Ai-Thinker Ai-M61-32S Bluetooth Combo Module Instruction Manual

: June 12, 2024
: Ai-Thinker

Table of Contents

Ai-Thinker Ai-M61-32S Bluetooth Combo Module
Product Information
Product Usage Instructions
Product Overview
Main parameters
Appearance size
Indicator and key instructions
Pin definition
Schematic diagram
Product packaging information
Contact us
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

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| –| –| –| 0.3VDDIO| V
VIH| –| 0.7VDDIO| –| –| V
VOL| –| –| 0.1VDDIO| –| V
VOH| –| –| 0.9VDDIO| –| 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

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

Ai-Thinker official website Office forum LinkedIn Tmall shop Taobao shop Technical support email support@aithinker.com Domestic business cooperation sales@aithinker.com Overseas business cooperation overseas@aithinker.com
Develop DOCS Alibaba shop
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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The test data obtained in the article are all obtained from Ai-Thinker’s laboratory tests,and the actual results may vary slightly.
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The final interpretation right belongs to Shenzhen Ai-Thinker Technology Co.,Ltd.

Notice

Due to product version upgrades or other reasons,the contents of this manual may be changed.
Shenzhen Ai-Thinker Technology Co.,Ltd.reserves the right to modify the contents of this manual without any notice or prompt.
This manual is only used as a guide.Shenzhen Ai-Thinker Technology Co.,Ltd. makes every effort to provide accurate information in this manual.However, Shenzhen Ai-Thinker Technology Co., Ltd. does not guarantee that the contents of the manual are completely free of errors.All statements and information in this manual And the suggestion does not constitute any express or implied guarantee.
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