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Introduction

AI7931LD is a highly integrated IoT module that features an ARM® Cortex-M33 application processor, a low power 1T1R IEEE 802.11 a/b/g/n/ax dual-band Wi-Fi subsystem, a Bluetooth Low Energy v5.0 subsystem, a audio DSP for VAD feature supported AMIC, DMIC and a Power Management Unit (PMU).

The Wi-Fi and Bluetooth LE subsystem offer feature-rich wireless connectivity at high standards, and deliver reliable, cost-effective throughput from an extended distance.

The AI7931LD is designed to support standard based features in the areas of security, quality of service and international regulations, giving end users the greatest performance any time and in any circumstance.

The AI7931LD is based on ARM® Cortex-M33 with floating point microcontroller (MCU) including SRAM/ROM memory. The module also supports rich peripheral interfaces, including SDIO, SPI master only, I2C, I2S_IN, IR input, UART, AUXADC, PWM, and GPIOs.


Feature diagram
                              


Rich Features

 Main Platform-CM33  Connectivity Standards Alliance-CSA
• FreeRTOS V10 • Matter protocol for IoT industry
• Power Mode: Deep sleep, Suspend, Active   
• FOTA: Firmware Over-The-Air  
• FatFS-USB/SD card/LittleFS-XIP Flash  
USB Audio/Video Classic  
• Security: Security Boot, Trusted Firmware-M, HW crypto engine & TRNG, Anti-rollback, Secure test & debug  
 Wireless Connectivity-WiFi 6/BT 5.2  
802.11 b/g/n/ac/ax station mode (STA)  
802.11 b/g/n/ac SoftAP   
Personal Security: Open, WEP-Open, WPA, WPA2-STA/SoftAP and WPA3 - STA only  
STA-OFDMA DL/UL  
STA-11ax power saving of TWT and deep sleep mode  
STA-WoW  
Networking-IP, SNTP, SSL/TLS, HTTP(S), MQTT(S)   
• BLE Mesh  
• Wi-Fi/BT Coexistence  

The IoT module of AI793X with WiFi6 / BLE5 that can support Matter 1.0 now.


  Developing Resource   Application Reference
⇒    WiFi Matter
⇒    Audio data playback
⇒  Reference design of schematic    
⇒  Product footprint    
⇒     
⇒  Test report of throughput    
⇒  Product SDK with user guide    
 

Related Products

AI7931LD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0

AI7933CLD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0 + HiFi4 DSP

EK-AI7931LD KIT

WiFi6 2.4/5G + BT 5

EK-AI7933CLD KIT

WiFi6 2.4/5G + BT 5 + HiFi4 DSP


Teachnical Engine with Acsip Design Core

Mediatek Genio 130

 

 

Arm Cortex-M33 with FPU @ 300MHz
Embedded 1MB SRAM + 8MB USH SRAM for applications 
Wi-Fi 1x1 5GHz and 2.4GHz
Bluetooth 5.2
USB2.0, SDIO, SPI master, SPI slave, I2C I2S, IR input, UART, AUXADC, PWm
 

For more information, or for sales inquiries, please contact Acsip Technology Corp. 

 


General Description

AcSiP Technology Corp. introduces a low-cost and low-power consumption IoT module. This stand-alone module is designed for internet of things (IoT) devices with smart connection and cloud application/services.

AI7931LD is a highly integrated IoT module that features an ARM® Cortex-M33 application processor, a low power 1x1 802.11a/b/g/n/ac/ax dual-band Wi-Fi subsystem, a Bluetooth subsystem and a Power Management Unit (PMU).

The Wi-Fi subsystem and a Bluetooth subsystem offer feature-rich wireless connectivity at high standards, and deliver reliable, cost-effective throughput from an extended distance.

The AI7931LD is designed to support standard based features in the areas of security, quality of service and international regulations, giving end users the greatest performance any time and in any circumstance.

The AI7931LD is based on ARM® Cortex-M33 with floating point microcontroller (MCU) including SRAM/ROM memory. The module also supports rich peripheral interfaces, including SDIO, SPI master, I2C, I2S, IR input, UART, AUXADC, PWM, and GPIOs.


Block Diagram

                              

Part Number Core Flash / Memory Wi-Fi / BLE HW Crypto Peripherals
AI7931LD ARM Cortex-M33 16MB 1T1R 802.11a/b/g/n/ac/ax AES, DES/3DES, GPIO, SDIO, SPI, I2C
300 Mhz SRAM 1MB BT 5.0 SHA, ECC, TRNG UART, ADC, I2S, IR, PWM
  pSRAM 4MB      

Certification

FCC ID 2ADWC-AI7931CLD
   
CE EN300328 / EN301893 / EN300440 / EN301489-1-17 / EN62311 / EN62368-1

Option Voltage Range

Symbol Parameter Min. Typ. Max. Unit input / Output
BASE_3V3 3.3V Supply Voltage 2.97 3.3 3.63 V I
VCCIO_L Internal Flash Supply 2.97 3.3 3.63 V I
Voltage & SDIO Domain
IC_VCCIO GPIO Domain 1.62 1.8 1.98 V I
2.97 3.3 3.63
PHYLDO_OUT 1.8V Output 1.62 1.8 1.98 V I
MIC_MICBIAS0 MICBIAS Output 1.8 1.85 2.2 V I

