BDE-HWF7394PN is an ultra-low power & long-range Wi-Fi module based on IEEE 802.11ah, a new Wi-Fi standard operating in the Sub 1GHz license-exempt band, offering longer range and lower power connectivity necessary for internet of things (IoT) applications.

The module can operate at frequency range from 860 MHz to 930 MHz for different countries/regions. Refer to Table 1 for different variants targeting at different counties.

With a dedicated on-board RF front-end module which consists of an PA and RF switch, the module can increase the transmission power up to 26 dBm. It outputs the accurate power for each channel through the temperature sensor integrated in the SoC and calibration at the factory. On-board serial flash can be used for user application program and OTA software update and store MAC address, calibration data and information. It also can support execution in place (XIP) feature with a 16KB internal cache memory.

Key Features 

 Standard

 Full IEEE 802.11ah compatibility with enhanced performance

 1/2/4 MHz channel bandwidth, up to 15Mbps data rate

 WPA2/WPA3/WPS support

 Support transmission of standby radio frame

 Radio Frequency

 +25 dBm transmit power

 -106 dBm minimum receive sensitivity (MCS10)

 860~930 MHz frequency band by different module variants

 Main Interface

 UART and SPI support for host interface

 Peripherals

 GPIO, AUXADC

 I2C, SPI and UART

 RF Transceiver

 Based on the industry-proven direct conversion transceiver architecture

 Includes a dedicated RF front-end module, which consists of a TX power amplifier and RF switch to control TRX

 Integrated LNA

 Integrated LDOs

 Wide supply voltage supportable with an integrated DC-DC buck converter

 Usable battery voltage range: 2.1V ~ 3.6V

 Radio calibration interfaces for digital baseband

 Internal temperature sensing and battery voltage monitoring

 Low supply current: 

 RX 16 mA @ 3.3V

 TX 530 mA @ 3.3V @ +26 dBm

 Modulation bandwidth: 1/2/4 MHz

 BUS Sub-System

 Firmware code can be stored and executed in external flash memory using XIP (execute-in-place) interface

 System Peripherals

 3 channel 32-bit timers

 1 channel 64-bit timers

 1 channel 32-bit watchdog timers

 1 channel 64-bit RTC with offset estimator

 Serial flash controller for XIP with cache (16KB cache memory)

 General Direct Memory Controller

 8 DMA channels with 2 AHB masters

 16 controls for communicating with peripherals

 Data Peripherals

 Max 20 general purpose I/Os

 1 HSPI(Host SPI) for host interface

 2 channel SPIs master/slave

 2 channel HSUARTs, up to 115200 baud rate

 2 channel I2C masters

 4 channel PWM generator

 10-bit ADC: 2ch input

 MAC

 Basic features: S1G Beacon, NDP Control frame, TIM compression, unified scaling factor for max idle period/listen interval/WNM-sleep interval, STA Type, S1G baseline functions (DCF, HCF, multi-rate support, A-MPDU), and S1G BSS operation

 Network efficiency enhancements: NDP PS-Poll/PS-Poll Ack/Probe Resp., Raw avoidance, TSBTT, and differentiated EDCA parameter

 Power saving: Non-TIM operation, dynamic AID assignment and TWT

 BSS scalability (up to 8192 STAs): Multicast AID, and authentication control

 Low-cost STA/AP: EL operation, flow control

 Supports transmission of Standby Radio frame

 PHY

 Full IEEE 802.11ah compatibility with enhanced performance

 Single-stream up to 15Mbps data rate

 Support 1/2/4 MHz channel with optional SGI

 Support S1G_1M, Short/Long format

 Modulation: OFDM with BPSK, QPSK, 16QAM, 64QAM

 Memory

 32KB Boot ROM

 1088KB system SRAM

 SRAM0: 512KB

 SRAM1: 320KB

 SRAM2: 192KB

 SRAM3: 16KB

 SRAM4: 48KB (Retention)

 192KB Key memory for security

 This memory could be used as additional 192KB SRAM2 in non-key memory & boot mode

 16KB cache for XIP

 This memory could be used as additional 16KB SRAM3 in non-cache & boot mode

 On-board 4Mbyte serial flash for XIP

 Antenna

 ANT pin for external antenna

 Regulatory

 FCC

 IC

 CE

 Package

 Dimension: 13.5 mm x 16 mm x 2.1 mm

Datasheet:BDE-HWF7394PN_Datasheet_V0.1.pdf