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Introduction

AI7931HD is a highly integrated IoT module that features an ARM® Cortex-M33 application processor, a low power 1x1 802.11a/b/g/n/ax dual-band Wi-Fi subsystem, a Bluetooth v5.0 subsystem and a Power Management Unit (PMU).

The Wi-Fi subsystem and a Bluetooth v5.0 subsystem offer feature-rich wireless connectivity at high standards, and deliver reliable, cost-effective throughput from an extended distance.

The AI7931HD 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 AI7931HD 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_IN, IR input, UART, AUXADC, PWM, and GPIOs.


Block diagram
                              


Key-feature

。Dimension (mm)/Package:34 x 30 x 2.7(Typ.) / LGA-47pin
。ARM Cortex-M33 MCU with FPU with up to 300MHz clock speed
。Embedded 1MB SRAM / 4MB pSRAM / 16MB external Flash with XIP and on-the-fly AES
。IEEE 802.11 1T1R a/b/g/n/ac/ax dual-band Wi-Fi subsystem
。Bluetooth 5.0 2M_PHY / Long Range / Advertising Extension / SAM / CS#2
。Bluetooth 4.2 Link Layer Privacy / LE Secure Connection / LE Data Packet Len Extension
。Bluetooth 4.0 BLE only mode and Up to 8 BLE link
。Hardware crypto engines including AES, DES/3DES, SHA, ECC, TRNG for network security
。Wi-Fi security WFA WPA/WPA2/WPA3 personal,WPS2.0
。Supports up to 22 GPIOs multiplexed for SDIO, SPI Master, UART, I2C, ADC and PWM
。One I2S interface multiplexed with GPIO
Integrated balun, LNA, PA, and T/R switch
Operation Temperature: Operating : 0℃ ~ +60℃
。Antenna Switch connector : MM8030-2610, MURATA

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.

AI7931HD 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 v5.0 subsystem and a Power Management Unit (PMU).

The Wi-Fi subsystem and a Bluetooth v5.0 subsystem offer feature-rich wireless connectivity at high standards, and deliver reliable, cost-effective throughput from an extended distance.

The AI7931HD 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 AI7931HD 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.

Part Number Core Flash / Memory Wi-Fi / BLE HW Crypto Peripherals

AI7931HD

ARM Cortex-M33 

300 Mhz

16 MB /  

SRAM 1MB /

pSRAM 4MB

1T1R 802.11a/b/g/n/ac/ax   

BT 5.0

AES, DES/3DES,

SHA, ECC, TRNG

GPIO, SDIO, SPI, I2C,

UART, ADC, I2S, IR, PWM


RF Characteristics (RF Characteristics for 802.11ax MCS8)

802.11ax_HT20 Transmit (Conductive)

Item Condition Min. Typ. Max. Unit
Frequeny range   Channel 1   Channel 13  
Tx Power Level OFDM 13.5 15.5 17.5 dBm
Frequency Tolerance   -15 0 15 ppm
Modulation Accuracy All Data Rate   -33   dB

802.11ax_HT20 Receiver (Conductive)

Item Condition Min. Typ. Max. Unit
Frequency Range   Channel 1   Channel 13  
Min. Input 54Mbps PER<10% -69.5 -67.5 -65.5 dBm

 


Pin Information

The module will conform to the following pin map

PIN no. Pin Name PIN no. Pin Name PIN no. Pin Name
1 GND 17 GPIO_B_4/I2SIN_MCK 33 GND
2 GND 18 GND 34 AUDIO0_IN_N
3 3V3_RF 19 GPIO_B_5/AUXADC 35 AUDIO0_IN_P
4 GND 20 GPIO_B_6/IR_IN 36 GND
5 SDIO_DATA1/SPIM0_MOSI 21 GPIO_B_7/I2SIN_LRCK 37 AUDIO_OUT_L
6 SDIO_DATA0/SPIM0_MISO 22 GPIO_B_8/I2SIN_BCK 38 GND
7 SDIO_CLK/SPIM0_SCK 23 GPIO_B_9/AUXADC 39 AUDIO_OUT_R
8 SDIO_CMD/SPIM0_CS_N 24 GPIO_B_10/AUXADC 40 GND
9 SDIO_DATA3/GPIO 25 GPIO_B_11/I2C0_SDA 41 GPIO_T_1/UART1_RX
10 SDIO_DATA2/I2SIN_DAT0 26 GPIO_B_12/I2C0_SCL 42 GPIO_T_3/UART1_TX
11 RESET 27 3V3_BB 43 KPROW_1/CM33_UART_RX/PWM_3
12 VCCIO 28 GND 44 KPCOL_0/CM33_UART_TX/PWM_5
13 GPIO_B_0 29 MIC_BIAS_OUT 45 3V3_FLASH
14 1V8_OUT 30 GND 46 GND
15 GPIO_B_2 31 AUDIO1_IN_N 47 GND
16 GPIO_B_3 32 AUDIO1_IN_P    

Recommand Reflow Profile


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

General Description

        

The EK-AI7931HD board provides an affordable way for user to try out WiFi Node in IoT applications or new concepts of Wi-Fi6/BT5 RF feature evaluation. The development board uses AI7931HD 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 AI7931HD 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 app to access cloud services through internet and real-time control multi-tasks for various applications included function purposes.


Package Information

Item Count Description
EK-AI7931HD 1 Micro USB for Power source and RS232 I/F
Antenna (option) 1 2.4G / 5G for WiFi 802.11 a/b/g/n/ac/ax & Bluetooth 5.0

SW & Tools

User can configure RS232 terminal tool to control EK-AI7931HD board for SW validation and application development.

   

User can use common terminal software to control this module by default firmware with commands set which referred to MT793xCommandsSetReference_xxx_vxx.pdf.

Layout Definition

For detail setup and operation info, user can refer to user guide document for further description.


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

Item Description Download Link
EVK User Guide EK-AI7931HD User Guide Ver.A.pdf LoginContact Us
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