Contents
Ai-Thinker Ai-M61-32S Bluetooth Combo Module
Product Information
Ai-M61-32S-Kit Specification V1.1.0
- Ai-M61-32S-Kit is a development board designed for Ai-M61-32S modules. Ai-M61-32S is a Wi-Fi 6 + BLE5.3 module developed by Shenzhen Ai-Thinker Technology Co., Ltd. The module is equipped with a BL618 chip as the core processor, supports Wi-Fi 802.11b/g/n/ax protocol and BLE protocol, and supports Thread protocol. The BL618 system includes a low-power 32-bit RISC-V CPU with a floating-point unit, DSP unit, cache, and memory, with a maximum dominant frequency of 320M.
- The Ai-M61-32S module has rich peripheral interfaces, including DVP, MJPEG, Display, Audio Codec, USB2.0, SDU, Ethernet (EMAC), SD/MMC(SDH), SPI, UART, I2C, I2S, PWM, GPDAC, GPADC, ACOMP, GPIO, etc. It can be widely used in audio and video multimedia, the Internet of Things (IoT), mobile devices, wearable electronic devices, smart homes, and other fields.
- The Ai-M61-32S module Sec Eng module supports AES/SHA/PKA/TRNG and other functions, supports image encryption and signature startup, and meets various security application requirements in the Internet of Things field Main chip architecture diagram.
Characteristics
- DIP-42 package
- Supports 2.4GHz operating frequency band
- Supports IEEE 802.11 B/g/n/ax
- Supports BLE5.3
- Supports Thread
- Supports Wi-Fi/BLE/Thread coexistence
- Wi-Fi security support WPS/WEP/WPA/WPA2/WPA3
- Supports 20/40MHz bandwidth, 1T1R, maximum rate 229.4 Mbps
- Supports STA, SoftAP, STA + SoftAP, and sniffer modes
- 32-bit RISC-V CPU with FPU and DSP, with a maximum dominant
frequency of 320M - 4MB pSRAM,532KB SRAM,128KB ROM,4Kb eFuse
- Supports DVP, MJPEG, Display, Audio Codec, USB2.0, SDU,
Ethernet (EMAC), environments
Product Usage Instructions
To use the Ai-M61-32S-Kit, follow these steps:
- Ensure the Ai-M61-32S module is properly inserted into the development board.
- Connect the necessary peripherals to the module’s peripheral interfaces (e.g., DVP, MJPEG, Display, Audio Codec, USB2.0, SDU, Ethernet (EMAC), etc.) as required for your application.
- Provide power supply to the Ai-M61-32S-Kit within the specified power supply range.
- If using UART communication, set the desired UART rate to establish communication with the module.
- Follow the programming guidelines and specifications provided by Shenzhen Ai-Thinker Technology Co., Ltd. to develop your application using the Ai-M61-32S-Kit.
Document resume
| Version | Date | Develop/revise content | Edition | Approve |
| V1.1.0 | 2023.3.23 | First formulated | Huang Fang | Hong Xu |
Product Overview
- Ai-M61-32S-Kit is a development board designed for Ai-M61-32S modules. Ai-M61-32S is a Wi-Fi 6 + BLE5.3 module developed by Shenzhen Ai-Thinker Technology Co., Ltd. The module is equipped with a BL618 chip as the core processor, supports Wi-Fi 802.11b/g/n/ax protocol and BLE protocol, and supports Thread protocol. The BL618 system includes a
low-power 32-bit RISC-V CPU with floating-point unit, DSP unit, cache and memory, with a maximum dominant frequency of 320M. - The Ai-M61-32S module has rich peripheral interfaces, including DVP, MJPEG, Dispaly, Audio Codec, USB2.0, SDU, Ethernet (EMAC), SD/MMC(SDH), SPI, UART, I2C, I2S, PWM, GPDAC, GPADC, ACOMP, GPIO, etc. It can be widely used in audio and video multimedia, the Internet of Things (IoT), mobile devices, wearable electronic devices, smart homes, and other fields.
- The Ai-M61-32S module Sec Eng module supports AES/SHA/PKA/TRNG and other functions, supports image encryption and signature startup, and meets various security application requirements in the Internet of Things field.
