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Last Updated on : 2022-08-05 08:37:08
CRG1 is a low-power embedded Wi-Fi+Bluetooth Voice module that Tuya has developed. Embedded with the Wi-Fi network protocol stack and rich library functions, it consists of a highly integrated RF chip (W701P-VA2-CG). With the maximum CPU clock rate of 100 MHz, CRG1 also contains a low-power Real-M300 (KM4) microcontroller unit (MCU), a WLAN MAC, a 1T1R WLAN, a 8-MB pseudo-static random-access memory (PSRAM), 4-MB ﬂash memory, and rich extensive peripherals.
CRG1 is an RTOS platform that integrates all function libraries of the Wi-Fi MAC and TCP/IP. You can develop embedded Wi-Fi products as required.
|Update date||Updated content||Version after update|
|2022-08-05||This is the first release.||V1.0.0|
CRG1 has 3 rows of pins with a spacing of 1.5 mm.
The CRG1 dimensions are 19±0.35 mm (W)×25.7±0.35 mm (L) ×2.9±0.15 mm (H). The thickness of the PCB is 0.8±0.1 mm. The dimensions of CRG1 are as follows:
The definition of interface pins is shown in the following table:
|Pin number||Symbol||I/O type||Function|
|1||RTS2||I/O||PA 20, which corresponds to Pin 1 and is a serial port Uart2 flow control request-to-send pin|
|2||RX2||I/O||PA 15, which corresponds to Pin 36 and Uart2_RX and is the docking serial port of a user’s MCU|
|3||PA17||I/O||PA 17, which corresponds to Pin 38, is a hardware PWM and can be configured as a GPIO|
|4||PA_EN||I/O||Audio PA enable pin and busy signal output pin of on-board voice chip WT2003HP8|
|5||Test||I/O||Test pin is reserved for production test and has no other functions.|
|6||PA0||I/O||PA0, which corresponds to Pin 15, is a hardware PWM and can be configured as a GPIO,cannot be pulled up when powered on|
|7||PA18||I/O||PA18, which corresponds to Pin 39, is a hardware PWM and can be configured as a GPIO|
|8||EN||P||Enabling pin, which works at the voltage of 3.3V and is pulled up|
|9||GND||P||Power supply reference ground|
|13||TX2||I/O||PA16, which corresponds to Pin 37 and Uart2_TX and is the docking serial port of a user’s MCU|
|14||CTS2||I/O||PA19, which corresponds to Pin 40 and is a serial port Uart2 flow control clear-to-send pin|
|15||RX||I/O||PA13, which corresponds to Pin 33 and Uart0_RX and is the docking serial port of a user’s MCU|
|16||TX||I/O||PA14, which corresponds to Pin 34 and Uart0_TX and is the docking serial port of a user’s MCU|
|17||3V3||P||Power supply pin (3.3V)|
|18||PA23||I/O||PA 23, which corresponds to Pin 3, is a hardware PWM and can be configured as a GPIO,cannot be pulled up when powered on|
|19||PA1||I/O||PA 1, which corresponds to Pin 16, is a hardware PWM and can be configured as a GPIO,cannot be pulled up when powered on|
|20||AOUTP_L||I/O||Audio output pin of on-board voice chip WT2003HP8，Pin6|
|23||Log TX||I/O||PA3, which corresponds to Pin 19 and is used to print system logs|
|24||Log Rx||I/O||PA2, which corresponds to Pin 18 and is used to print system logs|
|25||PA4||I/O||PA4, which corresponds to Pin 20, is a hardware PWM and can be configured as a GPIO|
Note: P indicates a power supply pin and I/O indicates an input/output pin.
