The WHZ4178 is a full-featured Wi-Fi 802.11b/g/n module that includes support for high linear output power and IEEE 802.11i security. WHZ4178 is an embedded IEEE 802.11bgn WiFi SMD module and need crystal, voltage regulator and antenna connector. Module supports client and SoftAP mode. Module supports SPI & SDIO interface and has support for no OS, RTOS or Linux based platforms, so you can use the module across your multiple product lines providing you a benefit of lower product cost, inventory cost and learning cost.

WHZ4178 is fully integrated 56 pin, small size. A small form-factor of 9mm x 11mm x 1.3mm reduces board space and low memory footprint WLAN software for no OS, RTOS & embedded linux provides a wireless (WLAN) connectivity to micro-controller based products. The module is available in small to very large quantities. Module supports -40 to 85C.

The module is a complete stand-alone device with a small footprint which makes WiFi technology easy to embed into new or existing designs. The module provides an SPI/SDIO interface to communicate with a variety of host devices. The pre-tested module eliminates the need to create custom WLAN designs, resulting in greatly reduced development risk, costs and time-to-market.

Configuration with WLAN driver and TCP/IP stack running on your host micro-controller
For fast integration and product development reference working sample projects for multiple CPU families and tool chains available with off the shelf LwIP TCPIP stack
  • Host Interface
  • SPI interface to microcontroller MISO, MOSI, CLOCK, CHIP SELECT, RESET, INTERRUPT
  • SDIO interface to microcontroller DATA0, DATA1, DATA2, DATA3, CMD, CLOCK
  • Operating temperature -40oC to 85oC
  • Minimal BOM needs crystal, voltage regulator, antenna and few de-coupler capacitors
  • Smart choice of antenna allows creating internal or external antenna based products
  • Option of SMD chip antenna or flex cable antenna for internal antenna product configuration
  • External omni-directional antenna for external antenna product configuration
  • Reference schematics and designs available
  • Fully integrated small form factor
  • IEEE 802.11b/g/n compliant
  • Support SPI & SDIO interface
  • Support for IEEE802.11i advanced security enhancements
  • Support for IEEE802.11e QoS
  • Small footprint: 9x11x1.3 mm
  • Support for Access Point tethering functionality (Soft AP)
  • EEPROM and Full-RF front-end integrated for WiFi
  • Excellent GSM/GPRS/DCS/PCS/WCDMA/GPS radio coexistence
  • Support for drivers for Linux, RTOS and OS-less system
  • RoHS compliant
  • WLAN plug-in modules for non-wireless systems
  • Industrial control and networking
  • Home / building automation
  • Cable replacement
  • Smartphone / PDA / PDA phone / WiFi phone / DSC/ DVC with WiFi connectivity.
  • Printer Server / Multifunctional peripheral with WLAN connectivity
  • WLAN Standard - IEEE 802.11b/g/n Compliant
  • Host Interface - SPI & SDIO
  • Supply Voltage - 3.3V & 1.8V
  • Frequency Band Channel - 1 to 13
  • Modulation - 64QAM (MCS0-7, 400/800ns 72.2, 65, 58.5, 57.8, 52, 43.3, 39, 28.9, 26, 21.7, 19.5, 14.4, 13, 7.2, 6.5Mbps), 64QAM (54, 48Mbps), 16QAM (36, 24Mbps), QPSK (18, 12Mbps), BPSK (9, 6Mbps); CCK (11, 5.5 Mbps), DQPSK (2 Mbps), DBPSK (1Mbps).STBC reception for MCS0-7
  • Mode - Ad Hoc, Infrastructure, AP
  • Minimum Input Level Receiver Sensitivity - -87 dBm @ 11Mbps -73 dBm @ 54Mbps -69 dBm @ MCS7
  • Transmit output power - +17 dBm for 802.11b +15 dBm for 802.11g +14.5 dBm for 802.11n
  • Encryption - Hardware support for WEP40/64, WEP104/128, AES and TKIP
  • Range - Up to 100 meters in free space
  • Antenna - Choice of Internal SMD or Flex Antenna OR External Antenna
  • Software driver SDK Support
    • NOOS (NO operating system)
    • RTOS (Real-time operating system)
    • Embedded Linux
  • Software driver with advance security and roaming support
  • Small footprint driver SDK
  • Smart and Simple API interface reduces learning and integration effort
  • Standard Linux network infrastructure
For Linux SDK requirements of SDIO interface, we work together with you to provide a ported SDK for your platform-specific needs. Contact us for discussion on your requirements and a custom quote.
  • TCPIP UDP multiple sockets and client-server
  • DHCP client
  • DHCP server**
  • DNS client
  • HTTP server
  • ARP
  • Sample UART application to demonstrate functionality, use of API's and evaluate functionality on multiple platforms

     **SoftAP Specs
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11040 Bollinger Canyon Road Suite E- 206, San Ramon CA, 94582, USA
M +1-(408)-715-7654