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Introduction

AI7931LD 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 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_IN, IR input, UART, AUXADC, PWM, and GPIOs.


Block diagram
                              


Key-feature

。Dimension (mm)/Package:32 x 32 x 2.7(Typ.) / LGA type module with shielding cover
。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 : I-PEX connector on module

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 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 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.

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

AI7931LD

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

For whole Pin map definition, please check with sales@acsip.com.tw for full support.

PIN no. Pin Name PIN no. Pin Name PIN no. Pin Name
A1 NC B8 GPIO_T_7 (= KPROW_1) F14 GPIO_T_8 (=GPIO_B_1)
A2 NC B9 NC F15 NC
A3 NC B10 GND G1 NC
A4 NC B11 BASE_3V3_L G2 GPIO_T_3
A5 NC B12 BASE_3V3_L G14 GND
A6 GND B13 GND G15 GND
A7 NC B14 GND H1 GND
A8 GPIO_T_9 (= KPCOL_0) B15 GND H2 GPIO_T_1
A9 GND C1 GND H14 GND
A10 GND C2 NC H15 NC
A11 GND C14 GND J1 AU_VIN0_P
A12 NC C15 NC J2 GND
A13 GND D1 NC J14 GND
A14 GND D2 NC J15 NC
A15 GND D14 GND K1 AU0_VIN0_N
B1 NC D15 NC K2 NC
B2 NC E1 AU_AMP_VOLP K14 IC_VCCIO
B3 NC E2 NC K15 GND
B4 NC E14 GPOP_T_6 (= GPIO_B_3) L1 AU0_VIN1_N
B5 BASE_3V3_R E15 GND L2 NC
B6 NC F1 AU_AMP_VORP L14 GND
B7 NC F2 NC L15 SDIO_CMD

Recommand Reflow Profile


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 of Wi-Fi6/BT5 RF feature evaluation. The development board uses AI7931LD 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 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-AI7931LD 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-AI7931LD 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 product relevant Commands Set Reference document.

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
Product Brief AI7931LD_Brief_Ver.02.pdf Free
Product Brief (CN) AI7931LD_Brief(CN)_Ver.01.pdf Free
Product Spec. (Datasheet) AI7931LD_SPEC_Ver.B.pdf LoginContact Us
EVK User Guide EK-AI7931LD User Guide Ver.A.pdf Free
Application Note AI7931LD_Application Note_Ver.A.pdf LoginContact Us
Item Description Download Link
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