Characteristics
- DIP-42 package
- Supports 2.4GHz operating frequency band
- Support IEEE 802.11 B/g/n/ax
- Support BLE5.3
- Support Thread
- Support Wi-Fi/BLE/Thread coexistence
- Wi-Fi security support WPS/WEP/WPA/WPA2/WPA3
- Supports 20/40MHz bandwidth, 1T1R, maximum rate 229.4 Mbps
- Support STA, SoftAP, STA + SoftAP and sniffer modes
- 32-bit RISC-V CPU with FPU and DSP, with a maximum dominant frequency of 320M
- 4MB pSRAM,532KB SRAM,128KB ROM,4Kb eFuse
- Supports DVP, MJPEG, Dispaly, Audio Codec, USB2.0, SDU, Ethernet (EMAC), SD/MMC(SDH), SPI, UART, I2C, I2S, PWM, GPDAC, GPADC, ACOMP, GPIO, etc.
- Support Camera Sensor DVP interface
- Support Video Codec MJPEG encoding
- Support LCD display (QSPI,DBI and RGB)
- Integrated RF Balun, PA/LNA
- Support for safe startup and safe debugging
- Support XIP QSPI On-The-Fly AES decryption (OTFAD)
- Support TrustZone
- Support AES-CBC/CCM/GCM/XTS mode
- Support MD5, SHA-1/224/256/384/512
- TRNG (True Random Number Generator) is supported
- Support PKA (Public Key Accelerator) for RSA/ECC
- BLE-enabled Wi-Fi fast connection
- Universal AT command can be used quickly.
- Supports secondary development and integrates Windows and Linux development environments
Main parameters
Table 1 Description of Main Parameters
| Model | Ai-M61-32S-Kit |
| Package | DIP-42 |
| Size | 59.83*25.4(±0.2)mm |
| Antenna | Onboard antenna |
| Frequency | 2400~2483.5MHz |
| Operating temperature | -40 ℃ ~ 85 ℃ |
| Storage
temperature |
-40℃~125℃,<90%RH |
| Power supply | The power supply voltage is 3.3V or 5V, and the power supply current is ≥ 500mA |
|
Interface |
Supports DVP, MJPEG, Dispaly, Audio Codec, USB2.0, SDU, Ethernet
(EMAC), SD/MMC(SDH), SPI, UART, I2C, I2S, PWM, GPDAC, GPADC, ACOMP, GPIO, etc |
| IO | 26 |
| UART rate | Default 115200 bps |
| Security | WPS/WEP/WPA/WPA2/WPA3 |
| Flash | 8MByte |
Power selection
The Ai-M61-32S-Kit supports three power supply modes:
- Type-C Interface Power Supply (Recommended)
- 5V and GND pin power supply
- 3V3 and GND Pin Power Supply
Electrostatic requirements
- Ai-M61-32S-Kit are electrostatic sensitive equipment, special precautions need to be taken when handling it.
Electrical characteristics
Table 2 Table of Electrical Characteristics
| Parameters | Conditi | Min. | Typical value | Max. | Unit | |
| Interface power supply | VDD | 4.5 | 5 | 5.3 | V | |
| Supply voltage (pin) | VDD | 2.97 | 3.3 | 3.6 | V | |
|
I /O |
VIL | – | – | – | 0.3*VDDIO | V |
| VIH | – | 0.7*VDDIO | – | – | V | |
| VOL | – | – | 0.1*VDDIO | – | V | |
| VOH | – | – | 0.9*VDDIO | – | V | |
| IMAX | – | – | – | 15 | mA | |
Wi-Fi radio frequency performance
Table 3 Wi-Fi RF Performance Table
| Description | Typical value | Unit | ||
| Spectrum range | 2400~2483.5MHz | MHz | ||
| Output power | ||||
| Mode | Min. | Typical | Max. | Unit |
| 11ax mode HE40,PA output power | – | 16 | – | dBm |
| 11ax mode HE20,PA output power | – | 17 | – | dBm |
| 11n mode HT40,PA output power | – | 19 | – | dBm |
| 11n mode HT20,PA output power | – | 19 | – | dBm |
| In 11g mode, PA output power | – | 19 | – | dBm |
| In 11b mode, PA output power | – | 22 | – | dBm |
| Receiving sensitivity | ||||
| Mode | Min. | Typical | Max. | Unit |
| 11b,1 Mbps | – | -98 | – | dBm |
| 11b,11 Mbps | – | -90 | – | dBm |
| 11g,6 Mbps | – | -93 | – | dBm |
| 11g,54 Mbps | – | -76 | – | dBm |
| 11n,HT20(MCS7) | – | -73 | – | dBm |
| 11ax,HE20(MCS9) | – | -70 | – | dBm |
| 11ax,HE40(MCS9) | – | -67 | – | dBm |
BLE RF performance
Table 4 BLE RF Performance Table
| Description | Typical value | Unit | |||
| Spectrum range | 2400-2483.5 | MHz | |||
| Output power | |||||
| Mode | Min. | Typical value | Max. | Unit | |
| 1Mbps | – | 10 | 15 | dBm | |
| 2Mbps | – | 10 | 15 | dBm | |
| Receiving sensitivity | |||||
| Mode | Min. | Typical value | Max. | Unit | |
| 1Mbps sensitivity @ 30.8%PER | – | -99 | – | dBm | |
| 2Mbps sensitivity @ 30.8%PER | – | -97 | – | dBm | |
Power consumption
- The POUT power for all transmit modes is the measured value at the antenna interface.