|Parameter||Description||Minimum value||Maximum value||Unit|
|VDD||Power supply voltage||-0.3||3.6||V|
|Static electricity discharge voltage (human body model)||TAMB-25℃||-||2||KV|
|Static electricity discharge voltage (machine model)||TAMB-25℃||-||0.5||KV|
|Parameter||Description||Minimum value||Typical value||Maximum value||Unit|
|VIL||I/O low level input||-||-||0.8||V|
|VIH||I/O high level input||2.0||-||-||V|
|VOL||I/O low level output||-||-||0.4|
|VOH||I/O high level output||2.4||-||-|
|Imax||I/O drive current||-||-||16||mA|
|Cpad||Input pin capacitance||-||2||-||pF|
TX power consumption:
|Symbol||Mode||Power||Average value||Peak value (Typical value)||Unit|
|IRF||11b 11Mbps||17 dBm||222||256||mA|
|IRF||11b 11Mbps||18 dBm||237||272||mA|
|IRF||11g 54Mbps||15 dBm||155||225||mA|
|IRF||11g 54Mbps||17.5 dBm||173||259||mA|
|IRF||11n BW20 MCS7||13 dBm||143||203||mA|
|IRF||11n BW20 MCS7||16.5 dBm||165||244||mA|
RX power consumption:
|Symbol||Mode||Average value||Peak value (Typical value)||Unit|
|IRF||11N HT20 MCS7||62||69||mA|
|Working mode||Working status, TA = 25°C||Average value||Peak value (Typical value)||Unit|
|Quick network pairing state (EZ)||The module is in the fast network pairing state and the Wi-Fi indicator flashes fast||77||331||mA|
|Idle state||The module is connected to the network and the Wi-Fi indicator is always on||68||321||mA|
|Network connection operation state||The module is connected to the network and the Wi-Fi indicator is always on||67||316||mA|
|Disconnected state||The module is disconnected and the Wi-Fi indicator is dark||67||312||mA|
|Frequency range||2.400 to 2.4835 GHz|
|Wi-Fi standard||IEEE 802.11b/g/n (channels 1 to 14)|
|Bluetooth standard||Bluetooth 4.2|
|Data transmission rate||11b: 1, 2, 5.5, 11 (Mbps)|
|Data transmission rate||11g: 6, 9, 12, 18, 24, 36, 48, 54 (Mbps)|
|Data transmission rate||11n: HT20 MCS0 to 7|
|Antenna type||PCB antenna with a peak gain of 1.27 dBi|
|Parameter||Minimum value||Typical value||Maximum value||Unit|
|Average RF output power, 802.11b CCK Mode 1M||-||17.5||-||dBm|
|Average RF output power, 802.11g OFDM Mode 54M||-||14.5||-||dBm|
|Average RF output power, 802.11n OFDM Mode MCS7||-||13.5||-||dBm|
|Average RF output power, Bluetooth 4.2 1M||-||6.5||-||dBm|
|EVM@802.11b CCK 11 Mbps Mode 17.5 dBm||-||-||-10||dB|
|EVM@802.11g OFDM 54 Mbps Mode 14.5 dBm||-||-||-29||dB|
|EVM@802.11n OFDM MCS7 Mode 13.5 dBm||-||-||-30||dB|
|Parameter||Minimum value||Typical value||Maximum value||Unit|
|PER<8%, RX sensitivity, 802.11b CCK Mode 1M||-||-97||-||dBm|
|PER<10%, RX sensitivity, 802.11g OFDM Mode 54M||-||\ -75||-||dBm|
|PER<10%, RX sensitivity, 802.11n OFDM Mode MCS7||-||\ -72||-||dBm|
|PER<10%, RX sensitivity, Bluetooth 4.2 1M||-||\ -93||-||dBm|
CRG1 uses only an onboard PCB antenna with a peak gain of 1.27 dBi.
To ensure the optimal Wi-Fi performance when the Wi-Fi module uses an onboard PCB antenna, it is recommended that the antenna be at least 15 mm away from other metal parts.
The mechanical dimensions of the PCB of CRG1 are 19±0.35mm (W)×25.7±0.35mm (L) ×0.8±0.1mm (H). The following figure shows the mechanical dimensions of CRG1:
Note: The default dimensional tolerance is ±0.35 mm. If you have specific requirements on dimensions, make them clear in the module datasheet after communication.
The following figure is a schematic diagram of CRG1 which shows how pins correspond to each other:
The following is the diagram of the packaging of the PCB of CRG1:
The Tuya SMT module should be mounted by the SMT device. After being unpacked, it should be soldered within 24 hours. Otherwise, it should be put into the drying cupboard where the RH is not greater than 10%; or it needs to be packaged under vacuum again and the exposure time needs to be recorded (the total exposure time cannot exceed 168 hours).
Storage conditions for a delivered module:
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.
The module needs to be baked in the following cases:
In the whole production process, take electrostatic discharge (ESD) protective measures.
To guarantee the passing rate, it is recommended that you use the SPI and AOI to monitor the quality of solder paste printing and mounting.
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.
|Product model||MOQ (pcs)||Packing method||The number of modules per reel||The number of reels per carton|
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this device.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Note: This device has been tested and found to comply with the limits for a Class B digital device, according to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy and, if not installed and used following the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this device does cause harmful interference to radio or television reception, which can be determined by turning the device off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Radiation Exposure Statement
This device complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This device should be installed and operated with a minimum distance of 20cm between the radiator and your body.
This radio module must not be installed to co-locate and operating simultaneously with other radios in the host system except following FCC multi-transmitter product procedures. Additional testing and device authorization may be required to operate simultaneously with other radios.
The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end-user.
The host product manufacturer is responsible for compliance with any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.
The end-user manual shall include all required regulatory information/warnings as shown in this manual, including “This product must be installed and operated with a minimum distance of 20 cm between the radiator and user body”.
This device has got an FCC ID: 2ANDL-CRG1. The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-CRG1”.
This device is intended only for OEM integrators under the following conditions:
The antenna must be installed such that 20cm is maintained between the antenna and users, and the transmitter module may not be co-located with any other transmitter or antenna.
As long as the 2 conditions above are met, further transmitter tests will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed.
Declaration of Conformity European Notice
Hereby, Hangzhou Tuya Information Technology Co., Ltd declares that this module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU,2011/65/EU. A copy of the Declaration of conformity can be found at https://www.tuya.com.
This product must not be disposed of as normal household waste, in accordance with the EU directive for waste electrical and electronic equipment (WEEE-2012/19/EU). Instead, it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point.
The device could be used with a separation distance of 20cm to the human body.
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