The SKW22 based modules provide cost effective, low power, and flexible platform to add Wi-Fi® connectivity. for embedded devices for a variety of applications, such as wireless sensors and thermostats. It com- bines ARM7-based

　　processors with an RF transceiver, 802.11 MAC, security, & PHY functions, FLASH and SRAM, onboard and off module certified antenna options, and various RF front end options for end customer range needs in order to provide a WiFi and regulatory certified IEEE 802.11 radio with concur- rent application processing services for variety of applications, while leverage existing 802.11 wire- less network infrastructures.

　　Compliant with IEEE 802.11and regulatory domains:

　　• DSSS modulation for data rate of 1 Mb/s and 2 Mb/s; CCK modulation rates of 5.5 and 11Mb/s.

　　• Compatible with IEEE 802.11b.

　　• Supports short preamble and short slot times.

　　• WiFi Certified Solution

　　o Supports 802.11i security

　　° WPA™ - Enterprise, Personal

　　° WPA2™ - Enterprise, Personal

　　° Vendor EAP Type(s)

　　• EAP-TTLS/MSCHAPv2, PEAPv0/EAP-MSCHAPv2, PEAPv1/EAPGTC,EAP-FAST, EAP-TLS

　　• High-throughput hardware AES and RC4 encryption/decryption engines.

　　• RoHS and CE compliant

　　• FCC/IC Certified

　　• Fully compliant with EU & meets the R&TTE Directive for Radio Spectrum

　　• Japan Radio Type Approval (i.e. TELEC) pre-scan compliant

　　► Dual ARM7 Processor Platform:

　　• 1st ARM7 processor (WLAN CPU) for WLAN software

　　• 2nd ARM7 (APP CPU) for networking software

　　• Based on Advanced Microprocessor Bus Architecture (AMBA) system:

　　o AMBA High-Speed Bus (AHB).

　　o AMBA Peripheral Bus (APB).

　　• On-chip WLAN boot code located in dedicated boot ROM.

　　► Interfaces:

　　• One general-purpose slave SPI interfaces for external sen- sors, memory, or external CPU

　　interface; one interface may be configured as a high-speed Slave-only.

　　• UART interfaces.

　　• Up to 16 configure able general purpose I/Os.

　　• Single 3.3V supply option

　　o I/O supply voltage 1.8 ~ 3.3V option

　　• One PWM output

　　• Two 10-bit ADC channels, aggregate sample rate 32 kS/s.

　　• Two alarm inputs to asynchronously awaken the chip.

　　• Support of up to two control outputs for power supply and sensors.

　　► Embedded RTC (Real Time Clock) can run directly from battery.

　　► Power supply monitoring capability.

　　► Low-power mode operation.

　　► Sleep, Deep Sleep, and Standby

　　► 27(L) x 19.8(W) x 2.8(H) mm small dimension