RF Power Consumption

Wi-Fi

Description Current (Average)
AI7931LD Unit
2.4GHz-Band Receiver 38 mA
2.4GHz-Band Transmit 802.11b 11M@21dBm 313 mA
2.4GHz-Band Transmit 802.11g 54M@17dBm 180 mA
2.4GHz-Band Transmit 802.11n MCS7@17dBm 178 mA
2.4GHz-Band Transmit 802.11ax MCS8@16dBm 168 mA
5GHz-Band Receiver 44 mA
5GHz-Band Transmit 802.11a 54M@17dBm 292 mA
5GHz-Band Transmit 802.11n MCS7@17dBm 296 mA
5GHz-Band Transmit 802.11ax MCS8@16dBm 274 mA

Bluetooth

Description Current (Average)
AI7931LD Unit
Bluetooth Receiver 24 mA
Bluetooth Tx Power LE Mode-1Mbps@9dBm 60 mA
Bluetooth Tx Power LE Mode-2Mbps@9dBm 48 mA
Bluetooth Tx Power LE Mode-500kbps@9dBm 65 mA
Bluetooth Tx Power LE Mode-125kbps@9dBm 68 mA
BLE Advertising 15 mA
120ms / 120ms (Min./ Max. Interval)
BLE Full Scan 24 mA
Interval : 200ms
BLE Connection 15 mA
Interval : 7.5ms

Mechanical Dimensions

For further information of those items listed behind within datasheet

Please check with Datasheet for downloading or mail to sales@acsip.com.tw for full technical support.

♦ RF Characteristics
♦ Pin definition
♦ Power Mode
♦ Recommended Reflow Profile
♦ Module Preparation
♦ Package Information


Related Resource

► Datasheet

 EVK User Guide

► Genio IoT RTOS SDK


Related Products

AI7931LD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0

AI7933CLD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0 + HiFi4 DSP

EK-AI7931LD KIT

WiFi6 2.4/5G + BT 5

EK-AI7933CLD KIT

WiFi6 2.4/5G + BT 5 + HiFi4 DSP


Teachnical Engine with Acsip Design Core

Mediatek Genio 130

 

 

Arm Cortex-M33 with FPU @ 300MHz
Embedded 1MB SRAM + 8MB USH SRAM for applications 
Wi-Fi 1x1 5GHz and 2.4GHz
Bluetooth 5.2
USB2.0, SDIO, SPI master, SPI slave, I2C I2S, IR input, UART, AUXADC, PWm
 

For more information, or for sales inquiries, please contact Acsip Technology Corp. 


General Description

The EK-AI7931LD board provides an affordable way for user to try out WiFi Node in IoT applications or new concepts evaluation of Wi-Fi6/BT5 RF feature.

The development board uses AI7933CLD as a standalone development platform of RTOS to implement smart building, home surveillance, industry 4.0 and so on IoT projects.

It is based on AI7931LD module, Mediatek Filogic IoT solution, embedded ARM Cortex-M33 with FPU in package.

The HDK enable rich peripherals, cutting edge connectivity and security features, user can develop the application of Matter to access local devices CSA approved through Wi-Fi network and real-time control from controller’s panel of boarder router or mobile App to enjoy smart, security technical service.


Top view of EK-AI7931LD

                  


How to Start

                        

User could follow up above steps to know more about AI7931LD development resource through EK-AI7931LD with SDK to test all examples within SW package or implement your application and prove its functions by SDK building, image downloaded to HDK for behavers, scenario verify for sure. 

Read manual & get HDK for essential preparation:

  • EK-AI7931LD_User Guide
  • EK-AI7931LD

Power on & getting Log of default image downloaded into AI7931LD

  1. Driver package install and drivers info check
  2. Configuring RS232 terminal tool for log message showed on tool since power on
  3. Power source choose for EK-AI7931LD board by Con8 (Micro USB) or J1

        

Build Example & Developing Application - Developing your App by HDK & SDK

  • SDK download and build environment setup
  • Examples evaluate and image download
  • User could use common terminal software to control this module by default firmware with commands set which referred to product relevant Commands Set Reference document.

Related Resource

 AI7931LD

► Genio IoT RTOS SDK

► Product Datasheet


Related Products

AI7931LD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0

AI7933CLD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0 + HiFi4 DSP

EK-AI7931LD KIT

WiFi6 2.4/5G + BT 5

EK-AI7933CLD KIT

WiFi6 2.4/5G + BT 5 + HiFi4 DSP


Mediatek has been Co-developing with Acsip

                    


For more information, or for sales inquiries, please contact Acsip Technology Corp. 

Item Description Download Link
Genio IoT RTOS SDK AcSip_MT793x_non-NDA_SDK_V3.1.0_230519.tar.gz LoginContact Us
Product Brief AI7931LD_Brief_Ver.05.pdf Free
Product Brief (CN) AI7931LD_Brief(CN)_Ver.04.pdf Free
Product Spec. (Datasheet) AI7931LD_SPEC_Ver.H.pdf LoginContact Us
EVK User Guide EK-AI7931LD User Guide Ver.E.pdf Free
Application Note AI7931LD_Application Note_Ver.C.pdf LoginContact Us
Item Description Download Link
AI7931LD_CE_Certificate AI7931LD_CE_Certificate.7z LoginContact Us
AI7931LD_FCC_Grant AI7931LD_FCC_Grant.7z LoginContact Us
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