1M |
Antenna type | PCB antenna with a gain of 0.66 dBi |
TX performance
Parameter | Minimum value | Typical value | Maximum value | Unit |
---|---|---|---|---|
Average output power, 802.11b CCK Mode 11M | - | 16 | - | dBm |
Average output power, 802.11g OFDM Mode 54M | - | 14 | - | dBm |
Average output power, 802.11n OFDM Mode MCS7 | - | 13 | - | dBm |
Average output power, Bluetooth LE/BR/EDR 1M | - | 3 | - | dBm |
EVM@802.11b CCK 11 Mbps Mode 16 dBm | - | -23 | - | dB |
EVM@802.11g OFDM 54 Mbps Mode 13.5 dBm | - | -27 | - | dB |
EVM@802.11n OFDM MCS7 Mode 12 dBm | - | -28 | - | dB |
Frequency error | -10 | - | 10 | ppm |
RX sensitivity
Parameter | Minimum value | Typical value | Maximum value | Unit |
---|---|---|---|---|
PER<8%, RX sensitivity, 802.11b DSSS Mode 11M | - | -87 | - | dBm |
PER<10%, RX sensitivity, 802.11g OFDM Mode 54M | - | -71 | - | dBm |
PER<10%, RX sensitivity, 802.11n OFDM Mode MCS7 | - | -68 | - | dBm |
PER<30%,RX sensitivity, Bluetooth LE 1M | - | -88 | - | dBm |
By default, VWBK1 uses an onboard MIFA PCB antenna whose frequency band is 2.4G.
To ensure the optimal performance of Wi-Fi, it is recommended that the antenna should be 15mm away from other metal parts.
You should not wire or lay copper in the antenna area to avoid effects on the antenna performance.
The moisture-proof bag must be placed in an environment where the temperature is below 40°C and the relative humidity is lower than 90%.
The shelf life of a dry-packaged product is 12 months from the date when the product is packaged and sealed.
There is a humidity indicator card (HIC) in the packaging bag.
Set oven temperatures according to the following temperature curve of reflow soldering. The peak temperature is 245°C.
A: Temperature axis
B: Time axis
C: Liquidus temperature: 217 to 220°C
D: Ramp-up slope: 1 to 3°C/s
E: Duration of constant temperature: 60 to 120s; the range of constant temperature: 150 to 200°C
F: Duration above the liquidus: 50 to 70s
G: Peak temperature: 235 to 245°C
H: Ramp-down slope: 1 to 4°C/s
Note: The above curve is just an example of the solder paste SAC305. For more details about other solder pastes, please refer to Recommended oven temperature curve in the solder paste specifications.
Note: The unit is mm.
Revision | Update | Reviser | Time |
---|---|---|---|
V1.0.0 | First release | *** | June 21, 2021 |
V1.0.1 | 1. Updated some definitions on IO. 2. Added some descriptions. 3. Added the production instructions | *** | Oct 13th, 2021 |
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