- All transmission data are measured in the continuous transmission mode based on a duty cycle of 100%.
Table 5 Power consumption table
| Mode | Min. | Average | Max. | Unit |
| Transmit 802.11B, 11Mbps,POUT = + 22dBm | – | 374 | – | mA |
| Transmit 802.11g,54Mbps,POUT = + 19dBm | – | 331 | – | mA |
| Emission 802.11n,MCS7,POUT = + 19dBm | – | 328 | – | mA |
| Launch 802.11ax,MCS7,POUT = + 19dBm | – | 293 | – | mA |
| Receive 802.11B, packet length 1024 bytes | – | 64 | – | mA |
| Receive 802.11g, packet length 1024 bytes | – | 64 | – | mA |
| Receive 802.11n, packet length 1024 bytes | – | 64 | – | mA |
| Receive 802.11ax, packet length 1024 bytes | – | 64 | – | mA |
Appearance size
Figure 3 Appearance diagram (Rendering figure is for reference only, subject to physical objects)
Indicator and key instructions
Table 6 Ai-M61-32S-Kit Indicator and Key Position
| ① | RGB lamp (red lamp is connected to IO12, green lamp is connected to IO14, blue lamp is connected to IO15, high level is valid) |
| ② | Reset button |
| ③ | Burn button, burn firmware is to first press the burn button and then short press the reset button |
Pin definition
A total of 42 interfaces were connected to the Ai-M61-32S-Kit, as shown in the pin diagram, the pin function definition table is an interface definition.
Table 7 Pin Function Definition Table
| Foot | Name | Functional description |
| 1 | 3V3 | 3.3V power supply; The output current of external power supply is recommended to be above 500mA. |
| 2 | EN | Default as chip enable, high level valid |
| 3 | IO0 | GPIO0/SPI_SS/I2S_BCLK/I2C_SCL/PWM0/ADC_CH9 |
| 4 | IO12 | GPIO12/SPI_SS/SDH_CLK/SF3_D0/I2S_BCLK/I2C_SCL/PWM0/ADC
_CH6 |
| 5 | IO14 | GPIO14/SPI_MOSI/SPI_MISO/SDH_DAT3/SF3_D1/I2S_DI/I2S_RCL K_O/I2C_SCL/PWM0/ADC_CH4 |
| 6 | IO15 | GPIO15/SPI_MOSI/SDH_DAT2/SF3_CS/I2S_DO/I2S_RCLK_O/I2C_S DA/PWM0 |
| 7 | IO1 | GPIO1/SPI_SCLK/I2S_FS/I2C_SDA/PWM0/ADC_CH8 |
|
8 |
IO16 | Available by default, the IO port is shared with the PIN pin of the 32.768KHz crystal oscillator input inside the module. If the module of the internal patch 32.768KHz crystal oscillator is customized, the IO is in NC state. GPIO16/SPI_SS/I2S_BCLK/I2C_SCL/XTAL_32K_IN/PWM0 |
|
9 |
IO17 | Available by default, the IO port is shared with the 32.768KHz crystal output PIN pin inside the module. If the module of the internal patch 32.768KHz crystal oscillator is customized, the IO is in NC state.
