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. |
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| 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.
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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 |
|---|