GPIO17/SPI_SCLK/I2S_FS/I2C_SDA/XTAL_32K_OUT/PWM0 |
| 10 | IO18 | GPIO18/SPI_MISO/I2S_DI/I2S_RCLK_O/I2C_SCL/PWM0 |
| 11 | IO19 | GPIO19/SPI_MOSI/I2S_DO/I2S_RCLK_O/I2C_SDA/PWM0/ADC_CH |
| 12 | IO10 | GPIO10/SPI_MISO/SDH_DAT1/SF2_D3/I2S_DI/I2S_RCLK_O/I2C_S CLPWM0/ADC_CH7 |
| 13 | IO13 | GPIO13/SPI_SCLK/SDH_CMD/SF3_D2/I2S_FS/I2C_SDA/PWM0/AD C_CH5 |
| 14 | IO11 | GPIO11/SPI_MOSI/SDH_DAT0/SF3_CLK/I2S_DO/I2S_RCLK_O/I2C_ SDA/PWM0 |
| 15 | IO3/NC | Default NC, not available. For use, please contact Ai-Thinker. GPIO3/SPI_MOSI/I2S_DO/I2S_RCLK_O/I2C_SDA/PWM0/ADC_CH3 |
| 16 | IO20 | GPIO20/SPI_SS/I2S_BCLK/I2C_SCL/PWM0/ADC_CH0 |
| 17 | IO4/NC | Default NC, not available. The IO port is shared with the module Flash pin and cannot be used in the external FLASH state. |
| 18 | IO5/NC | Default NC, not available. The IO port is shared with the module Flash pin and cannot be used in the external FLASH state. |
|
19 |
IO34/NC |
Default NC, not available. For use, please contact Ai-Thinker. GPIO34/SPI_MISO/I2S_DI/I2S_RCLK_O/I2C_SCL/PWM0 |
| 20 | 5V | 5V power supply; The output current of external power supply is recommended to be above 500mA. |
| 21 | GND | Grounding |
| 22 | GND | Grounding |
| 23 | IO33 | GPIO33/SPI_SCLK/I2S_FS/I2C_SDA/PWM0 |
| 24 | IO32 | GPIO32/SPI_SS/I2S_BCLK/I2C_SCL/PWM0 |
| 25 | TX | TXD/GPIO21/SPI_SCLK/I2S_FS/I2C_SDA/PWM0 |
| 26 | RX | RXD/GPIO22/SPI_MOSI/SPI_MISO/I2S_DI/I2S_RCLK_O/I2C_SCL/P WM0 |
| 27 | IO31 | GPIO31/SPI_MOSI/I2S_DO/I2S_RCLK_O/I2C_SDA/PWM0 |
| 28 | IO30 | GPIO30/SPI_MISO/I2S_DI/I2S_RCLK_O/I2C_SCL/PWM0 |
| 29 | IO25 | GPIO25/SPI_SCLK/I2S_FS/I2C_SDA/PWM0 |
| 30 | IO27 | GPIO27/SPI_MOSI/I2S_DO/I2S_RCLK_O/I2C_SDA/PWM0/ADC_CH 10 |
| 31 | IO29 | GPIO29/SPI_SCLK/I2S_FS/I2C_SDA/PWM0 |
| 32 | IO26 | GPIO26/SPI_MISO/I2S_DI/I2S_RCLK_O/I2C_SCL/PWM0 |
| 33 | IO28 | GPIO28/SPI_SS/I2S_BCLK/I2C_SCL/PWM0/ADC_CH11 |
| 34 | IO24 | GPIO24/SPI_SS/I2S_BCLK/I2C_SCL/PWM0 |
| 35 | IO2/NC | Default NC, not available. For use, please contact Anxin. GPIO2/SPI_MISO/I2S_DI/I2S_RCLK_O/I2C_SCL/PWM0/ADC_CH2 |
| 36 | IO23 | GPIO23/SPI_MOSI/I2S_DO/I2S_RCLK_O/I2C_SDA/PWM0 |
| 37 | USB_DM | USB_DM |
| 38 | USB_DP | USB_DP |
| 39 | IO9/NC | Default NC, not available. The IO port is shared with the module Flash pin and cannot be used in the external FLASH state. |
| 40 | IO8/NC | Default NC, not available. The IO port is shared with the module Flash pin and cannot be used in the external FLASH state. |
| 41 | IO7/NC | Default NC, not available. The IO port is shared with the module Flash pin and cannot be used in the external FLASH state. |
| 42 | IO6/NC | Default NC, not available. The IO port is shared with the module Flash pin and cannot be used in the external FLASH state. |
Schematic diagram
Product packaging information
Table 8 Packing Information Table
| Packing list | Packaging method | Quantity per pack | Quantity per pack (Sealed Bag) |
| Ai-M61-32S-Kit | Foam + Electrostatic Bag | 1pcs | 20pcs |
Contact us
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- Company Address: Room 403,408-410, Block C, Huafeng Smart Innovation Port, Gushu 2nd Road, Xixiang, Baoan District, Shenzhen.
Tel: +86-0755-29162996
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